GUO Jin-ying,LI Tong-hui,ZHU Bei-ru,REN Guo-yan,CUI Guo-ting,LI Zheng-jun,FENG Hui-min
Food and Fermentation Industries. 2015, 41(8): 181.
This study aimed to compare and analyze the nutrient contents of cultured and wild Nostoc flagelliforme.Crude protein,fat,polysaccharide were measured in the cultured and wild Nostocflagelliforme were analyzed.The contents of amino acids,Ca,Mg,Cu,Zn Sr,Fe and Se were determined using HPLC and ICP-OES.The results indicated that crude protein and fat contents accounted for 26.17％ and 0.23％ (w/w) in cultured Nostoc flagelliforme,while 23.05％ and 0.31％ in the wild Nostoc flagelliforme.Exopolysaccharide contents reached 36.95 mg/L under cultivated conditions.Capsular polysaccharide contents in cultured and wild Nostoc flagelliforme were 15.03 mg/kg and 13.84 mg/kg,respectively.The total amino acids contents were 21.99 mg/g and 21.20 mg/g,essential amino acids contents were 11.73 mg/g and 7.97 mg/g.The elements of Ca,Mg,Cu,Zn,Sr,Fe,Se in the cultured Nostoc flagelliforme were rich,and Mg,Cu,Zn,Se were 2.9,3.4,3.8,and 1.6 times higher than that of in wild one.In conclusion,the cultured Nostocflagelliforme can secrete more exopolysaccharide.The contents of crude protein,fat,protein,amino acid,Ca,Sr,Fe were similar with wild Nostoc flagelliforme.Cultured Nostoc flagelliforme has great prospects for development.
