酿酒
釀酒
양주
LIQUOR MAKING
2012年
1期
98-100
,共3页
聚谷氨酸%生物絮凝剂%高岭土%絮凝条件
聚穀氨痠%生物絮凝劑%高嶺土%絮凝條件
취곡안산%생물서응제%고령토%서응조건
Poly （γ-glutamic acid）%bioflocculant%kaolin＇,flocculation conditions
研究了解淀粉芽孢杆菌L536（Bacillus amyloliquefaciens L536）产生的γ-聚谷氨酸的絮凝特性。以高岭土悬浊液为絮凝介质,菌株L536产γ-PGA在中性pH范围内、投加量为1.2g/L时,对高岭土的絮凝率达最大。Fe2＋、Ca2＋、Cu2＋、Fe3＋、Al3＋均能不同程度地提高γ-PGA对高岭土的絮凝活性。其中,Ca2＋的助凝效果最为显著,其最佳助凝浓度为0.09mol/L。另外,菌株L536产γ-PGA对于活性炭、Ca（OH）2也表现出较强的絮凝活性。
研究瞭解澱粉芽孢桿菌L536（Bacillus amyloliquefaciens L536）產生的γ-聚穀氨痠的絮凝特性。以高嶺土懸濁液為絮凝介質,菌株L536產γ-PGA在中性pH範圍內、投加量為1.2g/L時,對高嶺土的絮凝率達最大。Fe2＋、Ca2＋、Cu2＋、Fe3＋、Al3＋均能不同程度地提高γ-PGA對高嶺土的絮凝活性。其中,Ca2＋的助凝效果最為顯著,其最佳助凝濃度為0.09mol/L。另外,菌株L536產γ-PGA對于活性炭、Ca（OH）2也錶現齣較彊的絮凝活性。
연구료해정분아포간균L536（Bacillus amyloliquefaciens L536）산생적γ-취곡안산적서응특성。이고령토현탁액위서응개질,균주L536산γ-PGA재중성pH범위내、투가량위1.2g/L시,대고령토적서응솔체최대。Fe2＋、Ca2＋、Cu2＋、Fe3＋、Al3＋균능불동정도지제고γ-PGA대고령토적서응활성。기중,Ca2＋적조응효과최위현저,기최가조응농도위0.09mol/L。령외,균주L536산γ-PGA대우활성탄、Ca（OH）2야표현출교강적서응활성。
Flocculating conditions of γ-PGA produced by Bacillus amyloliquefaciens L536 were investigated.The flocculating activity got highest at the γ-PGA concentration of 1.2g/ L and in the neutral pH.The flocculating activity was synergistically simulated by the addition of cations,Ca2＋ was the optimum cation that remarkably promoted the flocculating activity.The results showed that the optimum flocculation conditions were CaCl2 of 0.09mol/L.γ-PGA had a high flocculating activity to some organic and inorganic suspension.
