Regulatory effect of porcine plasma protein hydrolysates on pasting and gelatinization action of corn starch.
Int J Biol Macromol
; 82: 637-44, 2016 Jan.
Article
in En
| MEDLINE
| ID: mdl-26467491
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.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Protein Hydrolysates
/
Starch
/
Zea mays
/
Gels
Limits:
Animals
Language:
En
Journal:
Int J Biol Macromol
Year:
2016
Document type:
Article
Affiliation country:
China