Determination of optimum condition of leucine content in beef protein hydrolysate using response surface methodology; [Penentuan keadaan optimum bagi kandungan leusina di dalam protein hidrolisat daging menggunakan kaedah gerak balas permukaan]

• Published in: Malaysian Journal of Analytical Sciences
• Main Author: Mutalib S.R.A.; Samicho Z.; Abdullah N.
• Format: Article
• Language: English
• Published: Malaysian Society of Analytical Sciences 2016
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84982275894&doi=10.17576%2fmjas-2016-2004-16&partnerID=40&md5=92ee00568e2d6162bce9b70abfdc3397

The aim of this study is to determine the optimum condition of leucine content in beef hydrolysate. Beef hydrolysate was prepared by enzymatic hydrolysis using bromelain enzyme produced from pineapple peel. Parameter conditions such as concentration of bromelain, hydrolysis temperature and hydrolysis time were assessed to obtain the optimum leucine content of beef hydrolysate according to experimental design which was recommended by response surface methodology (RSM). Leucine content in beef hydrolysate was determined using AccQ.Tag amino acid analysis method using high performance liquid chromatography (HPLC). The condition of optimum leucine content was at bromelain concentration of 1.38 %, hydrolysis temperature of 42.5 °C and hydrolysis time of 31.59 hours with the predicted leucine content of 26.57 %. The optimum condition was verified with the leucine value obtained was 26.25 %. Since there was no significant difference (p > 0.05) between the predicted and verified leucine values, thus it indicates that the predicted optimum condition by RSM can be accepted to predict the optimum leucine content in beef hydrolysate. © 2016, Malaysian Society of Analytical Sciences. All rights reserved.