抄録
Sericin, which is about 25% of the total cocoon shell of the silkworm Bombyx mori, has a skin moisturizing effect, and an inhibitory effect against lipid peroxidation and tyrosinase activity. According to these properties, it has come into use in the skin care industry. To effectively produce intact sericin protein, a new silkworm race “Sericin Hope” was developed by cross breeding an Nd mutant (naked pupa) and a high cocoon yielding strain KCS83. The new strain spins sericin cocoons at a frequency of 99%. The cocoon weight is more than 4times heavier than that of the Nd mutant. The Sericin Hope cocoon, named “Virgin Sericin”, can be gelled in water with less hydrolyzing by autoclaving at 110°C for 10min. The Virgin Sericin gel can be easily emulsified, firmly creamed or made into foam with 5% oil.
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