Harvesting techniques

Whilst the acids and many of their derivatives currently find niche applications in the market sectors identified above, factors related to price, volume of supply and consistency have all limited commercial viability. In the longer term, reduced costs and improved consistency through improved growing and harvesting techniques, coupled with an increased requirement for biodegradability, will increase demand for fatty acids. 

Fantozzi, F. Bartocci, P. D Alessandro, B. Testarmata, F. Fantozzi P. Carbon footprint of truffle sauce in central Italy by direct measurement of energy consumption of different olive harvesting techniques. J. Clean. Prod. 2015, 87,188-196. 

The goal was to establish commercial harvest techniques and to determine areas where commercial quantities of geoducks could be found. This would allow the new industry to be established, still protect the consuming public from any possible PSP contamination, and delineate areas of commercial concentration. The beds surveyed were chosen as a result of previous knowledge and tips from fishermen, or favorable-looking bottom conditions. 

Possible solutions - Harvesting has much in common with brood-stock acquisition, in that it deals with concentrating and capturing sexually mature, i.e., marketable animals. In fact, the brood-stock is often sorted out from the harvested animals to start a new culture cycle. Attractive chemical cues, such as sex pheromones involved in chemical communication between adult crustaceans, might be integrated into the aforementioned harvesting techniques, to increase the efficiency and rapidity of animal capture and to reduce the stress and loss of animals associated with this action. For example, such chemical cues might be released from traps or the collection basin. 

Lee AK, Lewis DM, Ashman PJ Microbial flocculation, a potentially low-cost harvesting technique for marine microalgae for the production of biodiesel, J Appl Phycol 21(5) 559-567, 2009. 

The Chinese tallow tree, a deciduous tree, has been cultivated in China for centuries partly because the leaves yield a black dye used for dyeing silk. The tree grows to a height of 7-10 m under wet subtropical conditions and is found in China, USA and Pakistan. Recent studies suggest that with proper harvesting techniques it could provide an oil yield per hectare similar to the oil palm (Morgan and Shultz, 1981). 

Major harvesting techniques include flocculation, flotation, gravity sedimentation, centrifugation and filtration. 

Kartus J, Ejerhed L, Semert N, Brandsson S, Karlsson J (2000) Comparismi of traditional and subcutaneous patellar tendon harvest a prospective smdy of draior site-related problems after anterior cruciate ligament reconstruction using different graft harvesting techniques. Am J... 

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