Research on Biological Materials with Optimization of Spray Drying Walnut Antioxidant Polypeptide Using Response Surface Methodology

Yan Ma; Shuai Wu; Chu Yu Guan; Guo Hui Huang

doi:10.4028/www.scientific.net/AMM.540.326

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 540Research on Biological Materials with Optimization...

Research on Biological Materials with Optimization of Spray Drying Walnut Antioxidant Polypeptide Using Response Surface Methodology

Abstract:

Response surface methodology (RSM) was employed to optimize the spray drying process for walnut polypeptide, which were hydrolyzed by papain and trypsin. Air inlet temperature, air outlet temperature and feed concentration as well as cross-interaction among these factors exhibited a significant effect on collection rate and DPPH scavenging activity of walnut polypeptide powder. Results showed that the optimal drying parameters were air inlet temperature of 172℃, air outlet temperature of 88℃ and feed concentration of 23 %. The observed collection rate and DPPH scavenging activity of polypeptide powder under the optimal conditions was up to 91.28 % and 76.33 %, respectively, which was consistent with the predicted result.

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Periodical:

Applied Mechanics and Materials (Volume 540)

Pages:

326-330

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.540.326

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Online since:

April 2014

Authors:

Yan Ma, Shuai Wu, Chu Yu Guan, Guo Hui Huang*

Keywords:

Collection Rate, DPPH Scavenging Activity, Spray Drying, Walnut Polypeptide

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