Problem
Harvested vegetables get transported in ambient conditions from the growing farms to the pack house. Since temperature and bacterial contamination are the main contributors to decay rate, these factors need to be addressed as soon as the vegetables are received by the pack house.
It is therefore important to maintain sanitary conditions in all areas where produce is washed and packed.
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Post Harvest Washing |
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Problem:
High levels of Iron and magnesium are found in the borehole water supply. These levels need to be reduced to ensure ideal water quality. Secondly, high levels of bacteria counts are also present in the pack house process. One of the post harvest factors that influences decay is proper sanitation in the packing stage. It is important to maintain sanitary conditions in all areas where produce is packed. Organic matter (culls, extraneous plant parts and soil) can act as substrates for decay-causing pathogens. Chlorine readily kills microorganisms suspended in dump tanks and flumes if the amount of available chlorine is adequate. Organic matter in the water inactivates chlorine, and levels of chlorine must be constantly monitored.
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Problem:
High levels of Iron and magnesium are found in the borehole water supply. These levels need to be reduced to ensure ideal water quality. Secondly, high levels of bacteria counts are also present in the pack house process. One of the post harvest factors that influences decay is proper sanitation in the packing stage. It is important to maintain sanitary conditions in all areas where produce is packed. Organic matter (culls, extraneous plant parts and soil) can act as substrates for decay-causing pathogens. Chlorine readily kills microorganisms suspended in dump tanks and flumes if the amount of available chlorine is adequate. Organic matter in the water inactivates chlorine, and levels of chlorine must be constantly monitored.
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Problem:
Proper sanitation of the incoming raw water at a bottling plant in South Africa is of utmost importance. Failure to do proper sanitation will have serious health implications, as most of the water is used in the process for the manufacture of cold drinks for human consumption. Calcium Hypochlorite was dissolved in a tank and it was dosed by means of a small chemical dosing pump into the make-up water line. When the incoming water flow rate increased the Calcium Hypochlorite dosing pump needed to be adjusted manually to ensure the correct levels were maintained for proper sanitation. No holding tank was utilized, thus the incoming flow rate monitoring was critical to the disinfection process. The bottling plant was interested in supplying a certain line for Coca-Cola, but could not meet the safety standards on sanitation that Coca-Cola required.
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Food & Farming 