Zhu Shunying

Bio: Zhu Shunying is an academic researcher from Wuhan University. The author has contributed to research in topics: Essential oil & Antimicrobial. The author has an hindex of 3, co-authored 4 publications receiving 648 citations.

Chemical composition and antimicrobial activity of essential oil ofAsarum caulescene

Abstract: Both essential oils of fresh and air-driedAsarum caulescene (Maxim.) were analyzed by GC-MS in three different polarities. The results show that thirty-four components were identified in the oils, and main compounds of both oils were β-pinene (7.63% vs. 20.72%), 2-carene (8.94% vs. 7.99%), β-phellandrene (7.80% vs. 14.39%), 1,8-cineole (8.91% vs. 13.29%) and germacrone (46. 64% vs. 6.64%), however, the content of monoterpene hydrocarbons (30.29% vs. 52.30%) and oxygenated sesquiterpenes (47.69% vs. 10.65%) of both oils was different. The antimicrobial activity of the oil was evaluated against 3 fungi and 11 bacteria including 7 clinical isolated strains. Our results showed that both oils presented a broad antimicrobial spectrum, and compared with the essential oil from fresh herb, the extracted oil from dried herb had better antimicrobial activity, its minimum inhibitory concentration (Cm) values of dried herb were 0. 16–2.5 g/L and lowest minimum bactericidal concentration (Cm) values was 0.31 g/L.

Inhibiting effects ofS. acus Linnaeus extracts on GLT-82 tumor cell lines

Abstract: HailongS. acus Linnaeus was chosen as the experimental material in the experiments and changes of cell morphology, forming rate of clone and changes of division index were conducted to identify the inhibiting effects of Hailong extract on human tumor cell lines (GLT-82). Four days after medication, most of the cells changed their normal morphology of tumor cells and became round, broken and even broke into pieces. The inhibiting rates could reach 75.1% on the fourth day. The division index reduced strongly and the clone could not form or the forming rate was very low. With the extract concentration increasing and the time prolonging, the inhibiting effect increased. These results indicate that Hailong has striking anti-tumor effects and will have a perfect future in the fields of treatment and prevention of cancer.

Application of Natural Antimicrobials for Food Preservation

Abstract: In this review, antimicrobials from a range of plant, animal, and microbial sources are reviewed along with their potential applications in food systems. Chemical and biochemical antimicrobial compounds derived from these natural sources and their activity against a range of pathogenic and spoilage microorganisms pertinent to food, together with their effects on food organoleptic properties, are outlined. Factors influencing the antimicrobial activity of such agents are discussed including extraction methods, molecular weight, and agent origin. These issues are considered in conjunction with the latest developments in the quantification of the minimum inhibitory (and noninhibitory) concentration of antimicrobials and/or their components. Natural antimicrobials can be used alone or in combination with other novel preservation technologies to facilitate the replacement of traditional approaches. Research priorities and future trends focusing on the impact of product formulation, intrinsic product parameters, and extrinsic storage parameters on the design of efficient food preservation systems are also presented.