Harvest successive

The seaweed is harvested by raking and hand-gathering. Mechanized harvesting or use of divers has met with limited success. The collected seaweed is dried mechanically in many areas and shipped to the processing plants. 

The realisation that yeasts would produce dtric acid from n-paraffins was veiy attractive in the late 1960 s. Petroleum byproducts were plentiful and very cheap and there was detailed knowledge available on these processes because the use of hydrocarbon-utilising yeasts for single cell protein was well developed. The strategy was to use n-alkane to produce high yields erf dtric add-producing Candida spp. and to harvest two useful end products rather than just one. The process has not been commerdally successful however. Candida spp. produce mixtures of dtric add and isodtric add and the latter is not a useful product. In addition, since 1973 when petroleum prices rose sharply and have in fact continued to rise, the n-paraffins are no longer a cheap substrate. 

Initially, penicillin was produced in shallow earthenware "penicillin pots" that resembled bedpans used in hospitals. Milk bottles were then used. The problems with these approaches stemmed from the costs of the multiple inoculations that were needed and the costs of harvesting from multitudinous small cultures. Replacement of these small vessels by larger tray-like vessels, however, was not entirely successful the trays often warped during sterilisation. 

Since one of the key purposes of this study is to determine residue partitioning in the various processed commodities, every reasonable effort must be made to start the processing procedures with some level of residue in the RAC. If the RAC has residues present at harvest under normal GAP, then selective partitioning can be easily detected as the RAC is processed. However, if there is no residue in/on the RAC, the guideline indicates that exaggerated application rates may be required to obtain sufficient residue level to conduct a successful processing study. Usually a three- or... 

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