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Featured researches published by Guan Rongfa.


International Journal of Food Properties | 2018

Detection of ten biogenic amines in Chinese commercial soybean paste by HPLC

Li Jia; Guan Rongfa; Wei Xi-Ming; Chen Jianchu; Hu Yaqin; Liu Donghong; Ye Xingqian

ABSTRACT This paper aimed to develop a high-performance liquid chromatography (HPLC) method that can simultaneously detect ten biogenic amines (BAs) in commercially available soybean paste and to determine the contents of BAs in these products. Heptylamine (Hep) was used as the internal standard reagent and benzoyl chloride as the sample derivatization reagent; Inertsil ODS-3 chromatographic column was set as the stationary phase while the acetonitrile and 5 mmol/L ammonium acetate solution as the mobile phases; the samples were treated with gradient elution and detected at 254 nm (UV). Perchloric acid solution (0.4 mol/L) was employed as the sample extraction solvent to determine the contents of ten BAs in soybean paste products. All BAs were separated within 20 min. The methodological validation suggested good linearity, whereas the linear correlation coefficient of all standards was greater than 0.99 with the linear range of 0.1–80 μg/g, detection limits of 0.01–0.03 μg/g, and quantitation limits of 0.03–0.10 μg/g. For 17 commercially available soybean paste products involved in our study, different samples were distinguished from each other not only by the dramatic differences in the contents of BAs but also by the variance in BA types. Of these BAs, tyramine (Tyr) and agmatine (Agm) were found to be the highest contents in soybean paste products; the contents of histamine (His), 2-phenylethylamine (Phe), serotonin (Ser), spermidine (Spd), and putrescine (Put) were lower, followed by cadaverine (Cad), tryptamine (Try), and spermine (Spm). This method proved to be highly sensitive and effective in determining the contents of BAs in soybean paste products; there was a dramatic difference in the contents of ten BAs among different soybean paste products.


Archive | 2014

Lipidosome encapsulating epigallocatechin gallate and preparation method thereof

Luo Xiaobo; Guan Rongfa; Shen Haitao; Zhao Jin; Hu Ying; Ye Xingqian


Archive | 2014

Method for preparing liposome enveloped by catechin

Guan Rongfa; Fang Jianjun; Jiang Jiaxin; Liu Mingqi; Ma Jieqing; Jin Huiwei


Archive | 2015

Microwave assisted lentinan extraction equipment and technology

Liu Zhenfeng; Dai Shengjia; Zhang Li; Wang Tingshan; Guan Rongfa; Ye Xingqian


Archive | 2014

Method for testing nonyl phenol in food

Guan Rongfa; Hao Yunbin; Luo Xiaobo; Liu Ying; Xu Yaxin; Jiang Han; Liu Mingqi


Archive | 2015

Lysozyme-encapsulated liposome and preparation method thereof

Guan Rongfa; Wu Zhipan; Lyu Fei; Liu Mingqi; Wang Yanbo; Shen Haitao


Archive | 2018

ERSTELLUNG VON LIPOSOMAL VERKAPSELTEN LACTOFERRIN

Guan Rongfa; Shen Haitao; Liu Donghong; Lv Fei; Wang Yan; Liu Mingqi; Luo Zisheng; Jia Qiaojun; Wang Yanho; Yu Xiaoping


Archive | 2018

VERFAHREN ZUM HERSTELLEN VON ARBUTUS-ANTHOCYANIN-NANOLIPOSOMEN

Guan Rongfa; Shen Haitao; Ye Zihong; Jia Qiaojun; Lv Fei; Wang Yan; Wang Yanbo; Yang Kai; Wang Wei; Liu Mingqi; Liang Tisong


Archive | 2018

VERFAHREN ZUM BEWERTEN DER BIOLOGISCHEN SICHERHEIT VON NANO-ZINKOXID AUF DER GRUNDLAGE VON 3D-CACO-2-ZELLEN

Guan Rongfa; Shen Haitao; Ye Zihong; Jia Qiaojun; Liao Ningbo; Zou Ligen; Wang Wei; Liu Mingqi; Xia Qile; Yu Xiaoping; Ma Jieqing


RSC Advances (Web) | 2017

2Dおよび3D細胞培養における異なるサイズの酸化亜鉛ナノ粒子の毒性と炎症性効果の評価【Powered by NICT】

Wu Zhipan; Guan Rongfa; Tao Miao; Lyu Fei; Cao Guozhou; Liu Mingqi; Gao Jianguo

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Li Jia

Zhejiang University

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Yang Wenge

Ocean University of China

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