PMID- 28343395 OWN - NLM STAT- MEDLINE DCOM- 20170622 LR - 20170622 IS - 1520-5118 (Electronic) IS - 0021-8561 (Linking) VI - 65 IP - 20 DP - 2017 May 24 TI - Investigation of the Spectroscopic Information on Functional Groups Related to Carbohydrates in Different Morphological Fractions of Corn Stover and Their Relationship to Nutrient Supply and Biodegradation Characteristics. PG - 4035-4043 LID - 10.1021/acs.jafc.7b00231 [doi] AB - The objectives of this study were to investigate (1) nutritive values and biodegradation characteristics and (2) mid-IR spectroscopic features within the regions associated with carbohydrate functional groups (including cellulosic component (CELC), structural carbohydrate (STCHO), and total carbohydrate (CHO)) in different morphological fractions of corn stover. Furthermore, correlation and regression analyses were also applied to determine the relationship between nutritional values and spectroscopic parameters. The results showed that different morphological sections of corn stover had different nutrient supplies, in situ biodegradation characteristics, and spectral structural features within carbohydrate regions. The stem rind and ear husk were both high in fibrous content, which led to the lowest effective degradabilities (ED) among these stalk fractions. The ED values of NDF were ranked ear husk > stem pith > leaf blade > leaf sheath > whole plant > stem rind. Intensities of peak height and area within carbohydrate regions were relatively more stable compared with spectral ratio profiles. Significant difference was found only in peak area intensity of CELC, which was at the highest level for stem rind, followed by stem pith, leaf sheath, whole plant, leaf blade, and ear husk. Correlation results showed that changes in some carbohydrate spectral ratios were highly associated with carbohydrate chemical profiles and in situ rumen degradation kinetics. Among the various carbohydrate molecular spectral parameters that were tested in multiple regression analysis, CHO height ratios, and area ratios of CELC:CHO and CELC:STCHO as well as CELC area were mostly sensitive to nutrient supply and biodegradation characteristics in different morphological fractions of corn stover. FAU - Xin, Hangshu AU - Xin H AUID- ORCID: 0000-0003-4180-2272 AD - College of Animal Science and Technology, Northeast Agricultural University , Harbin 150030, China. FAU - Ding, Xue AU - Ding X AD - College of Animal Science and Technology, Northeast Agricultural University , Harbin 150030, China. AD - Gushi Agriculture & Animal Husbandry Group Company, Ltd. , Harbin 150078, China. FAU - Zhang, Liyang AU - Zhang L AD - College of Animal Science and Technology, Northeast Agricultural University , Harbin 150030, China. FAU - Sun, Fang AU - Sun F AD - Institute of Animal Husbandry of Heilongjiang Academy of Agricultural Sciences , Harbin 150086, China. FAU - Wang, Xiaofan AU - Wang X AD - College of Animal Science and Technology, Northeast Agricultural University , Harbin 150030, China. FAU - Zhang, Yonggen AU - Zhang Y AD - College of Animal Science and Technology, Northeast Agricultural University , Harbin 150030, China. LA - eng PT - Journal Article DEP - 20170512 PL - United States TA - J Agric Food Chem JT - Journal of agricultural and food chemistry JID - 0374755 RN - 0 (Carbohydrates) RN - 0 (Dietary Carbohydrates) SB - IM MH - Animal Feed/analysis MH - Biodegradation, Environmental MH - Carbohydrates/*analysis MH - Dietary Carbohydrates/analysis MH - Nutritive Value MH - Plant Leaves/chemistry/growth & development MH - Spectrum Analysis MH - Zea mays/*chemistry/growth & development OTO - NOTNLM OT - carbohydrate OT - corn stover OT - molecular structural OT - morphological fractions OT - nutritive values OT - relationship EDAT- 2017/03/28 06:00 MHDA- 2017/06/24 06:00 CRDT- 2017/03/28 06:00 PHST- 2017/03/28 06:00 [pubmed] PHST- 2017/06/24 06:00 [medline] PHST- 2017/03/28 06:00 [entrez] AID - 10.1021/acs.jafc.7b00231 [doi] PST - ppublish SO - J Agric Food Chem. 2017 May 24;65(20):4035-4043. doi: 10.1021/acs.jafc.7b00231. Epub 2017 May 12.