Limonoids in Pummelos [Citrus grandis (L.) Osbeck] |
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Authors: | HIDEAKI OHTA SHIN HASEGAWA |
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Affiliation: | Author Ohta is with Chugoku National Agricultural Experiment Station, Ministry of Agriculture, Forestry and Fisheries of Government of Japan, Fukuyama, Japan. Author Hasegawa is with the USDA, ARS Western Regional Research Center, 800 Buchanan St., Albany CA 94770. |
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Abstract: | Juice and seeds from 16 cultivars of mature pummelo fruits were analyzed for limonoid content. Pummelo juice contained an average of 18 ppm limonin and 29 ppm total limonoid glucosides. Compared to other juices, ptmnnelo contained very high concentrations of limonin and very low concentrations of limonoid glucosides. Limonin, nomilin, obacunone and trace amounts of deacetyhromilin were found in pummelo seeds. The 17–β-D-glucopyranoside derivatives (glucosides) of nomilin, nomilinic acid and obacunone were also present. Total limonoid aglycone concentration in the seeds ranged from 773 ppm to 9,900 ppm and total limonoid glucosides ranged from 130 ppm to 1,912 ppm. |
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Keywords: | pummelos citrus limonin limonoids bitter principle |
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