篇名 | Enzymatic Aqueous Processing of Coconuts |
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卷期 | 1:1 |
作者 | Bih-King Chen 、 Levente L. Diosady |
頁次 | 055-061 |
關鍵字 | enzymatic aqueous extraction 、 polysaccharide 、 endohemicellulase 、 immobilized enzyme 、 freeze drying 、 reverse osmosis 、 isoelectric precipitation 、 Scopus |
出刊日期 | 200303 |
Finely ground desiccated coconut meat was incubated in an aqueous medium at 50- 55ºC with a commercially available enzyme system. After incubation, the coconut slurry was centrifuged into four parts: a clear oil phase, an emulsion layer, an aqueous phase, and a solid phase consisting of the extracted coconut meal. The enzymatic treatment released about 84% of the oil present in the starting coconut meat, producing a brilliant, light yellow oil that had the characteristic pleasant coconut aroma. Some of the water in the aqueous phase was removed to produce a more concentrated protein solution with intense coconut flavour. The wet solid phase was freeze dried, and then extracted with aqueous alkali, dissolving nearly 88% of the protein from the solid. Centrifugation separated the extract solution from the insoluble residue. The acidification of the extract to the isoelectric region precipitated 93.5% of the dissolved protein. The freeze-dried precipitated coconut protein was a fine, odourless white powder with ~90% (N×6.25) protein content.