Feeding of [3-¹³C, 2-¹⁵N]arginine, 38a, unequivocally established that the β-
arginine moiety of blasticidin S, 1, was formed from α-arginine by an intramolecular
migration of the α-amino group to the β- position. Further feedings using chirally
deuteriated arginines 38e and 38f revealed that the aminomutase process occurred with
inversion of...
Response Surface Methodology (RSM) was used to study the effect
of two variables, sugar level (12-16 °Brix) and acid level (0.3-0.7
% T.A.) on sensory qualities and desirability of blackberry juice
drinks. Three blackberry juice levels (10%, 15%, and 20%) were used
to study the influence of juice flavor on...