Yanrui Qiao

Works (5)

Updated: July 5th, 2023 15:59

2005 journal article

Stability of a pancreatic enzyme cocktail during in vitro protein digestibility assays

JOURNAL OF FOOD BIOCHEMISTRY, 29(2), 205–220.

By: Y. Qiao*, M. Gumpertz n & T. Van Kempen* 

TL;DR: The results indicated the optimum time for utilization of the enzymes depended on pH, enzyme concentration and presence of substrate. (via Semantic Scholar)
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Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2004 journal article

In vitro digestibility could meet quality control needs

Feedstuffs, 76(8), 11.

By: T. Van Kempen , S. Peak & Q. YanRui

Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Refining in vitro digestibility assays: Fractionation of digestible and indigestible peptides

Journal of Animal Science, 82(6), 1669–1677.

By: Y. Qiao n, X. Lin n, J. Odle n , A. Whittaker  n & T. van Kempen  n

MeSH headings : Amino Acids / metabolism; Animal Feed; Animals; Chromatography, Gel / veterinary; Dietary Proteins / metabolism; Digestion; Homoarginine / metabolism; Ileum / metabolism; In Vitro Techniques; Male; Particle Size; Random Allocation; Solubility; Swine / metabolism
TL;DR: In vitro digestibility assays should exhaustively digest proteins to mimic in vivo digestibility, and an in vitro assay based on these principles lacked precision for highly water-soluble AA, and underestimated digestibility for other AA. (via Semantic Scholar)
Sources: NC State University Libraries, Crossref, NC State University Libraries
Added: August 6, 2018

2004 journal article

Technical note: Comparison of Raman, mid, and near infrared spectroscopy for predicting the amino acid content in animal meals

Journal of Animal Science, 82(9), 2596–2600.

By: Y. Qiao n & T. Kempen n 

MeSH headings : Amino Acids / analysis; Animal Feed / analysis; Animal Feed / standards; Animals; Calibration; Predictive Value of Tests; Quality Control; Sensitivity and Specificity; Spectrophotometry, Infrared / methods; Spectrophotometry, Infrared / veterinary; Spectroscopy, Near-Infrared / methods; Spectroscopy, Near-Infrared / veterinary; Spectrum Analysis, Raman / methods
TL;DR: FTIR has the potential to yield better calibrations for AA in animal meals than NIRS, but it requires greater care in sample preparation and scanning, and Raman did not yield acceptable spectra for animal meals. (via Semantic Scholar)
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Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2002 article

Stability of pepsin (EC 3.4.23.1) during in vitro protein digestibility assay

Qiao, Y. R., Gumpertz, M., & Van Kempen, T. (2002, September). JOURNAL OF FOOD BIOCHEMISTRY, Vol. 26, pp. 355–375.

By: Y. Qiao*, M. Gumpertz* & T. Van Kempen* 

TL;DR: It was found that increase of pH and concentration of pepin increased pepsin's half-life for both specific activity decay and peptide bond hydrolysis, and the results indicated the time needed to maximize pepingin utilization depended on pH and the concentration. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

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