Ergosterol: index for monitoring fungal damage in rough rice

Seib P.A., . and Naewbanij M., . and Burroughs R., . and L. Seitz, . (1984) Ergosterol: index for monitoring fungal damage in rough rice. In: Seminar on Health and Ecology in Grains Post-Harvest Technology, 21-24 Aug 1984, Kuala Lumpur (Malaysia).

Ergosterol determined by TLC-UV method was used to assess deterioration in stored rough rice. The percent discoloured kernels and production of carbon dioxide (dry matter loss) were also measured. These three indices of deterioration were monitored in both long and medium grain rough rice stored at four temperatures (35 29.4 23.9 and 18.3 deg ) and three moisture levels (20 18 and 16%) in a laboratory sized storage chamber. Ergosterol and percent discolored kernels were measured at 0.10 0.25 0.38 and 0.50 percent dry matter loss. In stored long and medium-grain rough rice the ergosterol level correlated well with the percentage discolored kernels (r=0.95). The discolored kernels correlated only fairly well (r=0.62) with dry matter loss. Ergosterol in rough rice at zero percent discolored kernels was found to be 3/ug/g dry solid which increased line rely to 25 ug/g at 57 percent discolored kernels

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Abstract

Ergosterol determined by TLC-UV method was used to assess deterioration in stored rough rice. The percent discoloured kernels and production of carbon dioxide (dry matter loss) were also measured. These three indices of deterioration were monitored in both long and medium grain rough rice stored at four temperatures (35 29.4 23.9 and 18.3 deg ) and three moisture levels (20 18 and 16%) in a laboratory sized storage chamber. Ergosterol and percent discolored kernels were measured at 0.10 0.25 0.38 and 0.50 percent dry matter loss. In stored long and medium-grain rough rice the ergosterol level correlated well with the percentage discolored kernels (r=0.95). The discolored kernels correlated only fairly well (r=0.62) with dry matter loss. Ergosterol in rough rice at zero percent discolored kernels was found to be 3/ug/g dry solid which increased line rely to 25 ug/g at 57 percent discolored kernels

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Item Type:	Conference or Workshop Item (Paper)
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. SB189.73 A816 1984 Call Number
AGROVOC Term:	Ergosterol
AGROVOC Term:	Mycoses
AGROVOC Term:	Fungal diseases
AGROVOC Term:	Rice
Geographical Term:	MALAYSIA
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:51
URI:	http://webagris.upm.edu.my/id/eprint/7396

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