Results 11 to 20 of about 208,937 (301)

The pH optimum of soil exoenzymes adapt to long term changes in soil pH [PDF]

open access: yesSoil Biology and Biochemistry, 2019
Soil exoenzymes released by microorganisms break down organic matter and are crucial in regulating C, N and P cycling. Soil pH is known to influence enzyme activity, and is also a strong driver of microbial community composition; but little is known about how alterations in soil pH affect enzymatic activity and how this is mediated by microbial ...
Jérémy Puissant   +10 more
openaire   +4 more sources

The ‘pH optimum anomaly’ of intracellular enzymes of Ferroplasma acidiphilum [PDF]

open access: yesEnvironmental Microbiology, 2006
Summary A wide range of microorganisms, the so‐called acidophiles, inhabit acidic environments and grow optimally at pH values between 0 and 3. The intracellular pH of these organisms is, however, close to neutrality or slightly acidic.
Golyshina, Olga V   +3 more
openaire   +4 more sources

Soil pH Management for Optimum Commercial Fruit Production in Florida

open access: yesEDIS, 2014
Soil pH is one of the most important soil chemical properties and affects nutrient bioavailability and microbial activity. The purpose of this article is to provide an overview for faculty, crop consultants, crop advisors, fruit growers, and students ...
Guodong Liu   +3 more
doaj   +6 more sources

The first fungal laccase with an alkaline pH optimum obtained by directed evolution and its application in indigo dye decolorization

open access: yesAMB Express, 2019
Engineering of fungal laccases with optimum catalytic activity at alkaline pH has been a long-lasting challenge. In this study, a mutant library containing 3000 clones was obtained by error-prone PCR to adapt the optimum pH of a fungal laccase Lcc9 from ...
Qiang Yin   +7 more
doaj   +2 more sources

Characterization of an invertase with pH tolerance and truncation of its N-terminal to shift optimum activity toward neutral pH. [PDF]

open access: yesPLoS ONE, 2013
Most invertases identified to date have optimal activity at acidic pH, and are intolerant to neutral or alkaline environments. Here, an acid invertase named uninv2 is described.
Liqin Du   +5 more
doaj   +2 more sources

Sequence homolog-based molecular engineering for shifting the enzymatic pH optimum

open access: yesSynthetic and Systems Biotechnology, 2016
Cell-free synthetic biology system organizes multiple enzymes (parts) from different sources to implement unnatural catalytic functions. Highly adaption between the catalytic parts is crucial for building up efficient artificial biosynthetic systems ...
Fuqiang Ma   +7 more
doaj   +2 more sources

PH OF THE TOPICAL DRUG VEHICLE: SELECTING AN OPTIMUM VALUE AND ROLE OF THE BUFFER SYSTEM

open access: yesVestnik Dermatologii i Venerologii, 2017
The following three groups of factors must be taken into consideration for selecting an optimum pH value of a topical drug: pharmaceutical, pharmacological and compatibility factors.
A. S. Dukhanin
doaj   +2 more sources

Potential of on-line visible and near infrared spectroscopy for measurement of pH for deriving variable rate lime recommendations [PDF]

open access: yes, 2013
This paper aims at exploring the potential of visible and near infrared (vis-NIR) spectroscopy for on-line measurement of soil pH, with the intention to produce variable rate lime recommendation maps.
Yücel Tekin   +6 more
core   +1 more source

Penurunan Kadar Metilen Biru Dalam Limbah Batik Sokaraja Menggunakan Sistem Fe2O3-H2O2-UV

open access: yesJurnal Rekayasa Kimia & Lingkungan, 2018
Telah dilakukan penelitian mengenai penurunan kadar zat warna metilen biru pada limbah cair batik Sokaraja dalam sistem Fe2O3-H2O2-UV. Dalam penelitian ini dilakukan beberapa perlakuan antara lain penentuan berat Fe2O3 optimum, konsentrasi H2O2 optimum ...
Dian Windy Dwiasi   +2 more
doaj   +1 more source

IMMOBILIZATION OF PAPAIN ON CHITOSAN

open access: yesIndonesian Journal of Chemistry, 2010
In this study, papain was immobilized on chitosan with Mg(II) cosslinked agent. Studies on free and immobilized papain systems for determination of optimum pH, optimum temperatur, thermal stability and reusability were carried out.
Sari Edi Cahyaningrum   +3 more
doaj   +1 more source

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