PMID- 29723808 OWN - NLM STAT- MEDLINE DCOM- 20181001 LR - 20181001 IS - 1873-3557 (Electronic) IS - 1386-1425 (Linking) VI - 201 DP - 2018 Aug 5 TI - Determine effect of pressure heating on carbohydrate related molecular structures in association with carbohydrate metabolic profiles of cool-climate chickpeas using Globar spectroscopy. PG - 8-18 LID - S1386-1425(18)30341-X [pii] LID - 10.1016/j.saa.2018.04.036 [doi] AB - Grain has been heat-processed to alter rumen degradation characteristics and improve nutrient availabilities for ruminants. However, limited study was found on internal structure changes induced by processing on a molecular basis. The objectives of this study were to use advanced vibrational molecular spectroscopy to: (1) determine the processing induced carbohydrate (CHO) structure changes on a molecular basis, (2) investigate the effect of pressure heating on changes of CHO chemical profiles, CHO subfractions in cool-climate CDC Chickpea varieties, and (3) to reveal the association between carbohydrates related molecular spectra with carbohydrate metabolic profiles. The cool-climate CDC chickpea varieties with multisource were pressure heated in an autoclave at 120  degrees C for 60 min; and FTIR vibrational spectroscopy was used to detect the molecular spectra. Molecular spectroscopic results showed that compared to raw chickpea varieties, autoclave heating induced changes in both total CHO (region and baseline ca. 1186-946 cm(-1)) and structural CHO (STCHO, region and baseline ca. 1482-1186 cm(-1)), except for cellulosic compounds (CELC, region and baseline ca. 1374-1212 cm(-1)). The CHO chemical profile and rumen degradation results showed that autoclave heating decreased rumen degradable, undegradable and intestinal digestible sugar (CA4) content, but increased available fiber (CB3) content, without affecting available energy of chickpeas. The changes of CHO molecular spectra in chickpea varieties were strongly correlated with CHO chemical profiles, CHO subfractions, and CHO rumen degradation characteristics. Moreover, the regression analysis showed that STCHO peak 1 height could be used to predict sugar content, its rumen degradability and digestibility of chickpeas. Our results suggest that autoclave heating markedly changes sugar and fiber degradation characteristics. The carbohydrate molecular spectral profiles are associated with carbohydrate metabolic profiles in raw and pressure heated cool-climate chickpeas. CI - Copyright (c) 2018 Elsevier B.V. All rights reserved. FAU - Sun, Baoli AU - Sun B AD - College of Agriculture and Bioresources, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK, S7N5A8, Canada; College of Life Science and Engineering, Foshan University, Guangdong, China. FAU - Rahman, M Mostafizar AU - Rahman MM AD - College of Agriculture and Bioresources, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK, S7N5A8, Canada; College of Life Science and Engineering, Foshan University, Guangdong, China. FAU - Tar'an, Bunyamin AU - Tar'an B AD - College of Agriculture and Bioresources, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK, S7N5A8, Canada; College of Life Science and Engineering, Foshan University, Guangdong, China. FAU - Yu, Peiqiang AU - Yu P AD - College of Agriculture and Bioresources, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK, S7N5A8, Canada; College of Life Science and Engineering, Foshan University, Guangdong, China. Electronic address: peiqiang.yu@usask.ca. LA - eng PT - Journal Article DEP - 20180421 PL - England TA - Spectrochim Acta A Mol Biomol Spectrosc JT - Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy JID - 9602533 RN - 0 (Carbohydrates) SB - IM MH - *Animal Feed/analysis/radiation effects MH - Animals MH - *Carbohydrates/analysis/chemistry/radiation effects MH - Cicer/*chemistry MH - Climate MH - *Food Handling MH - Heating MH - Molecular Structure MH - Nutritive Value/radiation effects MH - Ruminants MH - Spectrum Analysis OTO - NOTNLM OT - Carbohydrate molecular structure OT - Cool-climate chickpeas OT - Molecular spectroscopy OT - Rumen degradation characteristics EDAT- 2018/05/04 06:00 MHDA- 2018/10/03 06:00 CRDT- 2018/05/04 06:00 PHST- 2018/02/18 00:00 [received] PHST- 2018/04/13 00:00 [revised] PHST- 2018/04/16 00:00 [accepted] PHST- 2018/05/04 06:00 [pubmed] PHST- 2018/10/03 06:00 [medline] PHST- 2018/05/04 06:00 [entrez] AID - S1386-1425(18)30341-X [pii] AID - 10.1016/j.saa.2018.04.036 [doi] PST - ppublish SO - Spectrochim Acta A Mol Biomol Spectrosc. 2018 Aug 5;201:8-18. doi: 10.1016/j.saa.2018.04.036. Epub 2018 Apr 21.