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KMID : 0380619910230050614
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Korean Journal of Food Science and Technology
1991 Volume.23 No. 5 p.614 ~ p.618
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Efficacy of Grapefruit Seed Extract in the Preservation of Satsuma mandarin
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Abstract
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To investigate the efficacy of grapefruit seed extract (GFSE) in the preservation of Satsuma mandarin, the citrus fruits were treated with 0 (control, only wash), 100 ppm and 250 ppm, dried and stored for 8 weeks at 15-20℃ and 60% RH. While 80% of the control fruits were contaminated and decayed by Penicillium sp., forming the the greenish blue spores, 27% of 100 ppm GFSE-treated fruits were contaminated and decayed and only 13% of 250 ppm GFSE-treated fruits were contaminated and decayed aad only 13% of 250 ppm GFSE-treated samples were contaminated and not decayed by the fungi. GFSE showed marded inhibitory action against Penicillium sp. which was related to the decay of the citrus fruits in vitro experiments. Fungal growth was completely controlled through use of 500 ppm and the recommended range of GFSE to preserve the citrus fruits was 250-500 ppm. Transmission electron microscopic examination showed the fungal conidiospores the function of which was destroyed by dipping into GFSE.
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