Volatile organic compounds production during spoilage of African horned cucumber fruits.
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Date
2011-07
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Abstract
Microorganisms associated with the production of volatile organic compound in spoilt
African horned cucumber have been isolated by standard plate count (SPC) and identified. The mean
aerobic colony count observed for bacteria ranged from 3.3 to 8.3 x 107 CFU/g while those of fungi
ranged from 4.0 x 103 to 1.1 x 104 CFU/g. The organisms isolated and identified included three species of
bacteria (Bacillus lentus, Bacillus firmus and Paenibacillus alveii) while three of fungi (Rhizopus
stolonifer, Mucor circinelloides, and Monascus ruber). GC-MS analysis revealed the presence of 11
volatile organic compounds in the healthy ripe African horned cucumber and 21 volatile organic
compounds in spoilt African horned cucumber. Six volatile organic compounds were common to spoilt
and healthy African horned cucumber while 1,2,3, trimethyl benzene, Decane 1,4-Dimethyl-2-ethyl
benzene, tetralin, 6- methyl tetralin, phenyl benzene (Lemonene), 2,3-dimethylnaphthale (Guajen), (1-
Ethyl-2-methyl-1-propenyl) benzene, Diphenyl methane (Ditan), Hexadecane, Heptadecane, 6-
octadecanoic acid (Z) and 1-Nondecanol were unique to spoilt African horned cucumber fruits. This study
suggests that these unique volatile organic compounds could provide baseline knowledge for curbing
postharvest losses and the volatile organic compound could form the basis for constructing a
metabolomics database for Nigeria.
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Keywords
GC-MS, spoilage organisms, metabolomics, post-harvest losses, volatile organic compounds
Citation
Ibrahim A D, Dogondaji A A, Aliero A A, Yakubu SE, Yusuf S B, Karaye I U. Volatile organic compounds production during spoilage of African horned cucumber fruits. International Journal of Applied Biology and Pharmaceutical Technology. 2011 Jul-Sept; 2(3): 296-302.