|Title:||瓊麻濃縮葉蛋白之抽取試驗||Other Titles:||Extraction of Leaf Protein concentrate from Sisal (Agava sisalan)||Authors:||林禮輝
|Issue Date:||8-Jun-1984||Publisher:||農業試驗所||Journal Volume:||33||Journal Issue:||2||Start page/Pages:||159-168||Source:||中華農業研究||Abstract:||
瓊麻（Agava sisalan）葉片及其製麻麻渣中含有6-9%粗蛋白，其中以水溶性及碱溶性蛋白質佔大部分，約為純蛋白質之85%。葉蛋白之抽出則以水及0.03-0.1N 氫氧化鈉溶液為最佳溶媒。加稀鹽酸調節pH 值至3.5-4.0，則為較適宜之蛋白質凝聚法。蛋白質回收率依原料不同而異，鮮瓊麻葉片，濕式製麻麻渣及乾式製麻麻渣分別為47%、66%及30%。
The leaves of sisal (Agava sisalan) and its fiber residue contained 5-9% crude protein. Most of them were water soluble (albumin) and alkaline soluble (glutelin) protein, about 85% of simple protein. The best solvent of leaf protein extraction were water and dilute alkaline solution. The suitable coagulation method for sisal protein is that adjust pH value to the range of 3.5 to 4.0 with dilute hydrochloric acid. The recovery of protein for fresh sisal leaves, wet fiber residue and dried fiber residue were 47%, 66% and 30%, respectively.
According to the chemical analysis and amino acid composition, the sisal LPC was found containing 28.4% crude protein, 30.2% crude fat, 4.5% crude fiber, 8.8% ash and less threonine and methionine.
Residues of protein extraction contained much more crude fiber and carbohydrate. Defat treatment could make the protein content of sisal LPC increased to 38%.
|Appears in Collections:||1.台灣農業研究(1950～迄今)|
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