Some characteristics of lipases from thermophilic fungi isolated from palm oil mill effluent

被引：27

作者：

Razak, CNA

Salleh, AB

Musani, R

Samad, MY

Basri, M

机构：

[1] Enz. and Microbial Technol. Research, Fakulti Sains Pengajian Alam Sekitar, Universiti Pertanian Malaysia

来源：

JOURNAL OF MOLECULAR CATALYSIS B-ENZYMATIC | 1997年 / 3卷 / 1-4期

关键词：

lipases; rhizopus oryzae; R-rhizopodiformis; thermophilic fungi;

D O I：

10.1016/S1381-1177(96)00035-5

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Rhizopus oryzae and Rhizopus rhizopodiformis are thermophilic fungi isolated from palm oh mill effluent (POME). They are able to grow up to 50 degrees C and produce remarkable amounts of extracellular lipases. The extracellular lipases from both fungi displayed quite similar characteristics. The optimum pH and temperature for both lipases were 6.0 and 45 degrees C, respectively. However, lipase from R. rhizopodiformis was slightly more thermostable than that of R. oryzae lipase but the latter was more stable over broader pH ranges compared to the former, specially at acidic pH. Both the enzyme showed rapid loss of activities at temperatures above 50 degrees C and pH above 7.0. Lipase from R. oryzae showed broader specificities to substrates than R. rhizopodiformis, but both displayed Little reactivity for triacetin and polyoxysorbitan (Tween 20, 40, and 60). Both the lipases are 1,3 specific.

引用

页码：153 / 159

页数：7

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