Abstract:
:Powdered infant formula (PIF) can be the sole source of nutrition for babies and infants. Monitoring conformational changes in protein during manufacture of PIF is critical in order to maintain its nutritional value. This study presents the development of a calibration model for monitoring conformational changes in PIF protein by applying a novel multipoint near-infrared (NIR) spectrometry. NIR spectra were collected for PIF and PIF proteins, casein and whey protein isolate, before and after heat treatment. Results show that principal component analysis showed discrimination between native protein at room temperature and protein conformational changes caused at elevated temperature. Partial least squares regression analysis showed good calibration models with correlation coefficients ranging between 87% and 99% for the prediction of protein quality. This novel multipoint NIR spectrometry could serve as a simple in-line tool to rapidly monitor protein quality during processing stages, contributing to product nutritional value.
journal_name
Int J Food Sci Nutrjournal_title
International journal of food sciences and nutritionauthors
Pabari RM,Togashi D,Cama-Moncunill R,El Arnaout T,Rifai H,Cruise P,Cullen PJ,Sullivan Cdoi
10.3109/09637486.2015.1064867subject
Has Abstractpub_date
2015-01-01 00:00:00pages
526-32issue
5eissn
0963-7486issn
1465-3478journal_volume
66pub_type
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