Anthocyanins from Clitoria ternatea Attenuate Food-Borne Penicillium expansum and its Potential Application as Food Biopreservative.
10.20307/nps.2017.23.2.125
- Author:
Chean Ring LEONG
1
;
Muhammad Afif KAMARUL AZIZI
;
Md Abu TAHER
;
Suzana WAHIDIN
;
Kok Chang LEE
;
Wen Nee TAN
;
Woei Yenn TONG
Author Information
1. Universiti Kuala Lumpur, Malaysian Institute of Chemical and Bioengineering Technology, Lot 1988 Kawasan Perindustrian Bandar Vendor, Taboh Naning, 78000 Alor Gajah, Melaka. wytong@unikl.edu.my
- Publication Type:Original Article
- Keywords:
Anthocyanin;
Antimicrobial activity;
Clitoria ternatea;
Penicillium expansum
- MeSH:
Anthocyanins*;
Asian Continental Ancestry Group;
Clitoria*;
Diffusion;
Fungi;
Germination;
Gram-Negative Bacteria;
Gram-Positive Bacteria;
Humans;
Hyphae;
Peas;
Penicillium*;
Spores, Fungal
- From:Natural Product Sciences
2017;23(2):125-131
- CountryRepublic of Korea
- Language:English
-
Abstract:
Clitoria ternatea or Commonly known blue pea, is a perennial climber crop native to Asian countries. The current study was aimed to evaluate the antimicrobial activity C. ternatea extract on food borne microorganisms and its antifungal effect on Penicillium expansum. The extract showed significant antimicrobial activity against 3 Gram positive bacteria, 2 Gram negative bacteria and 1 filamentous fungus on disc diffusion assay. The extract also showed good biocidal effect on all Gram positive bacteria tested and P. expansum. However, the kill curve analysis revealed that the fungicidal activity of the extract against P. expansum conidia was depend on the concentration of the extract and the time of exposure of the conidia to the extract. The scanning electron micrograph of the extract treated P. expansum culture showed alterations in the morphology of fungal hyphae. The germination of P. expansum conidia was completely inhibited and conidial development was totally suppressed by the extract, suggesting the possible mode of action of anthocyanin. Besides, the extract also exhibited 5.0-log suppression of microbial growth relative to control in the rice model. The results indicate the potential use of the C. ternatea anthocyanin as food biopreservative.
