Cold Link Africa May/Jun 2017 | Page 34

PROJECT
INCORPORATING COLD CHAIN
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‘ Thank you berry much, South Africa,’ say global markets

Five years ago, South Africa exported only a few hundred tons of berries every year( about 200t in 2008), but production increased at such a rapid pace over the past five years that the industry now exports more than 1 000t of both blueberries and raspberries, and 50t of blackberries a year.

South Africa exports about 80 % of all berries produced and the most important markets are the UK and continental Europe. South Africa has the advantage of counter-cyclical seasonality to northern hemisphere production. Southern hemisphere berries are in demand, particularly during the northern hemisphere winter when their local supply is limited.
Power saving was a prime consideration in the redesign of the refrigeration system.
“ We are a small producer in international
terms. Our main competitors in
blueberries are South American countries
such as Chile which produces about 17
000t of blueberries a year and Argentina
which produces about 14 000t. But we can compete with these European
Young plants at various stages in growth.
countries because of our geographical proximity to the market.
“ We also compete well in terms of quality. We don’ t necessarily produce a better product, but we do produce a more consistent product, because we have a smaller number of producers, therefore making it easier to ensure that quality controls are in place throughout the industry,” says Trevor McKenzie, chairperson of the South African Berry Producers Association.
The total value of berry sales in the UK increased from around GBP170-million( about R2.2-billion) a year in 2001 to GBP668-million( about R8.6-billion) in 2010. Given the huge potential for growth in this sector, it should be no surprise then that the berry industry was singled out as one of the smaller, labour intensive industries with huge expansion and labour creation potential in the National Planning Commission’ s development plan.
Unlike the other fruits such as apples, grapes, citrus and avocados that are consumed locally and exported in large volumes, berries are more delicate to handle and have a very short shelf life. When cooled within one or two hours after harvest and packed under optimum conditions, berries can have a shelf life of eight to 10 days. A relatively brief period to allow for distribution and getting the berry from farms, such as, in the Western
Cape, to supermarket shelves in London and still have three or four days to be purchased by the consumer.
Consumer quality and shelf life is very much dependent on the handling and cooling rate of the freshly picked berry which arrives at the pack house at temperatures of between 20 and 30 ° C.
After picking in the growing tunnels, the berries are packed into punnets in the field, then transported to the pack
Glycol buffer tank with insulation in progress. Hot gas / water plate heat exchanger provides hot water to the packing line air handling unit.

34 www. coldlinkafrica. co. za COLD LINK AFRICA • May | June 2017