THE COLD CHAIN Phyto Markets and Role Players

Keith Roxburgh

Who plays a role in the cold chain ?

NDA

PPECB

Producer

Cold Room

Shipping line

Transporter

Name of presentation

Success can be achieved!

Collective co-operation between all parties

Acceptance by each of the role players of their responsibilities

Fulfilling their responsibilities

NDA and PPECB

NDA

Phyto sanitary protocol based on inter-governmental discussions and

agreements or import permits

PPECB

Define technical protocol and monitor and audit it on behalf of NDA

Producer

Packaging

Cartons

Securing sheets

Pallets

What effect has packaging on cooling ?

Cold room – horizontal cooling

Container – vertical cooling

Deliver fruit at the correct time

Cold Room

Cool the product properly

Protocol

How long to cool ?

Uniform temperature within each pallet

Each pallet to be the same temperature

To meet the protocol

Cooling the whole pallet

Trial at Groot Gariep – cooling rates

1

2

3 4

5

6

7

8

Air direction

1

2

3 4

5

6

7

8

Air direction

Points 1 2 3 4 – probes placed in outer most berries

5 – tradition thermocouple

6 – stem temperature

7- cold air entering the stack

8 – warmer air leaving the stack

Cooling curves

Trial TwoColdest position in pallet stack4.5 Kg boxes - Perforated bags

Tunnel Seven - Top rack Centre pallet

-6

-4

-2

0

2

4

6

8

10

12

14

16

18

20

22

24

0 5 10 15 20 25 30 35

Time (Hours)

Tem

per

atu

re (

Deg

C)

B Corner C Corner T Corner T Centre Stem Air in Air out Commercial probe

Shipping line

Supply correct container with correct equipment

Probes (Probe failure)

Control temperature as per confirmed booking

Ensure cold treatment protocol is met

Deliver pallets to destination

Transporter

Move the container as quickly as possible between load point and

container terminal

Questions

?