CAJ | 학술논문

为评价海洋真菌裂殖壶菌的营养价值,测定该菌的基本营养成分、氨基酸组成及脂肪酸组成.结果显示,在两种不同的氮源条件下,裂殖壶菌的总蛋白、总脂、总糖及灰分分别为9.35%、42.83%、5.27%、4.85%(豆粕水解物为氮源)和42.51%、18.98%、6.38%、5.72%(酵母提取物为氮源).以轮虫蛋白的必需氨基酸(EAA)为标准,裂殖壶菌的必需氨基酸指数EAAI>0.9,为轮虫的优质蛋白源,但精氨酸或异亮氨酸不能完全满足轮虫需要.而以牡蛎蛋白的EAA为标准,该菌的EAAI为0.78～0.79,为牡蛎的可用蛋白源.该菌中含有高水平的DHA,含量可达14.29%,是一种优质的DHA强化饵料.另外,培养基中氮源种类的不同直接影响该菌的基本营养成分、氨基酸及脂肪酸组成.
위평개해양진균렬식호균적영양개치,측정해균적기본영양성분、안기산조성급지방산조성.결과현시,재량충불동적담원조건하,렬식호균적총단백、총지、총당급회분분별위9.35%、42.83%、5.27%、4.85%(두박수해물위담원)화42.51%、18.98%、6.38%、5.72%(효모제취물위담원).이륜충단백적필수안기산(EAA)위표준,렬식호균적필수안기산지수EAAI>0.9,위륜충적우질단백원,단정안산혹이량안산불능완전만족륜충수요.이이모려단백적EAA위표준,해균적EAAI위0.78～0.79,위모려적가용단백원.해균중함유고수평적DHA,함량가체14.29%,시일충우질적DHA강화이료.령외,배양기중담원충류적불동직접영향해균적기본영양성분、안기산급지방산조성.
In order to evaluate nutritional values of a marine fungus, Schizochytrium limanium, its basic nutritional components, amino acid and fatty acid compositions were analyzed. Results indicated that the contents of proteins, lipids, carbohydrates and ash in Schizochytrium limanium were 9.35%, 42.83%, 5.27% and 4.85% using soybean hydrolysates as nitrogen resource and 42.51%, 18.98%, 6.38% and 5.72% using yeast as nitrogen resource, respectively. Using rotifer protein as the reference, essential amino acid index (EAAI) in Schizochytrium limaniurn were more than 0.90; using oyster protein as the reference, EAAI in Schizochytrium limanium were 0.78-0.79, which suggested that Schizochytrium limanium was the best quality protein material for rotifer and oyster. However, Schizochytrium limanium had limited amino acids such as Arg and Ue for rotifer. Totally 14.29% DHA was determined in Schizochytrium limanium, which also suggested it was a good DHA source. Moreover, nitrogen sources exhibited a direct effect on contents of nutritional components, amino acid and fatty acid compositions.