The uses of microorganisms in bioremediation have gained great attention, mainly on its enzyme activity. The pH is a crucial factor in bioremediation process through the enzymatic activity of microorganisms that mainly convert the harmful substances into the harmless one. It's important to cultivate the microorganisms in a substrate with suitable pH to support its growth and to control the metabolic mechanism in the cell. In this study, the first step was to extract of crude enzyme. Palm Oil Mill Effluent (POME) with different pH (3,5,7 and 9) was used as substrate for amylase production and the amylase activity was calculated according to the DNSA (3, 5 dinitro salicylic acid) method. Best pH for amylase production that may have potential in industrial application was found to be pH 9 on the day 3 with (2.6828 U/mL).

1.
Singh
,
R.
Proxy Warfare. By Andrew Mumford. Cambridge, UK: Polity Press, 2013
.”.
Global Governance: A Review of Multilateralism and International Organizations
22
.
1
(
2016
):
174
175
.
2.
Reddy
N.S.
,
Nimmagadda
A.
,
Sambasiva Rao
K.R.S.
An overview of the microbial α-amylase family
.
Afr. J. Biotechnol.
2003
;
2
:
645
648
.
3.
Gurung
N
,
Ray
S
,
Bose
S
,
Rai
V.
A broader view: Microbial enzymes and their relevance in industries, medicine, and beyond
.
BioMed Res Int.
2013
;
2013
:
329121
.
4.
Miller
G.L.
Use of dinitrosalicyclic acid reagent for determination of reducing sugar
.
Anal Chem.
1959
;
31
:
426
429
5.
Wang
S
,
Lin
C
,
Liu
Y
,
Shen
Z
,
Jeyaseelan
J
,
Qin
W.
Characterization of a starch-hydrolyzing α-amylase produced by Aspergillus niger WLB42 mutated by ethyl methanesulfonate treatment
.
Int J Biochem Mol Biol.
2016
;
7
(
1
):
1
10
. Published 2016 Jun 1
6.
Alva
S
,
Anupama
J
,
Savla
J
,
Chiu
Y
,
Vyshali
P
,
Shruti
M
,
Yogeetha
B
,
Bhavya
D
,
Purvi
J
,
Ruchi
K.
Production and characterization of fungal amylase enzyme isolated from Aspergillus sp. JGI 12 in.solid state culture
.
Afr J Biotechnol.
2007
;
6
:
576
581
.
7.
Ikram-ul-Haq
AR
,
Ashraf
H
,
Shah
AH
.
Isolation and screening of fungi for the biosynthesis of alpha amylase
.
Biotechnology.
2002
;
2
:
61
66
.
8.
Kaneko
A
,
Sudo
S
,
Takayasu-Sakamoto
Y
,
Tamura
G
,
Ishikawa
T
,
Oba
T.
Molecular cloning and determination of the nucleotide sequence of a gene encoding an acid-stable α-amylase from Aspergillus kawachii
.
J Ferment Bioeng.
1996
;
81
:
292
298
.
9.
Shafique
S
,
Bajwa
R
,
Shafique
S.
Screening of Aspergillus niger and A. flavus strains for extra cellular alpha-amylase activity
.
Pak J Bot.
2009
;
41
:
897
905
.
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