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Drying technology of angiotensin converting enzyme(ACE) inhibitory peptides derived from bovine casein was investigated. No signif icance was observed on ACE inhibitory activity of products prepared by spay drying and freeze drying(P>0.05) . Spay drying was the best drying process for practical industry production. The inlet temperature ranged from 140℃ to 160℃ and the exit temperature ranged from 70℃ to 90℃ during the spay drying process. Under the optimal conditions,scale-up of angiotensin converted enzyme inhibitory peptide from 1 L to 10 L and the experiment was successively conducted. Peptide yield was 29% and half inhibitory concentration(IC50) was 0.53 g · L-1.
Drying technology of angiotensin converting enzyme (ACE) inhibitory peptides derived from bovine casein was investigated. No signif icance was observed on ACE inhibitory activity of products prepared by spay drying and freeze drying (P> 0.05). Spay drying was the best drying process for Practical industry production. The inlet temperature ranged from 140 ° C to 160 ° C and the exit temperature ranged from 70 ° C to 90 ° C during the spay drying process. Under the optimal conditions, scale-up of angiotensin converted enzyme inhibitory peptide from 1 L to 10 L and the experiment was successively conducted. Peptide yield was 29% and half inhibitory concentration (IC50) was 0.53 g · L-1.