Uncovering the benefits of packaged milk
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Transcript of Uncovering the benefits of packaged milk
Uncovering the Benefits of Packaged
Milk
Why we need packaged milkAccording to an FSSAI Report in February 2012
70% of the milk in India is adulterated
Why we need packaged milk– Risk of Pathogens in the open milk due to surrounding
environment and Unhygienic Grazing Conditions
– Risk of Bacteria inside and outside the udder during milking
– Improper Sanitization while milking manually or
mechanically
– Unsterile storage and transportation equipment
Loose Milk– A favorable home to microbes
• In addition to being a nutritious food for humans, milk provides a favorable environment for the growth of microorganisms.
• Yeasts, moulds and a broad spectrum of bacteria can grow in milk, particularly at temperatures above 16°C.
• Microbes can enter milk via cow, air, feedstuffs, milk handling equipment and the milker.
• Once microorganisms get into the milk their numbers increase rapidly. It is more effective to exclude micro-organisms than to try to control microbial growth once they have entered the milk. Angulo FJ, LeJeune TJ and Rajala-Schultz PJ, Unpasteurized Milk: A Continued Public Health Threat, Clin Infect Dis. (2009) 48 (1): 93-100.
Pseudomonas SpoilageBrucella PathogenicEnterobacteriaceae Pathogenic and
spoilage
StaphylococciStaphylococcus aureus PathogenicStreptococcusS. agalactiae PathogenicS. thermophilus Acid fermentationS. lactis Acid fermentationS. lactis-diacetyllatic Flavour productionS. cremoris Acid fermentationLeuconostoc lactis Acid fermentationBacillus cereus SpoilageLactobacillusL. lactis Acid productionL. bulgaricus Acid productionL. acidophilus Acid productionPropionibacterium Acid productionMycobacterium tuberculosis Pathogenic
Bacteria commonly associated with milk spoilage
Commonly used Milk Packaging Technologies In India
Milk Vending machinesBulk Vending by machines through token systems
Advantages• Can purchase small
quantity of milk • Cost-effective
Disadvantages• Hygiene and safety cannot
be ensured• Handling of milk at variant
temperatures while transportation can lead to microorganisms growth.
Milk in Glass Bottles
Advantages• Transparent and strong bottles• Inertness to chemical substances• Water and gas barrier
Disadvantages• Difficulty in transportation• Fragile and costly• Loss of nutrients ( B vitamins)
due to effect of light• Glass though 100% recyclable is
not environmentally friendly to be recycled
Milk in Plastic Packets
Advantages• Light and easy to transport
Disadvantages• Can be easily adulterated • The quality of plastic used
should be virgin polyethylene only (LDPE, LLDPE, HDPE or EVA)
• Short shelf life• Need to keep at fixed
temperature in cold chain constantly
Aseptically packaged milk – New age technology of the
White Revolution
Milk in Tetra Pak • Is Ultra Heat Treated• Is aseptically packed• Light and easy to transport• Aseptic• Preserves maximum nutrients – Vitamin C, Folic
acid and Riboflavin• Has a longer shelf life• Need not be refrigerated• 100% recyclable
And Ensures Attributes of Good Quality Milk
• Safe to drink
• Retains all nutrients
• Free from contamination & adulteration
• Escapes the practice of boiling which causes loss of nutrients
• Does not require maintenance of cold chain thus reducing the chances of spoilage
Asepsis and Heat Treatment of Milk
Asepsis and Aseptic processing
Asepsis is the state of being free from disease-causing contaminants (such as bacteria, viruses, fungi, and parasites) or, preventing contact with microorganisms.
Aseptic processing is the process by which a sterile (aseptic) product (typically food or pharmaceutical) is packaged in a sterile container in a way that maintains sterility.
Aseptic food preservation methods allow processed food to keep for long periods of time without preservatives, as long as they are not opened.
Methods of Heat treatment of Milk
Type of heat treatment
Temperature Shelf-life
Pasteurization 72-75 o C , 15-40 sec 4-7 days
UHT 135-150 o C, 4-20 sec 6 months at ambient temperature
UHT v/s Pasteurization
Parameters Pasteurization UHT
Heat treatment 63°C /30 mins or 72-75oC for 15-20 s
138°C (280°F)/2 sec
Bacterial kill Some survival Nearly “sterile”
Shelf-life 10-21 days 1 month to 6 months
Storage Refrigeration Room temperature
However…
There are some myths around Aseptically packaged milk
Source: 1- Study to evaluate the impact of heat treatment on water soluble vitamins in milkJ Pak Med Assoc Vol. 60, No. 11, November 2010
Fact The fact is Ultra heat treated milk which is aseptically packed has lesser loss of nutrients as compared to loss of nutrients due to faulty boiling practices.Conventional boiling causes decrease in water soluble vitamins: 27% loss of Thiamin (B1), 27% loss of Riboflavin (B2) 29% loss of Niacin (B3)24% loss of Vitamin B636% loss of Folic Acid
The values for vitamins B1, B2, B3, B6 and folic acid in boiled milk are significantly lower than UHT treated packaged milk samples by 25.9, 75.0, 54.5, 63.16 and 38.1% respectively.1
Myth- Aseptic packaged milk has lesser nutritive value
Fact The fact is aseptic packaged milk is the highest quality milk available today which is most suitable for children because of its intact nutritive quality and its ensured safety from contamination and adulteration.
Myth- Aseptic packaged milk is not suitable for children
So, If Technology Has a Solution Then Why Not Adopt It …
• Aseptic processing ensures that everything in the production chain is commercially sterile including the food, packaging materials, machinery and the environment in which the packaging takes place.
• It removes all micro-organisms from milk including bacterial spores.
• Ultra Heat Treatment (UHT) is given to milk and the heating period is so brief, it causes less damage to nutrients and flavour compounds.
• Aseptic packaging involves transferring the UHT-treated milk into pre-sterilized packages in a sterile environment.
• Because of the sterile packaging, there is no risk of contamination.
• Aseptic packaged milk has unparalleled hygienic quality offering intact nutrients necessary for child’s growth and development.
Choice of Every Healthcare Professional – Aseptically
packaged milk!