Chemical and physical characterization of Konjac glucomannan-based powders by FTIR and 13C MAS NMR

被引：39

作者：

da Silva, Denise Felix ^{[1
]}

Langer Ogawa, Camilla Yara ^{[2
]}

Sato, Francielle ^{[2
]}

Neto, Antonio Medina ^{[2
]}

Larsen, Flemming Hofmann ^{[3
]}

Matumoto-Pintro, Paula Toshimi ^{[1
]}

机构：

[1] Univ Estadual Maringa, Dept Agron, Av Colombo 5790, BR-87020900 Maringa, PR, Brazil

[2] Univ Estadual Maringa, Dept Phys, Av Colombo 5790, BR-87020900 Maringa, PR, Brazil

[3] Univ Copenhagen, Dept Food Sci, Fac Sci, Rolighedsvej 26, DK-1958 Frederiksberg C, Denmark

来源：

POWDER TECHNOLOGY | 2020年 / 361卷

关键词：

Glucomannan; Amorphophallus konjac; Konjac flour; NMR; FTIR; DIETARY FIBER; FLOUR; PROFILE;

D O I：

10.1016/j.powtec.2019.11.071

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Konjac glucomannan (KGM) is extracted from Amorphophallus konjac tuber and composed of beta-1,4 linked D-mannose and D-glucose. We aimed to produce and characterize KGM-based powders manufactured from dried (55 degrees C-KF55 and 75 degrees C-KF75) konjac tubers and compare to a commercial konjac glucomannan (CKG) powder. Structural characteristics on molecular, compositional, and microstructure levels as well as rehydration properties were assessed. Both compositional analysis as well as FTIR and 13C MAS NMR spectral analysis demonstrated a higher amount of protein than KF55 sample. The ratio between the two monomer units (D-mannose and D-glucose) was 1.6:1 in KF75, whereas it was 1.4:1 and 1.2:1 for KF55 and CKG, respectively, indicating slightly higher Man:Glc ratios in the KF samples. Decreased rehydration properties and flow index behavior (in solution) were observed in the konjac flours. Thus, differences were significant; konjac flours also presented good functionality, thereby, a good alternative to be used as hydrocolloid in food formulations. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：610 / 616

页数：7

共 32 条

[11] Indigestible fraction of okara from soybean: composition, physicochemical properties and in vitro fermentability by pure cultures of Lactobacillus acidophilus and Bifidobacterium bifidum [J].

Espinosa-Martos, Irene ;

Ruperez, Pilar .

EUROPEAN FOOD RESEARCH AND TECHNOLOGY, 2009, 228 (05) :685-693

[12] C-13 NMR characterization of molecular structures in powders, hydrates and gels of galactomannans and glucomannans [J].

Gidley, M. J. ;

McArthur, A. J. ;

Underwood, D. R. .

FOOD HYDROCOLLOIDS, 1991, 5 (1-2) :129-140

[13] Rheological properties of natural low-methoxyl pectin extracted from sunflower head [J].

Hua, Xiao ;

Wang, Kun ;

Yang, Ruijin ;

Kang, Jiaqi ;

Zhang, Jianing .

FOOD HYDROCOLLOIDS, 2015, 44 :122-128

[14] Characters of rice starch gel modified by gellan, carrageenan, and glucomannan: A texture profile analysis study [J].

Huang, Min ;

Kennedy, J. F. ;

Li, B. ;

Xu, Xiao ;

Xie, B. J. .

CARBOHYDRATE POLYMERS, 2007, 69 (03) :411-418

[15] Comparative studies of konjac flours extracted from Amorphophallus guripingensis and Amorphophallus rivirei: Based on chemical analysis and rheology [J].

Huang, Qing ;

Jin, Weiping ;

Ye, Shuxin ;

Hu, Ying ;

Wang, Yuntao ;

Xu, Wei ;

Li, Jing ;

Li, Bin .

FOOD HYDROCOLLOIDS, 2016, 57 :209-216

[16] Synergistic degradation of konjac glucomannan by alkaline and thermal method [J].

Jin, Weiping ;

Mei, Ting ;

Wang, Yuntao ;

Xu, Wei ;

Li, Jing ;

Zhou, Bin ;

Li, Bin .

CARBOHYDRATE POLYMERS, 2014, 99 :270-277

[17] Exothermic events on heating of semi-dilute konjac glucomannan-water systems [J].

Karim, AA ;

Chang, YP ;

Norziah, MH ;

Ariffin, F ;

Nadiha, MZ ;

Seow, CC .

CARBOHYDRATE POLYMERS, 2005, 61 (03) :368-373

[18] Evaluating the role of cell wall material and soluble protein in the functionality of cowpea (Vigna unguiculata) pastes [J].

Kethireddipalli, P ;

Hung, YC ;

Phillips, RD ;

McWatters, KH .

JOURNAL OF FOOD SCIENCE, 2002, 67 (01) :53-59

[19] Synthesis of acetylated konjac glucomannan and effect of degree of acetylation on water absorbency [J].

Koroskenyi, B ;

McCarthy, SP .

BIOMACROMOLECULES, 2001, 2 (03) :824-826

[20] RAMPED-AMPLITUDE CROSS-POLARIZATION IN MAGIC-ANGLE-SPINNING NMR [J].

METZ, G ;

WU, XL ;

SMITH, SO .

JOURNAL OF MAGNETIC RESONANCE SERIES A, 1994, 110 (02) :219-227

← 1 2 3 4 →