Multipoint near-infrared spectrometry for real-time monitoring of protein conformational stability in powdered infant formula.

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 Nutr

authors

Pabari RM,Togashi D,Cama-Moncunill R,El Arnaout T,Rifai H,Cruise P,Cullen PJ,Sullivan C

doi

10.3109/09637486.2015.1064867

subject

Has Abstract

pub_date

2015-01-01 00:00:00

pages

526-32

issue

5

eissn

0963-7486

issn

1465-3478

journal_volume

66

pub_type

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