Antimicrobial activity of Paeonia lactiflora flower extracts on spoilage organisms in fruit and vegetable and its application in preservation of cherry tomato

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  • 1(The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China) 2(The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, School of Biotechnology, Research Centre of Industrial Microbiology, Wuxi 214122, China) 3(Engineering Research Center of Condiments Industry of Zhejiang Province, Yiwu 322000, China)

Online published: 2018-03-19

Abstract

The antibacterial activity ofPaeonia lactifloraflower extracts on fruit and vegetable spoilage organisms was investigated by determining the diameter of inhibition zone, minimum inhibitory concentration and minimum bactericidal concentration. Antibacterial mode was studied based on the cell growth, conductivity, content and soluble sugar ofBacillus subtilis. Fresh-keeping effect on cherry tomatoes ofP.lactifloraflower extracts was studied by determining the rate of corruption, weight loss, soluble solids and Vc content. The results showed that theP.lactifloraflower extracts had a strong inhibitory effect on bacteria and yeasts. The minimum inhibitory and minimum bactericidal concentrations toB. subtiliswere especially as low as 2 mg/mL and 4 mg/mL, respectively. The extracts exerts a bacteriostatic effect by increasing the permeability and destroying the structure of the cell membrane. Compared with the control, theP.lactifloraflower extracts can obviously reduce the corruption rate and weight loss rate of cherry tomatoes, and reduce the loss of soluble solids and Vc, which is an excellent preservative with promising application.

Cite this article

LI Wen-xia et al . Antimicrobial activity of Paeonia lactiflora flower extracts on spoilage organisms in fruit and vegetable and its application in preservation of cherry tomato[J]. Food and Fermentation Industries, 2018 , 44(2) : 228 . DOI: 10.13995/j.cnki.11-1802/ts.015384

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