Results 21 to 30 of about 49,433 (259)

Comparison of Dilute Organic and Sulfuric Acid Pretreatment for Enzymatic Hydrolysis of Bamboo

BioResources, 2014
Pretreating bamboo is essential to overcome the recalcitrance of lignocellulose for bioethanol production. In this study, the effectiveness of formic, acetic, and sulfuric acids in pretreating bamboo were compared. To measure pretreatment efficiency, the
Zhiqiang Li, Benhua Fei, Zehui Jiang
doaj   +1 more source

The therapeutic opportunities and pitfalls of using iron ion chelators to treat neurodegenerative diseases

FEBS Letters, EarlyView.
Although too much iron in the brain promotes neurodegeneration, iron ion chelators have had mixed effects in clinical trials. This review explains why; some chelators do not render the iron redox‐inactive (e.g., L1) whereas others do (e.g., desferrioxamine).
Barry Halliwell
wiley   +1 more source

Microwave-assisted preparation of naphthenic acid esters [PDF]

Journal of the Serbian Chemical Society, 2006
The synthesis of esters of natural petroleum acids of the naphthenic type assisted with microwave irradiation under the conditions of acid catalysis was carried out with various alcohols: methanol, ethanol, n-butanol and tert-butyl alcohol.
VERA CIRIN-NOVTA, KSENIJA KUHAJDA, SLAVKO KEVRESAN, JULIJAN KANDRA, LJUBICA GRBOVIC, DJURA VUJIC   +5 more
doaj   +3 more sources

Effect of neighboring carboxylic acid groups in sulfocarboxylic acid catalyzed hydrolysis of cellulose and corn stover

Applied Catalysis O: Open
Sulfoacetic and sulfosuccinic acids with -SO3H and -CO2H groups were tested as homogeneous catalysts for the cellulose and corn stover hydrolysis in studies to develop a cellulase enzyme mimicking catalyst.
Ananda S. Amarasekara, Bright H. Adu
doaj   +1 more source

A yeast model of 5‐oxoproline accumulation reveals a general toleration to 5‐oxoproline

FEBS Open Bio, EarlyView.
Using a yeast model, we show that even high accumulation of 5‐oxoproline causes only mild cellular stress and does not trigger oxidative stress. Instead, cells adapt by activating efflux pumps and diverse protective pathways, suggesting that previously proposed harmful effects of 5‐oxoproline may arise from indirect metabolic imbalances rather than the
Pratiksha Dubey, Vaishnavi Sanjayan, Praveen Singh, Shantanu Sengupta, Anand Kumar Bachhawat   +4 more
wiley   +1 more source

Effect of some Engineering Factors on The Fish Silage Making تأثیر بعض العوامل الهندسیة على تصنیع سیلاج الأسماک [PDF]

Journal of Soil Sciences and Agricultural Engineering, 2020
The study aims to effect of engineering factors, types of fish waste and types of acid on fish minced to make acid silage met the criteria of low cost and low technology process.
A. R. Obaia, M. Refaay
doaj   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

General instability of dipeptides in concentrated sulfuric acid as relevant for the Venus cloud habitability

Scientific Reports
Recent renewed interest in the possibility of life in the acidic clouds of Venus has led to new studies on organic chemistry in concentrated sulfuric acid.
Janusz J. Petkowski, Maxwell D. Seager, William Bains, Sara Seager   +3 more
doaj   +1 more source

Lipopolysaccharide uptake is augmented in lipopolysaccharide‐tolerant mouse macrophage‐like cells via increased CD14 expression

FEBS Open Bio, EarlyView.
In normal (nontolerant) cells, CD14 is crucial for both LPS uptake and LPS signaling. In LPS‐tolerant cells, in which LPS‐induced TNF‐α and IFN‐β production is suppressed, there is a dramatic increase in surface CD14 expression. The overexpressed CD14 in LPS‐tolerant cells is responsible for the enhanced LPS uptake without inducing pro‐inflammatory ...
Saeka Nishihara, Takayuki Manabe, Mika Jouta, Kiyoshi Kawasaki   +3 more
wiley   +1 more source

Spherical and rod-shaped nanocellulose from filter paper waste: A comparative study of acid hydrolysis

South African Journal of Chemical Engineering
Filter paper waste represents a significant yet underutilized feedstock for producing nanocellulose, a high-value nanomaterial essential for bioplastics and nanocomposites due to its biodegradability and mechanical strength.
Zahrotul Istiqomah, Holilah, Didik Prasetyoko, Sri Sunarmi, Hendro Juwono, Agus Wedi Pratama, Mohd Saiful Asmal Rani, Dina Wahyu Indriani, Victor Feizal Knight, Mohd Nor Faiz Norrrahim   +9 more
doaj   +1 more source