Retrogradation of gelatinized starch is a well-known phenomenon causing quality deterioration of starch-containing foods during storage. The objective of this work was to study physical phenomena underlying the reduced retrogradation of gelatinized rice starch (GRS) by anti-listerial grass carp protein hydrolysate (AGCPH) during short-term and long-term storage. The AGCPH was produced from grass carp protein using neutrase to a hydrolysis degree of 19% that was previously shown to have strong anti-listerial properties. Rheological results showed that a greater amount of AGCPH significantly reduced the storage modulus to a greater extent during heating from 25 to 95 °C at 5 °C/min, cooling from 95 to 25 °C at 5 °C/min, and the subsequent holding at 25 °C for 180 min, indicating the short-term suppression of GRS retrogradation by AGCPH. During the 14-day storage at 4 °C, the addition of AGCPH significantly reduced the hardness of pastes from 878.9 to 350.6 g, and the percentage of retrogradation was decreased from 82.2% to 21.7% according to differential scanning calorimetry, while the recrystallization of GRS based on X-ray diffraction spectroscopy was reduced from 13.4% to 6.9% when the GRS:AGCPH mass ratio decreased from 100:0 to 88:12. In addition, confocal laser scanning microscopy and atomic force microscopy showed that AGCPH bound with GRS starch molecules to block the formation of hydrogen bonds to impact intra- and inter-particle interactions and inhibit the recrystallization of GRS. The findings suggest that AGCPH may be used to significantly inhibit the short-term and long-term retrogradation of GRS to improve the safety and quality of refrigerated paste products.
Food Hydrocolloids – Elsevier
Published: Nov 1, 2017
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera