Process Optimization and Performance Analysis of Modified Zein Film by High Pressure Heat-Moisture (HPHM) Treatment

DONG Shuang; LI Xiaoyu; SANG Weicai; CHEN Ye; LI Hongjun

doi:10.13386/j.issn1002-0306.2020120059

Volume 42 Issue 16

Aug. 2021

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Science and Technology of Food Industry > 2021 > 42(16): 207-212. > DOI: 10.13386/j.issn1002-0306.2020120059

DONG Shuang, LI Xiaoyu, SANG Weicai, et al. Process Optimization and Performance Analysis of Modified Zein Film by High Pressure Heat-Moisture (HPHM) Treatment[J]. Science and Technology of Food Industry, 2021, 42(16): 207−212. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2020120059.

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Process Optimization and Performance Analysis of Modified Zein Film by High Pressure Heat-Moisture (HPHM) Treatment

1.
College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
2.
College of Food Engineering and Science, Tianjin University of Science and Technology, Tianjin 300457, China

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Received Date: December 06, 2020
Available Online: June 04, 2021

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Abstract

Abstract

In this study, zein films were modified by high pressure heat-moisture (HPHM) method and the technology of HPHM modification was optimized through single experiments and L₉(3⁴) orthogonal tests, and the properties of zein film were studied. The optimal technology was as follows: Film-formation solution volume of 9 mL, treatment temperature of 112 ℃ and treatment time of 40 min. Under the optimal technology, the water absorption rate (WAR) and transparency of modified zein film was 11.35%±0.74% and 181.30±3.29, respectively, greatly improved than raw film (P<0.05). Meanwhile, the HPHM zein film exhibited obvious improved in vitro enzymatic hydrolysis resistance (14.92%±0.58%) and tensile strength (16.51±2.13 MPa). FTIR results also showed that the β-bend of zein molecule was converted to more ordered-arranged random coli, β-sheet and α-helix after HPHM modification. This study could provide essential foundations for manufacturing high-hydrophobic protein-based films assisted by HPHM modification.
- zein,
- film,
- high pressure heat-moisture,
- functional properties,
- structure

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