Results 11 to 20 of about 97,756 (253)

CHITOSAN PREPARATION WITH MULTISTAGE DEACETYLATION OF CHITIN AND INVESTIGATION OF ITS PHYSICOCHEMICAL PROPERTIES [PDF]

open access: yesIndonesian Journal of Chemistry, 2010
Study of chitosan prepared with chitin deacetylation by multistage alkali treatments has been done. Chitin was extracted from Lampung white shrimp's (Litophenaeus vannamei) shell. The FTIR spectroscopy was used to determine deacetylation degree of chitin/
Ahmad Budi Junaidi   +2 more
doaj   +2 more sources

Chemical deacetylation natural xanthan (Jungbunzlauer®)

open access: yesPolímeros, 2011
With the aim of adapting a method for removal of acetyl groups from xanthan, reactions of chemical deacetylation were carried out with natural xanthan (Jungbunzlauer®) with variations on the following parameters: biopolymer and alkali concentration ...
Ellen P. Pinto   +2 more
doaj   +1 more source

Deacetylation of HSC70 by SIRT2 promotes chaperone mediated autophagy

open access: yesAutophagy Reports
Chaperone-mediated autophagy (CMA) is a selective form of lysosomal protein degradation essential for cellular proteostasis. CMA is activated during cellular stress, such as starvation, and involves the chaperone protein HSC70 (HSPA8) recognizing ...
Byunghyun Ahn   +5 more
doaj   +2 more sources

The epigenetic regulatory effect of histone acetylation and deacetylation on skeletal muscle metabolism-a review

open access: yesFrontiers in Physiology, 2023
Skeletal muscles, the largest organ responsible for energy metabolism in most mammals, play a vital role in maintaining the body’s homeostasis.
Junjie Xu, Chenglong Li, Xiaolong Kang
doaj   +1 more source

Biochemical characterization of an acetylesterase from Bacillus subtilis and its application for 7-aminocephalosporanic acid deacetylation

open access: yesFrontiers in Microbiology, 2023
Deacetyl-7-aminocephalosporanic acid (D-7-ACA), which could be converted from 7-aminocephalosporanic acid (7-ACA), is a crucial starting material that is used for synthesizing industrial semisynthetic β-lactam antibiotics.
Xiaoliang Wang   +7 more
doaj   +1 more source

Substrate-Dependent Sensitivity of SIRT1 to Nicotinamide Inhibition

open access: yesBiomolecules, 2021
SIRT1 is the most extensively studied human sirtuin with a broad spectrum of endogenous targets. It has been implicated in the regulation of a myriad of cellular events, such as gene transcription, mitochondria biogenesis, insulin secretion as well as ...
Stacia Rymarchyk, Wenjia Kang, Yana Cen
doaj   +1 more source

Optimization of shrimp shell waste deacetylation for chitosan production [PDF]

open access: yes, 2016
Chitosan, a versatile natural polymer is an amino polysaccharide prepared by processing shrimp shell waste which involved deacetylation of chitin. To obtain high degree of deacetylation (DDA), several parameters should be performed during alkaline ...
Flornica Alca Ahing, Newati Wid
core   +2 more sources

Acetylation Is Crucial for p53-Mediated Ferroptosis and Tumor Suppression

open access: yesCell Reports, 2016
Although previous studies indicate that loss of p53-mediated cell cycle arrest, apoptosis, and senescence does not completely abrogate its tumor suppression function, it is unclear how the remaining activities of p53 are regulated.
Shang-Jui Wang   +6 more
doaj   +1 more source

Enhancement of degree of deacetylation of chitin in chitosan production [PDF]

open access: yes, 2008
Chitosan is made from crustacean shells by a chemical process involving demineralization, deproteinization, decolorization, and deacetylation. The process of deacetylation involves the removal of acetyl groups from the molecular chain of chitin, leaving ...
Stephenie, Ak Kalut
core   +2 more sources

Characterization and Deconstruction of Oligosaccharides in Black Liquor From Deacetylation Process of Corn Stover

open access: yesFrontiers in Energy Research, 2019
The National Renewable Energy Laboratory (NREL) developed low severity Deacetylation and Mechanical Refining (DMR) process under atmospheric pressure, generates highly fermentable, low toxicity sugar syrups and highly reactive lignin streams.
Wei Wang   +3 more
doaj   +1 more source

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