scholarly journals Epsilon-poly-L-lysine: Recent Advances in Biomanufacturing and Applications

Author(s):  
Liang Wang ◽  
Chongyang Zhang ◽  
Jianhua Zhang ◽  
Zhiming Rao ◽  
Xueming Xu ◽  
...  

ε-poly-L-lysine (ε-PL) is a naturally occurring poly(amino acid) of varying polymerization degree, which possesses excellent antimicrobial activity and has been widely used in food and pharmaceutical industries. To provide new perspectives from recent advances, this review compares several conventional and advanced strategies for the discovery of wild strains and development of high-producing strains, including isolation and culture-based traditional methods as well as genome mining and directed evolution. We also summarize process engineering approaches for improving production, including optimization of environmental conditions and utilization of industrial waste. Then, efficient downstream purification methods are described, including their drawbacks, followed by the brief introductions of proposed antimicrobial mechanisms of ε-PL and its recent applications. Finally, we discuss persistent challenges and future perspectives for the commercialization of ε-PL.

Author(s):  
Shukla PK ◽  
Singh MP ◽  
Patel R

Indole and its derivatives have engaged a unique place in the chemistry of nitrogen heterocyclic compounds. The recognition of the plant growthhormone, heteroauxin, the significant amino acids, tryptamine & tryptophan and anti-inflammatory drug, indomethacine are the imperativederivatives of indole which have added stimulus to this review work. Isatin (1H-indole-2,3-dione), an indole derivative of plant origin. Althoughit is a naturally occurring compound, but was synthesized by Erdmann and Laurent in 1840 before it was found in nature. Isatin is a versatileprecursor for many biologically active molecules and its diversified nature makes it a versatile substrate for further modifications. It is concernedin many pharmacological activities like anti-malarial, antiviral, anti-allergic, antimicrobial etc; isatin and its derivatives have been also found todemonstrate promising outcomes against various cancer cell lines. This review provides a brief overview on the recent advances and futureperspectives on chemistry and biological aspects of isatin and its derivatives reported in the recent past.


2020 ◽  
Vol 26 (42) ◽  
pp. 5468-5487 ◽  
Author(s):  
Ankita Sood ◽  
Bimlesh Kumar ◽  
Sachin Kumar Singh ◽  
Pankaj Prashar ◽  
Anamika Gautam ◽  
...  

Flavonoids are secondary metabolites that are widely distributed in plants. These phenolic compounds are classified into various subgroups based on their structures: flavones, flavonols, isoflavones, flavanones, and anthocyanins. They are known to perform various pharmacological actions like antioxidant, anti-inflammatory, anticancer, antimicrobial, antidiabetic and antiallergic, etc. Diabetes is a chronic progressive metabolic disorder that affects several biochemical pathways and leads to secondary complications such as neuropathy, retinopathy, nephropathy, and cardiomyopathy. Among them, the management of diabetic neuropathy is one of the major challenges for physicians as well as the pharmaceutical industries. Naturally occurring flavonoids are extensively used for the treatment of diabetes and its related complications due to their antioxidant properties. Moreover, flavonoids inhibit various pathways that are involved in the progression of diabetic neuropathy like the reduction of oxidative stress, decrease in glycogenolysis, increase glucose utilization, decrease in the formation of advanced glycation end products, and inhibition of the α-glucosidase enzyme. This review entails current updates on the therapeutic perspectives of flavonoids in the treatment of neuropathic pain. This manuscript explains the pathological aspects of neuropathic pain, the chemistry of flavonoids, and their application in amelioration of neuropathic pain through preclinical studies either alone or in combination with other therapeutic agents.


2016 ◽  
Vol 16 (15) ◽  
pp. 1727-1739 ◽  
Author(s):  
Guangtao Zhang ◽  
Wenjun Zhang ◽  
Subhasish Saha ◽  
Changsheng Zhang

2021 ◽  
Vol 17 ◽  
pp. 100264
Author(s):  
Vicky Subhash Telang ◽  
Rakesh Pemmada ◽  
Vinoy Thomas ◽  
Seeram Ramakrishna ◽  
Puneet Tandon ◽  
...  

2021 ◽  
Author(s):  
Wooram Um ◽  
Pramod Kumar E. K. ◽  
Jeongjin Lee ◽  
Chan Ho Kim ◽  
Dong Gil You ◽  
...  

This review focuses on recent advances in augmented sonodynamic therapy (SDT) using engineered nanomaterials, and the mechanism of SDT for discussing future perspectives.


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