title: Regulatory effect of porcine plasma protein hydrolysates on pasting and gelatinization action of corn starch.
abstract: The objective of this study was to investigate the regulatory effect of porcine plasma protein hydrolysates (PPPH) on the physicochemical, pasting, and gelatinization properties of corn starch (CS). The results showed that the solubility of CS markedly increased, whereas swelling power and gel penetration force decreased with increased PPPH concentration (P<0.05). Compared with native CS, PPPH significantly lowered peak viscosity, minimum viscosity, final viscosity, and total setback, whereas it increased breakdown and pasting temperature in rapid visco analyzer (RVA) measurement (P<0.05) and obviously enhanced the gelatinization temperature as determined in differential scanning calorimetry (DSC) (P<0.05). Confocal laser scanning microscopy (CLSM) showed that PPPH surrounded the starch granules at room temperature (25°C) and then formed a network with swollen starch granules during gelatinization. Atomic force microscopy (AFM) images indicated that the blocklet sizes of gelatinized CS-PPPH mixtures were smaller and more uniform than native CS. The results proved that pasting and gelatinization abilities of CS can be effectively influenced by adding PPPH.
authors.affiliation: College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Synergetic Innovation Center of Food Safety and Nutrition, Harbin, Heilongjiang 150030, China.
authors.forename: Baohua
authors.initials: B
authors.lastname: Kong
authors.affiliation: College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
authors.forename: Haili
authors.initials: H
authors.lastname: Niu
authors.affiliation: College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
authors.forename: Fangda
authors.initials: F
authors.lastname: Sun
authors.affiliation: College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
authors.forename: Jianchun
authors.initials: J
authors.lastname: Han
authors.affiliation: College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Synergetic Innovation Center of Food Safety and Nutrition, Harbin, Heilongjiang 150030, China. Electronic address: liuqian_neau@hotmail.com.
authors.forename: Qian
authors.initials: Q
authors.lastname: Liu
mesh_terms: D000818:Animals; D002152:Calorimetry, Differential Scanning; D005782:Gels / Q000737:chemistry*; D006868:Hydrolysis; D011492:Protein Hydrolysates / Q000737:chemistry*; D012995:Solubility; D013213:Starch / Q000737:chemistry*; D013499:Surface Properties; D014783:Viscosity; D003313:Zea mays / Q000737:chemistry*
chemical_list: D005782:Gels; D011492:Protein Hydrolysates; D013213:Starch
keywords: Corn starch; Pasting and gelatinization properties; Porcine plasma protein hydrolysates