Oxygenated Sterol Derivatives. Their Identification from the Fungus-Infected Silkworm Carcass, Bombyx cum Botryte, and Their Effects on Growth and Sterol Metabolism of the Silkworm, Bombyx mori

Abstract

Several oxygenated sterols, e.g. ergosterol peroxide, 7-oxocholesterol and 7β-hydroxycholesterol, were identified from the fungus-infected carcass of silkworm, Bombyx cum Botryte. However, they were nontoxic to the silkworm Bombyx mori reared on a diet containing these oxygenated sterols (0.01%) together with sitosterol or cholesterol (0.1%).