Comparative study of different extraction processes for hemp (Cannabis sativa) seed oil considering physical, chemical and industrial-scale economic aspects was written by Devi, Vibha;Khanam, Shabina. And the article was included in Journal of Cleaner Production in 2019.Category: esters-buliding-blocks The following contents are mentioned in the article:
Hemp (Cannabis sativa) seed oil is a rare source of nourishment for vegetarian diets due to the unique ratio of ω-6/ω-3 fatty acid as 3:1. It is beneficial for cardiovascular health, skin, hormonal balance, diabetes, etc. These oil benefits encourage the chem. industries for its intensive extraction to accomplish the quantity and quality of the product. Despite being various processes i.e. supercritical fluid extraction, Soxhlet, percolation, ultrasonication, pyrolysis, pretreatment processes etc., none of above is the best in all aspects. Therefore, the present study investigates different extraction processes for hemp oil and compared its industrial-scale economic assessment, extraction yield, oil compositions and physico-chem. properties. Central composite design was employed to optimize the parameters of supercritical fluid extraction and ultrasonication processes. Quadratic models (P < 0.05) for both processes were developed with satisfactory R2 (>0.93). The maximum yield of 37.30% was estimated through ultrasonication treated Soxhlet process. Gas chromatog.-mass spectrometry demonstrated Soxhlet as the best-suited process while offering the optimum ω-6/ω-3 ratio. Further, gas chromatog.-mass spectrometry of hemp bio-oil obtained through pyrolysis identified the volatile and flammable materials to assure its suitability as bio-fuel. Economic analyses for different processes revealed supercritical fluid extraction as the most beneficial followed by Soxhlet, ultrasonication, ultrasonication treated Soxhlet and Soxhlet treated ultrasonication. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Category: esters-buliding-blocks).
Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Category: esters-buliding-blocks
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics