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Transcript of Quality of White Salted Noodles Prepared from Partial Substitution of Wheat Flour by Jackfruit Seed...
Quality of White Salted Noodles
Prepared from Partial Substitution of
Wheat Flour by Jackfruit Seed Flour
Advisor: Prof. Athapol Noomhorm
FEBT_SERD_AIT May 2010
Khemawan Sukondhasingh ID 107714
Contents Introduction
Materials & Methods Results & Discussion
Recommendations
Objectives
Conclusions
Contents Introduction
Materials & Methods Results & Discussion
Recommendations
Objectives
Conclusions
INTRODUCTION
Wheat noodles
Xanthan gum
Partial substitution of wheat flour Jackfruit seed flour
INTRODUCTION
Wheat noodles
Xanthan gum
Partial substitution of wheat flour Jackfruit seed flour
INTRODUCTIONWheat noodles
high consumption: about 30 to 40% of wheat flour consumption in SE Asia
main ingredients: 1. wheat flour 2. water 3. salt
three main types: 1. white salted noodles (WSN)2. yellow alkaline noodles3. instant noodles
INTRODUCTION
Wheat noodles
Xanthan gum
Partial substitution of wheat flour Jackfruit seed flour
INTRODUCTIONPartial substitution of wheat flour wheat flours are imported: use of alternative flour or starch sources
many previous researchers have been investigated the partial replacements of wheat flour by other flour and starch sources for wheat noodle preparation:type of wheat
noodles%
replacementsubstitute
flour/starch reference
white salted noodles
20% - potato starch- sweet potato starch
Chen et al. (2003)
Chinese wheat noodles
30% - sweet cassava starch
Charles et al. (2007)
Asian wheat noodles
10, 20, 30% - coconut flour Gunathilake & Abeurathne (2007)
INTRODUCTION
Wheat noodles
Xanthan gum
Partial substitution of wheat flour Jackfruit seed flour
INTRODUCTIONJackfruit seed flour
*Department of Agriculture Extension
jackfruit seed: by product (waste) of processed jackfruit’s pulps for
exported products 10-15% of total fruit weight (*Thailand: 78,132 tons/yr. in 1997)
high carbohydrate, protein, and dietary fiber contents short shelf-life for fresh seeds
= waste
INTRODUCTIONJackfruit seed flour
has low pasting viscosities and lacks of gluten protein
previous researchers have been used jackfruit seed starch/flour as a partial substitute of wheat flour in foods:
type of food % replacement reference
cookie 5, 10, 15% Ponkeaw & Houyhouan (2003)
white bread 5% Tulyathan et al. (2002)
whole wheat bread 10% Aziz (2005)
cake 16% Amin (2009)
INTRODUCTION
Wheat noodles
Xanthan gum
Partial substitution of wheat flour Jackfruit seed flour
INTRODUCTIONXanthan gum
viscous microbial polysaccharide
acts as gluten substitute: in baked product (Gallagher et al., 2004;
Scholten and Mensing, 2010) in pasta and noodles (Yalcin and Basman, 2008; Lui, 2009)
could improve the masticated sensory and increase the toughness of noodles
biocompatible
biodegradable
Contents Introduction
Materials & Methods Results & Discussion
Recommendations
Objectives
Conclusions
OBJECTIVES
OBJECTIVESMain objectives
To use the discarded material of jackfruit seeds as a flour ingredient substitute (value-added product) for wheat noodle making through flour preparation
OBJECTIVESMain objectives
To use the discarded material of jackfruit seeds as a flour ingredient substitute (value-added product) for wheat noodle making through flour preparation
To improve noodle qualities by addition of xanthan gum
XAN
Contents Introduction
Materials & Methods Results & Discussion
Recommendations
Objectives
Conclusions
MATERIALS &
METHODS
MATERIALS & METHODSMaterials
Wheat flour
Jackfruit seeds
Salt
Xanthan gum
Materials
Wheat flour: “KITE” all-purpose wheat flour (United Flour Mill Public Co., Ltd., Samutprakarn, Thailand)
Jackfruit seeds
Salt
Xanthan gum
MATERIALS & METHODS
Materials
Wheat flour: “KITE” all-purpose wheat flour (United Flour Mill Public Co., Ltd., Samutprakarn, Thailand)
Jackfruit seeds: variety of “Thong Pra-Sirt”
Salt
Xanthan gum
MATERIALS & METHODS
Materials
Wheat flour: “KITE” all-purpose wheat flour (United Flour Mill Public Co., Ltd., Samutprakarn, Thailand)
Jackfruit seeds: variety of “Thong Pra-Sirt”
Salt: “Prung Thip” iodized refined table salt
Xanthan gum
MATERIALS & METHODS
Materials
Wheat flour: “KITE” all-purpose wheat flour (United Flour Mill Public Co., Ltd., Samutprakarn, Thailand)
Jackfruit seeds: variety of “Thong Pra-Sirt”
Salt: “Prung Thip” iodized refined table salt
Xanthan gum: food grade (Ingredient Center Co., Ltd., Bangkok, Thailand)
MATERIALS & METHODS
Pre-laboratory
Determination of the maximum percentage of substitution of wheat flour by jackfruit seed flour for white salted noodle making 15% substitution
MATERIALS & METHODS
Preparation of jackfruit seed flour
Jackfruit seeds
Assessment of flour properties
Proximate analysis
Jackfruit seed flour Amylose content
Jackfruit seed flour Particle size distribution
Jackfruit seed flour Color
Jackfruit seed flour Swelling power
Jackfruit seed flour Solubility
Jackfruit seed flour Water absorption capacity
Pasting properties
Assessment of composite flour properties
Swelling power
Jackfruit seed flour Solubility
Jackfruit seed flour Water absorption capacity
Jackfruit seed flour Pasting properties
Making of white salted noodles
Control I (100% WF)
Jackfruit seed flour Control II (85% WF+15% JF)
Jackfruit seed flour 85% WF + 15% JF+0.1% XAN
Jackfruit seed flour
85% WF + 15% JF+0.3% XAN
85% WF + 15% JF+0.2% XAN
Assessment of noodle qualities
Pasting properties
Jackfruit seed flour Proximate analysis
Jackfruit seed flour Cooking qualities
Jackfruit seed flour Texture of cooked noodles
Jackfruit seed flour Color of cooked noodles
Jackfruit seed flour Sensory evaluation
All-purpose wheat flour (WF) Jackfruit seed flour (JF) Composite flour (85%WF+15%JF)
Fig. 1 Flow chart of overall experimental design
Methods
1. Preparation of jackfruit seed flour
1.) Jackfruit
2.) Jackfruit seeds with arils & spermoderms
3.) Jackfruit endosperms
4.) Jackfruit seed flour(10% moisture content)
MATERIALS & METHODS
Methods
1. Preparation of jackfruit seed flour
1.) Jackfruit
2.) Jackfruit seeds with arils & spermoderms
3.) Jackfruit endosperms
4.) Jackfruit seed flour(10% moisture content)
30% yield by weight of fresh seed
MATERIALS & METHODS
Methods
2. Determination of physicochemical and functional properties of flour
2.1 Flour particle size distribution2.2 Proximate analysis2.3 Amylose content2.4 Swelling power and solubility2.5 Water absorption capacity2.6 Pasting properties: RVA2.7 Color: L*, a*, b*
MATERIALS & METHODS
Methods
3. White salted noodle (WSN) making
Ingredients:
Flour: Control I = 100% of wheat flour Control II = 15% of jackfruit seed flour
Water: 40% based on flour weight
Salt: 1% based on flour weight
Xanthan gum: 0.1, 0.2, 0.3% based on flour weight
MATERIALS & METHODS
5 White Salted Noodle Treatments
Control I(100% WF)
Control II (15% JF)
15% JF +
0.1% XAN
15% JF +
0.2% XAN
15% JF +
0.3% XAN
MATERIALS & METHODS
Basic steps of WSN making
Dough
cutting
DryingFresh
noodles
Boiling
Cooked
noodles
1% NaCl
Dough
mixing
Dough
resting
Water Salt Flour
Dough
sheeting
5 raw fresh white salted noodle treatments
Control I Control II
0.1% XAN 0.2% XAN 0.3% XAN
Methods
4. Evaluation of WSN quality4.1 Proximate analysis4.2 Cooking quality of dried noodles4.3 Color of cooked noodles: L*, a*, b*4.4 Texture of cooked noodles: TPA4.5 Sensory evaluation: affective sensory method
with acceptance test by nine-point Hedonic scale
MATERIALS & METHODS
Contents Introduction
Materials & Methods Results & Discussion
Recommendations
Objectives
Conclusions
RESULTS &
DISCUSSION
RESULTS & DISCUSSION1. Determination of physicochemical and functional
properties of flour1.1 Flour particle size distribution
4 - 5 μm
8 - 9 μm
0 5 10 15 20 25 30 35 400.0
5.0
10.0
15.0
20.0
25.0
30.0
WF JF
Particle Size (μm)
% S
ize
Dis
trib
uti
on
Figure 2 Particle size distributions of wheat flour (WF) and jackfruit seed flour (JF)
1.2 Chemical analysis
Chemical composition (% db) Wheat flour Jackfruit seed flour
Moisture 11.41b 9.93a
Crude protein 12.90b 12.51a
Crude lipid 1.19b 0.95a
Crude fiber 0.21a 2.87b
Ash 0.64a 3.63b
Available carbohydrate 73.65b 70.11a
Amylose 25.28a 23.72a
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 1 Chemical compositions of wheat flour and jackfruit seed flour
RESULTS & DISCUSSION
Fig. 3 Comparison in chemical compositions between wheat flour and jackfruit seed flour
Wheat flour
Jackfruit seed flour
RESULTS & DISCUSSION1.2 Chemical analysis
Fig. 3 Comparison in chemical compositions between wheat flour and jackfruit seed flour
Wheat flour
Jackfruit seed flour
RESULTS & DISCUSSION1.2 Chemical analysis
9.93%11.41%
Fig. 3 Comparison in chemical compositions between wheat flour and jackfruit seed flour
Wheat flour
Jackfruit seed flour
RESULTS & DISCUSSION1.2 Chemical analysis
9.93%
12.51%0.95%
11.41%
12.90%
1.19%
Fig. 3 Comparison in chemical compositions between wheat flour and jackfruit seed flour
Wheat flour
Jackfruit seed flour
RESULTS & DISCUSSION1.2 Chemical analysis
9.93%
12.51%
3.63%
0.95%
11.41%
12.90%
0.64%
1.19%
0.21%2.87%
Fig. 3 Comparison in chemical compositions between wheat flour and jackfruit seed flour
Wheat flour
Jackfruit seed flour
RESULTS & DISCUSSION1.2 Chemical analysis
9.93%
12.51%
3.63%
0.95%
11.41%
12.90%
0.64%
1.19%
0.21%2.87%
1.2 Chemical analysis
Chemical composition (% db) Wheat flour Jackfruit seed flour
Moisture 11.41b 9.93a
Crude protein 12.90b 12.51a
Crude lipid 1.19b 0.95a
Crude fiber 0.21a 2.87b
Ash 0.64a 3.63b
Available carbohydrate 73.65b 70.11a
Amylose 25.28a 23.72a
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 1 Chemical compositions of wheat flour and jackfruit seed flour
RESULTS & DISCUSSION
1.2 Chemical analysis
Chemical composition (% db) Wheat flour Jackfruit seed flour
Moisture 11.41b 9.93a
Crude protein 12.90b 12.51a
Crude lipid 1.19b 0.95a
Crude fiber 0.21a 2.87b
Ash 0.64a 3.63b
Available carbohydrate 73.65b 70.11a
Amylose 25.28a 23.72a
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 1 Chemical compositions of wheat flour and jackfruit seed flour
RESULTS & DISCUSSION
Optimal flour amylose content range
for noodles: 21 - 25%
RESULTS & DISCUSSION1.3 Physicochemical properties
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 2 Values of swelling power, solubility, and water absorption capacity of wheat flour and jackfruit seed flour
Physicochemical properties Wheat flour Jackfruit seed flour
Swelling power (g H2O/g flour) 7.997b 6.616a
Solubility (%) 5.091a 11.934b
Water absorption capacity (g H2O/g flour)
2.281a 4.019b
RESULTS & DISCUSSION1.3 Physicochemical properties
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 2 Values of swelling power, solubility, and water absorption capacity of wheat flour and jackfruit seed flour
Physicochemical properties Wheat flour Jackfruit seed flour
Swelling power (g H2O/g flour) 7.997b 6.616a
Solubility (%) 5.091a 11.934b
Water absorption capacity (g H2O/g flour)
2.281a 4.019b
RESULTS & DISCUSSION1.3 Physicochemical properties
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 2 Values of swelling power, solubility, and water absorption capacity of wheat flour and jackfruit seed flour
Physicochemical properties Wheat flour Jackfruit seed flour
Swelling power (g H2O/g flour) 7.997b 6.616a
Solubility (%) 5.091a 11.934b
Water absorption capacity (g H2O/g flour)
2.281a 4.019b
RESULTS & DISCUSSION1.4 Pasting properties
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 3 Pasting parameters of wheat flour and jackfruit seed flour
Pasting parameters Wheat flour Jackfruit seed flour
Pasting temperature (˚C) 85.80a 88.70b
Peak time (min) 5.98b 5.20a
Peak viscosity (RVU) 176.50b 137.07a
Hot paste viscosity (RVU) 112.19b 93.50a
Breakdown (RVU) 64.30b 43.57a
Final viscosity (RVU) 221.64b 133.39a
Setback (RVU) 109.44b 39.89a
RESULTS & DISCUSSION1.4 Pasting properties
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 3 Pasting parameters of wheat flour and jackfruit seed flour
Pasting parameters Wheat flour Jackfruit seed flour
Pasting temperature (˚C) 85.80a 88.70b
Peak time (min) 5.98b 5.20a
Peak viscosity (RVU) 176.50b 137.07a
Hot paste viscosity (RVU) 112.19b 93.50a
Breakdown (RVU) 64.30b 43.57a
Final viscosity (RVU) 221.64b 133.39a
Setback (RVU) 109.44b 39.89a
RESULTS & DISCUSSION1.4 Pasting properties
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 3 Pasting parameters of wheat flour and jackfruit seed flour
Pasting parameters Wheat flour Jackfruit seed flour
Pasting temperature (˚C) 85.80a 88.70b
Peak time (min) 5.98b 5.20a
Peak viscosity (RVU) 176.50b 137.07a
Hot paste viscosity (RVU) 112.19b 93.50a
Breakdown (RVU) 64.30b 43.57a
Final viscosity (RVU) 221.64b 133.39a
Setback (RVU) 109.44b 39.89a
Fig. 4 Comparison of RVA pasting curve between wheat and jackfruit seed flours
Final viscosity
Setback
RESULTS & DISCUSSION
Hot paste viscosity
Breakdown
Peak viscosity
RESULTS & DISCUSSION1.5 Color
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 4 Tristimulus color parameters of wheat flour and jackfruit seed flour
Tristimulus color parameters
Wheat flour Jackfruit seed flour
L* 93.40b 91.65a
a* +0.27b -0.46a
b* +7.69a +11.43b
RESULTS & DISCUSSION1.5 Color
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 4 Tristimulus color parameters of wheat flour and jackfruit seed flour
Tristimulus color parameters
Wheat flour Jackfruit seed flour
L* 93.40b 91.65a
a* +0.27b -0.46a
b* +7.69a +11.43b
morebrightness
lessbrightness
RESULTS & DISCUSSION1.5 Color
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 4 Tristimulus color parameters of wheat flour and jackfruit seed flour
Tristimulus color parameters
Wheat flour Jackfruit seed flour
L* 93.40b 91.65a
a* +0.27b -0.46a
b* +7.69a +11.43b
lessyellowness
moreyellowness
RESULTS & DISCUSSION2. Determination of physicochemical properties of the
composite flour (85%WF+15%JF) for WSN making
Table 5 Values of swelling power, solubility, and water absorption capacity of wheat flour, jackfruit seed flour, and the composite flour
Physicochemical properties Wheat flour Jackfruit seed
flour
Composite flour (85% WF+15% JF)
Swelling power (g H2O/g flour)
7.996c 6.616a 7.462b
Solubility (%) 5.091a 11.934c 6.049b
Water absorption capacity (g H2O/g flour)
2.281a 4.019c 2.535b
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
RESULTS & DISCUSSION2. Determination of physicochemical properties of the
composite flour (85%WF+15%JF) for WSN making
Table 5 Values of swelling power, solubility, and water absorption capacity of wheat flour, jackfruit seed flour, and the composite flour
Physicochemical properties Wheat flour Jackfruit seed
flour
Composite flour (85% WF+15% JF)
Swelling power (g H2O/g flour)
7.996c 6.616a 7.462b
Solubility (%) 5.091a 11.934c 6.049b
Water absorption capacity (g H2O/g flour)
2.281a 4.019c 2.535b
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
RESULTS & DISCUSSION2. Determination of physicochemical properties of the
composite flour (85%WF+15%JF) for WSN making
Table 5 Values of swelling power, solubility, and water absorption capacity of wheat flour, jackfruit seed flour, and the composite flour
Physicochemical properties Wheat flour Jackfruit seed
flour
Composite flour (85% WF+15% JF)
Swelling power (g H2O/g flour)
7.996c 6.616a 7.462b
Solubility (%) 5.091a 11.934c 6.049b
Water absorption capacity (g H2O/g flour)
2.281a 4.019c 2.535b
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
RESULTS & DISCUSSION3. Proximate analysis of WSN
Table 6 Chemical compositions from proximate analysis of control I and control II white salted noodle (WSN) treatments
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Chemical composition (%)
WSN prepared from 100% WF
(control I)
WSN prepared from 85% WF and 15% JF
(control II)
Moisture 29.40a 28.74a
Crude protein 8.56b 8.25a
Crude lipid 1.23b 1.13a
Crude fiber 0.03a 0.23b
Ash 1.07a 1.36b
Available carbohydrate 59.71a 60.29a
RESULTS & DISCUSSION3. Proximate analysis of WSN
Fig. 5 Comparison in chemical compositions of noodles between control I (100% WF) and control II (85% WF and 15% JF) treatments
Control I Control II
RESULTS & DISCUSSION4. Effect of xanthan gum on pasting properties of the
composite flour (85%WF+15%JF) for WSN preparation
Fig. 6 RVA pasting curve of the composite flour (85% WF and 15% JF)
RESULTS & DISCUSSION
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 7 Effect of xanthan gum (XAN) on pasting parameters of composite flour in comparison with wheat flour
Pasting parameters
WF (control I)
15% JF (control II)
15% JF+
0.1% XAN
15% JF +
0.2% XAN
15% JF +
0.3% XAN
Pasting temp (˚C) 85.80a 86.87ab 86.42ab 87.02ab 87.32b
Peak time (min) 5.98d 5.78a 5.84abc 5.82ab 5.91bcd
PV (RVU) 176.50e 149.03a 153.39b 164.58c 172.25d
HPV (RVU) 112.19e 93.39a 95.03b 104.50c 106.97d
BD (RVU) 64.31d 55.64a 58.36b 60.08c 65.28d
FV (RVU) 221.64e 187.31a 191.06b 198.33c 200.69d
SB (RVU) 109.44d 93.92abc 96.03bc 93.83ab 95.06abc
Fig. 7 Comparison of RVA pasting curve of the flour substrates among all 5 treatments
RESULTS & DISCUSSION
Peak viscosity
Final viscosity
Hot paste viscosity
SetbackBreakdown
Fig. 7 Comparison of RVA pasting curve of the flour substrates among all 5 treatments
RESULTS & DISCUSSION
Peak viscosity
Final viscosity
Hot paste viscosity
SetbackBreakdown
Values shown on the bar are means of three replications while the different letters within the same graph detect the significantly different values at p ≤ 0.05 by LSD test.
Fig.8 Effect of xanthan gum (XAN) on final viscosity of the composite flour in comparison with wheat flour
Fig.9 Effect of xanthan gum (XAN) on setback of the composite flour in comparison with wheat flour
RESULTS & DISCUSSION
5. Effect of xanthan gum on white salted noodle quality prepared from 15 percent substitution of wheat flour by jackfruit seed flour
Textureof
cooked noodles
Color of
cooked noodles
Cooking qualitie
s
Assessment of noodle qualities
Sensory evaluatio
n
RESULTS & DISCUSSION
Cooking qualities
WF (control I)
15% JF (control II)
15% JF+
0.1% XAN
15% JF +
0.2% XAN
15% JF +
0.3% XAN
Cooking time (sec) 50b 40a 40a 40a 40a
Cooking weight (%) 61.22a 71.95b 70.25b 86.49c 92.06d
Cooking loss (%) 1.78a 2.10b 2.49c 3.03d 2.99d
Table 8 Effect of xanthan gum (XAN) on cooking qualities of noodles prepared from 15 percent substitution of wheat flour by jackfruit seed flour (JF) compared with those prepared from individual wheat flour (WF)
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
5.1 Cooking qualities
RESULTS & DISCUSSION
Values shown on the bar are means of three replications while the different letters within the same graph detect the significantly different values at p ≤ 0.05 by LSD test.
Fig.11 Comparison in cooking loss (%) of noodles among five treatments
Fig.10 Comparison in cooking weight (%) of noodles among five treatments
RESULTS & DISCUSSION
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
5.2 Color of cooked noodles
Table 9 Effect of xanthan gum (XAN) on color of cooked noodles prepared from 15 percent substitution of wheat flour by jackfruit seed flour (JF) compared with those prepared from individual wheat flour (WF)
Color parameter
WF (control I)
15% JF (control II)
15% JF+
0.1% XAN
15% JF +
0.2% XAN
15% JF +
0.3% XAN
L* 72.75d 67.97a 69.62b 71.05c 71.31c
a* 0.43e -0.36a -0.32b -0.06c 0.09d
b* 10.60a 10.55a 10.98b 12.30c 12.96d
RESULTS & DISCUSSION
Values shown on the bar are means of three replications while the different letters within the same graph detect the significantly different values at p ≤ 0.05 by LSD test.
Fig.12 Comparison of L* of cooked noodles among five treatments
light
ness
RESULTS & DISCUSSION
Values shown on the bar are means of three replications while the different letters within the same graph detect the significantly different values at p ≤ 0.05 by LSD test.
Fig.14 Comparison of b* of cooked noodles among five treatments
RESULTS & DISCUSSION
5.3 Texture of cooked noodles
Fig. 15 Example of a force-time curve from TPA of cooked noodles
RESULTS & DISCUSSION
L1 L2
A1 A2
A3
A5A4
hardness
adhesiveness = A3
cohesiveness = A2/A1
springiness = L2/L1
resilience = A5/A4Forc
e (
N)
Time (sec)
5.3 Texture of cooked noodles
I. Hardness = 1st peak
II. Adhesiveness = A3
III. Cohesiveness = A2/A1
IV. Springiness = L2/L1
V. Chewiness = hardness x cohesiveness x springiness
VI. Resilience = A5/A4
RESULTS & DISCUSSION
5.3 Texture of cooked noodles
I. Hardness
II. Adhesiveness
III. Cohesiveness
IV. Springiness
V. Chewiness
VI. Resilience
RESULTS & DISCUSSION
5.3 Texture of cooked noodles
I. Hardness = firmness
II. Adhesiveness
III. Cohesiveness
IV. Springiness
V. Chewiness
VI. Resilience
RESULTS & DISCUSSION
Values shown on the bar are means of three replications while the different letters within the same graph detect the significantly different values at p ≤ 0.05 by LSD test.
Fig. 16 Comparison of hardness (N) of cooked noodles among five treatments
RESULTS & DISCUSSION
Values shown on the bar are means of three replications while the different letters within the same graph detect the significantly different values at p ≤ 0.05 by LSD test.
Fig. 16 Comparison of hardness (N) of cooked noodles among five treatments
improvefirmness
RESULTS & DISCUSSION
5.3 Texture of cooked noodles
I. Hardness
II. Adhesiveness
III. Cohesiveness
IV. Springiness
V. Chewiness
VI. Resilience
RESULTS & DISCUSSION
RESULTS & DISCUSSION
Values shown on the bar are means of three replications while the different letters within the same graph detect the significantly different values at p ≤ 0.05 by LSD test.
Fig. 17 Comparison of cohesiveness of cooked noodles among five treatments
cohesiveness slipperiness
Values shown on the bar are means of three replications while the different letters within the same graph detect the significantly different values at p ≤ 0.05 by LSD test.
Fig. 17 Comparison of cohesiveness of cooked noodles among five treatments
RESULTS & DISCUSSION
Values shown on the bar are means of three replications while the different letters within the same graph detect the significantly different values at p ≤ 0.05 by LSD test.
Fig. 17 Comparison of cohesiveness of cooked noodles among five treatments
stickiness =
slipperiness
RESULTS & DISCUSSION
Values shown on the bar are means of three replications while the different letters within the same graph detect the significantly different values at p ≤ 0.05 by LSD test.
Fig. 17 Comparison of cohesiveness of cooked noodles among five treatments
slipperiness slipperiness
RESULTS & DISCUSSION
RESULTS & DISCUSSION5.4 Sensory evaluation: affective method
RESULTS & DISCUSSION
Values shown on the bar are means of three replications while the different letters within the same graph detect the significantly different values at p ≤ 0.05 by LSD test.
Fig.18 Comparison of scores in overall acceptance using nine-point Hedonic scale among five treatments
disl
ike
like
Contents Introduction
Materials & Methods Results & Discussion
Recommendations
Objectives
Conclusions
CONCLUSIONS
CONCLUSIONSFlour extracted from bio-waste of jackfruit seeds can be used as a partial (15%) flour ingredient substitute for white salted noodles
CONCLUSIONSNoodles prepared from the composite flour (85%WF and 15% JF) with 0.3% of additive xanthan gum showed the best result in view of instrumental assessments, in comparison with those prepared from 100% wheat flour as commercial formula (control I)
Noodles with 0.2% of xanthan gum enrichment obtained the highest acceptance from sensory evaluation as control I treatment.
0.2% XAN
85% WF
15% JF
+ + =
WSN
Contents Introduction
Materials & Methods Results & Discussion
Recommendations
Objectives
Conclusions
RECOMMENDATIONS
RECOMMENDATIONSRecommendations for further study
1. Reduce ash content of jackfruit seed flour during flour preparation
2. Use high fiber of jackfruit seed flour in fortified foods
3. Investigate the effect of partial substitute of wheat flour by jackfruit seed flour in yellow alkaline noodle and instant noodle preparation
4. Improve the quality of white salted noodles prepared from a blend of wheat flour and jackfruit seed flour by using other gluten substitutes
5. Partial substitute wheat flour by jackfruit seed flour in other food product preparation
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RESULTS & DISCUSSION1.2 Chemical analysis
Chemical composition (% db) Wheat flour Jackfruit seed flour
Moisture 11.41b ± 0.09 9.93a ± 0.04
Crude protein 12.90b ± 0.04 12.51a ± 0.11
Crude lipid 1.19b ± 0.03 0.95a ± 0.03
Crude fiber 0.21a ± 0.01 2.87b ± 0.05
Ash 0.64a ± 0.01 3.63b ± 0.03
Available carbohydrate 73.65b ± 0.16 70.11a ± 0.19
Amylose 25.28a ± 0.68 23.72a ± 0.72
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 1 Chemical compositions of wheat flour and jackfruit seed flour
RESULTS & DISCUSSION1.3 Physicochemical properties
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 2 Values of swelling power, solubility, and water absorption capacity of wheat flour and jackfruit seed flour
Physicochemical properties Wheat flour Jackfruit seed flour
Swelling power (g H2O/g flour) 7.997b ± 0.187 6.616a ± 0.098
Solubility (%) 5.091a ± 0.170 11.934b ± 0.307
Water absorption capacity (g H2O/g flour)
2.281a ± 0.013 4.019b ± 0.041
RESULTS & DISCUSSION1.4 Pasting properties
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 3 Pasting parameters of wheat flour and jackfruit seed flour
Pasting parameters Wheat flour Jackfruit seed flour
Pasting temperature (˚C) 85.80a ± 0.69 88.70b ± 0.44
Peak time (min) 5.98b ± 0.04 5.20a ± 0.07
Peak viscosity (RVU) 176.50b ± 0.14 137.07a ± 1.85
Hot paste viscosity (RVU) 112.19b ± 1.13 93.50a ± 0.80
Breakdown (RVU) 64.30b ± 0.99 43.57a ± 1.08
Final viscosity (RVU) 221.64b ± 0.79 133.39a ± 1.33
Setback (RVU) 109.44b ± 1.19 39.89a ± 0.54
RESULTS & DISCUSSION1.5 Color
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 4 Tristimulus color parameters of wheat flour and jackfruit seed flour
Tristimulus color parameters
Wheat flour Jackfruit seed flour
L* 93.40b ± 0.12 91.65a ± 0.26
a* +0.27b ± 0.04 -0.46a ± 0.08
b* +7.69a ± 0.11 +11.43b ± 0.11
RESULTS & DISCUSSION2. Determination of physicochemical properties of the
composite flour (85%WF+15%JF) for WSN making
Table 5 Values of swelling power, solubility, and water absorption capacity of wheat flour, jackfruit seed flour, and the composite flour
Physicochemical properties Wheat flour Jackfruit seed
flour
Composite flour (85% WF+15% JF)
Swelling power (g H2O/g flour)
7.996c ± 0.186 6.616a ± 0.099 7.462b ± 0.221
Solubility (%) 5.091a ± 0.170 11.934c ± 0.307 6.049b ± 0.180
Water absorption capacity (g H2O/g flour)
2.281a ± 0.013 4.019c ± 0.041 2.535b ± 0.049
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
RESULTS & DISCUSSION3. Proximate analysis of WSN
Table 6 Chemical compositions from proximate analysis of control I and control II white salted noodle (WSN) treatments
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Chemical composition (%)
WSN prepared from 100% WF
(control I)
WSN prepared from 85% WF and 15% JF
(control II)
Moisture 29.40a ± 0.14 28.74a ± 0.14
Crude protein 8.56b ± 0.09 8.25a ± 0.08
Crude lipid 1.23b ± 0.01 1.13a ± 0.02
Crude fiber 0.03a ± 0.01 0.23b ± 0.01
Ash 1.07a ± 0.02 1.36b ± 0.04
Available carbohydrate 59.71a ± 0.17 60.29a ± 0.16
RESULTS & DISCUSSION
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
Table 7 Effect of xanthan gum (XAN) on pasting parameters of composite flour in comparison with wheat flour
Pasting parameters
WF (control I)
15% JF (control II)
15% JF+
0.1% XAN
15% JF +
0.2% XAN
15% JF +
0.3% XAN
Pasting temp (˚C)
85.80a ± 0.69 86.87ab ± 0.35 86.42ab ± 0.75 87.02ab ± 0.94 87.32b ± 0.73
Peak time (min)
5.98d ± 0.04 5.78a ± 0.04 5.84abc ± 0.08 5.82ab ± 0.04 5.91bcd ± 0.04
PV (RVU) 176.50e ± 0.14 149.03a ± 0.51 153.39b ± 0.39 164.58c ± 0.88 172.25d ± 0.85
HPV (RVU) 112.19e ± 1.13 93.39a ± 0.27 95.03b ± 0.34 104.50c ± 1.28 106.97d ± 0.54
BD (RVU) 64.31d ± 0.99 55.64a ± 0.49 58.36b ± 0.48 60.08c ± 0.42 65.28d ± 1.14
FV (RVU) 221.64e ± 0.79 187.31a ± 1.30 191.06b ± 0.43 198.33c ± 0.75 200.69d ± 0.69
SB (RVU) 109.44d ± 1.19 93.92abc ± 1.34 96.03bc ± 0.27 93.83ab ± 1.88 95.06abc ± 0.67
Cooking qualities
WF (control I)
15% JF (control II)
15% JF+
0.1% XAN
15% JF +
0.2% XAN
15% JF +
0.3% XAN
Cooking time (sec)
50b ± 0.0 40a ± 0.0 40a ± 0.0 40a ± 0.0 40a ± 0.0
Cooking weight (%)
61.22a ± 1.45 71.95b ± 1.91 70.25b ± 2.02 86.49c ± 1.17 92.06d ± 1.41
Cooking loss (%)
1.78a ± 0.12 2.10b ± 0.17 2.49c ± 0.04 3.03d ± 0.07 2.99d ± 0.15
Table 8 Effect of xanthan gum (XAN) on cooking qualities of noodles prepared from 15 percent substitution of wheat flour by jackfruit seed flour (JF) compared with those prepared from individual wheat flour (WF)
Values shown in the table are means and standard deviations of three replications while the different letters within the same row detect the significantly different values at p ≤ 0.05 by LSD test.
5.1 Cooking qualities
RESULTS & DISCUSSION
Fig. 4 Comparison of RVA pasting curve between wheat and jackfruit seed flours
Peak viscosity
Final viscosity
Hot paste viscosity
SetbackBreakdown
RESULTS & DISCUSSION
Fig. 4 Comparison of RVA pasting curve between wheat and jackfruit seed flours
Peak viscosity Final
viscosity
Hot paste viscosity
Setback
Breakdown
RESULTS & DISCUSSION