STUDIES ON THE MODE OF ACTION OF ROYAL JELLY IN HONEYBEE DEVELOPMENT: VIII. THE UTILIZATION OF SUGAR UNIFORMLY LABELED WITH 14C AND OF ASPARTIC-1-14C ACID

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Abstract
The amino acid requirements of developing honeybee larvae were determined by the indirect method using glucose-U-14C and sucrose-U-14C. The amino acids proline, hydroxyproline, alanine, glutamine, glutamic acid, α-amino-n-butyric acid, γ-amino-n-butyric acid, glycine, serine, and β-alanine were classified as nonessential. Cystine, aspartic acid, asparagine, isoleucine, leucine, phenylalanine, methionine, tryptophan, valine, threonine, tyrosine, lysine, histidine, and arginine were considered to be essential. The metabolism of sugar and aspartic acid are discussed in relation to caste development.