女王ハチ幼虫の日齢に伴うローヤルゼリーの窒素成分組成の消長
Changes in Nitrogenous Components of Royal Jelly from Queen Larvae of Different Ages

Tetsuo TAKENAKA, Takashi ECHIGO
1982 Nippon Nogeikagaku-kaishi  
Chemical components of royal jelly (RJ) were investigated from larvae of different ages. The moisture and sugar contents were lowest in RJ collected from the youngest cell (24 hr after graft ing) and increased in the 48 hr samples, then de creased thereafter. The crude protein content and the titratable acidity of the samples showed a Ushaped change, in which the highest amount was observed in RJ obtained from the youngest larvae. The amount of soluble and protein nitrogen and free amino acids
more » ... d free amino acids were found to be constant through out the examined periods. The soluble protein of the RJ obtained from youngest larvae was separated by Sephadex G-100 chromatography and by poly acrylamide gel electrophoresis. The chromatogra phic and electrophoretic patterns of the protein fractions of the different RJ were similar.
doi:10.1271/nogeikagaku1924.56.931 fatcat:fft32eyykrfahan4tfuv7plhri