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author:

陈勇强 (陈勇强.) [1] | 严芬 (严芬.) [2] | 叶秀云 (叶秀云.) [3] | 李仁宽 (李仁宽.) [4] | 陈冬梅 (陈冬梅.) [5] | 林娟 (林娟.) [6]

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Abstract:

采用观察透明圈与液态发酵测酶活相结合的方法,从腐烂的水果中筛选获得1株果胶酶产生菌G1。通过形态观察与18S rDNA序列分析,鉴定菌株G1为黑曲霉。对G1菌株的发酵工艺进行优化,确定最佳培养基配方(g/L):桔皮粉32,麸皮10,(NH4)2SO422,Na2HPO4·12H2O 8.4,KH2PO41.4,MgSO4·7H2O 1.0,CaCl20.1,FeSO4·7H2O 0.1,ZnSO4·7H2O 0.1,培养基初始pH 6.5;最佳发酵条件是:装液量50 mL/250 mL,转速180 r/min,接种量9%(体积分数),32℃培养7 d。在此条件下,果胶酶活力达到270.4 U/mL,比优化前提高了8.7倍。

Keyword:

发酵工艺 果胶酶 筛选鉴定 黑曲霉

Community:

  • [ 1 ] 福州大学生物科学与工程学院,福州350116

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Source :

中国食品学报

ISSN: 1009-7848

Year: 2014

Issue: 2

Page: 138-145

Cited Count:

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ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count: -1

30 Days PV: 5

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