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Author Yingjun Jing

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Quercetin-grafted chitosan prepared by free radical grafting: characterization and evaluation of antioxidant and antibacterial properties.

Yujia Diao, Xueqing Yu, Chaohong Zhang, Yingjun Jing,

Chitosan (CS) is considered a versatile biopolymer with promising applications. However, it is not a good chain-breaking antioxidant due to the lack of H-atom donors. In this work, CS was combined with quercetin (Q), a natural antioxidant, via a free radical-mediated procedure to strengthen the antioxidant capacity. The successful formation ... Read more >>

J Food Sci Technol (Journal of food science and technology)
[2020, 57(6):2259-2268]

Cited: 0 times

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Preparation, characterization, and functional evaluation of proanthocyanidin-chitosan conjugate.

Yingjun Jing, Jianghao Huang, Xueqing Yu,

In this study, chitosan (CS) was conjugated with proanthocyanidin (PA) by a free radical grafting reaction. The successful synthesis of PA-CS conjugate was confirmed by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance. The optimal molar ratio of PA to CS repeat unit for the preparation of PA-CS was ... Read more >>

Carbohydr Polym (Carbohydrate polymers)
[2018, 194:139-145]

Cited: 1 time

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Preparation, characterization, and functional evaluation of proanthocyanidin-chitosan conjugate

Yingjun Jing, Jianghao Huang, Xueqing Yu,

In this study, chitosan (CS) was conjugated with proanthocyanidin (PA) by a free radical grafting reaction. The successful synthesis of PA-CS conjugate was confirmed by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance. The optimal molar ratio of PA to CS repeat unit for the preparation of PA-CS was ... Read more >>

(Carbohydrate polymers.)
[2018, 194:139-145]

Cited: 2 times

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Optimized preparation, characterization, and antioxidant activity of chitooligosaccharide-glycine Maillard reaction products.

Fang Yan, Xueqing Yu, Yingjun Jing,

In this study, chitooligosaccharide (COS) and glycine (Gly) were selected to prepare Maillard reaction products, which were designated COS-Gly-MRPs. Changes in the FTIR and fluorescence spectra confirmed the formation of the COS-Gly-MRPs. Using ferric reducing antioxidant power (FRAP) as a response, the optimal reaction conditions, i.e., a time of 107 min, ... Read more >>

J Food Sci Technol (Journal of food science and technology)
[2018, 55(2):712-720]

Cited: 2 times

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The effective and selective separation of (-)-epigallocatechin gallate by molecularly imprinted chitosan beads.

Xueqing Yu, Yingjun Jing, Nana Yin,

The (<b>-</b>)-epigallocatechin gallate (EGCG) imprinted chitosan beads (EICBs) were fabricated for the effective and selective separation of EGCG. The EGCG molecules interacted with the amino groups of chitosan in the imprinting process, resulting in a highly porous structure of EICBs and more adsorption sites. Consequently, EICBs exhibited better adsorption performance ... Read more >>

J Food Sci Technol (Journal of food science and technology)
[2017, 54(3):770-777]

Cited: 0 times

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Cloning, characterisation and heterologous expression of an astacin metalloprotease, Sc-AST, from the entomoparasitic nematode Steinernema carpocapsae.

Yingjun Jing, Duarte Toubarro, Youjin Hao, Nelson Simões,

Steinernema carpocapsae is a parasitic nematode that is high virulent to insects. The parasitic juvenile reaches the insect haemocoelium by passing through mid-gut barriers and develops there. During invasion, the nematode was predicted to express a large set of proteases, including metalloproteases, one of which was sequenced and expressed in ... Read more >>

Mol Biochem Parasitol (Molecular and biochemical parasitology)
[2010, 174(2):101-108]

Cited: 16 times

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Variable volume fed-batch fermentation for nisin production by Lactococcus lactis subsp. lactis W28.

Zhaoliang Wu, Lin Wang, Yingjun Jing, Xueliang Li, Yanli Zhao,

A feeding technology that was suitable for improving the nisin production by Lactococcus lactis subsp. lactis W28 was established. The effects of initial sucrose concentration (ISC) in the fermentation broth, feeding time, and feeding rate on the fermentation were studied. It was observed that a fed-batch culture (ISC = 10 ... Read more >>

Appl Biochem Biotechnol (Applied biochemistry and biotechnology)
[2009, 152(3):372-382]

Cited: 5 times

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