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1. Effect of acidolysis and oxidation on structure and properties of konjac glucomannan

Author:
Hongbo, Tang; Lan, Wang; Yanping, Li; Siqing, Dong
Source:
International journal of biological macromolecules 2019 v.130 pp. 378-387
ISSN:
0141-8130
Subject:
konjac mannan,   etc   ; acidolysis; enthalpy; hydrogen peroxide; moieties; oxidation; starch; swelling (materials); synergism; temperature; thermal properties; viscosity;     Show all 12 Subjects
Abstract:
... The modification greatly improved konjac glucomannan (KGM) characteristics and expanded its application range. For this purpose, the combination of acidolysis with oxidation was chosen to modify KGM in a heterogeneous system. In this study, we mainly discussed the effect of acidolysis and oxidation on the structure and properties of KGM. The experimental results indicated that the acidolysis and o ...
DOI:
10.1016/j.ijbiomac.2019.02.048

2. Freezing influence on physical properties of glucomannan hydrogels

Author:
Genevro, Giovana Maria; de Moraes, Mariana Agostini; Beppu, Marisa Masumi
Source:
International journal of biological macromolecules 2019 v.128 pp. 401-405
ISSN:
0141-8130
Subject:
konjac mannan,   etc   ; biocompatible materials; freezing; hydrogels; isotropy; mechanical properties; polymers; temperature; tissue engineering;     Show all 9 Subjects
Abstract:
... Freezing is an interesting technique to modify the mechanical properties and morphology of hydrogels. Konjac glucomannan (KGM) is a polysaccharide that has potential use in cutting-edge areas as biomaterials and tissue engineering. In this work, we deeply investigated the influence of freezing on KGM. For that, KGM hydrogels were frozen at several freezing rates and temperatures. Results show that ...
DOI:
10.1016/j.ijbiomac.2019.01.112

3. Partial removal of acetyl groups in konjac glucomannan significantly improved the rheological properties and texture of konjac glucomannan and κ-carrageenan blends

Author:
Hu, Yan; Tian, Jing; Zou, Jian; Yuan, Xiaoqing; Li, Jing; Liang, Hongshan; Zhan, Fuchao; Li, Bin
Source:
International journal of biological macromolecules 2019 v.123 pp. 1165-1171
ISSN:
0141-8130
Subject:
konjac mannan,   etc   ; Amorphophallus; gel strength; gelatin; hardness; kappa carrageenan; moieties; texture; viscosity;     Show all 9 Subjects
Abstract:
... The main aim of the current study was to research the effect of the degree of konjac deacetylation on the rheological and textural properties of konjac glucomannan (KGM) and κ-carrageenan blends. A series of deacetylated konjac glucomannan (Da-KGM) with different degrees of deacetylation (0, 20.35%, 35.62%, 57.19%, and 74.01%) was prepared by a heterogeneous deacetylation method. The rheological a ...
DOI:
10.1016/j.ijbiomac.2018.10.190

4. Correction to: Effect of alkali on konjac glucomannan film and its application on wound healing

Author:
Huang, Yi-Cheng; Yang, Chi-Yu; Chu, Hao-Wen; Wu, Wen-Ching; Tsai, Jenn-Shou
Source:
Cellulose 2018 v.25 no.11 pp. 6819-6821
ISSN:
0969-0239
Subject:
konjac mannan,   etc   ; calcium; cellulose; potassium hydroxide; tissue repair;     Show all 5 Subjects
Abstract:
... The paper “Effect of alkali on konjac glucomannan film and its application on wound healing” was published in Cellulose, 22(1), 737–747 (2015). As we found out that Ca(OH)₂ is a better alkali than KOH for treating the KGM film, the main purpose of this paper is to look into the effects of various concentrations of Ca(OH)₂ on the properties of KGM film as a potential wound dressing. Unfortunately, ...
DOI:
10.1007/s10570-018-2040-8

5. Self-Assembled Microporous Peptide-Polysaccharide Aerogels for Oil–Water Separation

Author:
Yang, Xin; Xie, Yanyan; Wang, Yuefei; Qi, Wei; Huang, Renliang; Su, Rongxin; He, Zhimin
Source:
Langmuir 2018 v.34 no.36 pp. 10732-10738
ISSN:
1520-5827
Subject:
konjac mannan,   etc   ; absorbents; aerogels; hydrophobicity; medicine; porosity; porous media;     Show all 7 Subjects
Abstract:
... We report a new kind of peptide-polysaccharide aerogel which was formed by the coassembly of the fluorenylmethyloxycarbonyl-diphenylalanine (Fmoc-FF) peptide and the polysaccharide konjac glucomannan (KGM). The porosity and hydrophobicity of the hybrid aerogels could be facilely tailored by modifying the mass ratio of Fmoc-FF and KGM. The aerogels with tunable architecture showed good performance ...
DOI:
10.1021/acs.langmuir.8b01723

6. Characterization of carboxymethylated konjac glucomannan for potential application in colon-targeted delivery

Author:
Wang, Lu-Hui; Huang, Guo-Qing; Xu, Tong-Cheng; Xiao, Jun-Xia
Source:
Food hydrocolloids 2019 v.94 pp. 354-362
ISSN:
0268-005X
Subject:
konjac mannan,   etc   ; beta-mannosidase; gelation; gels; hardness; hydrocolloids; molecular weight; proteinases; temperature; thermal stability; viscoelasticity; viscosity; water solubility; zeta potential;     Show all 14 Subjects
Abstract:
... Carboxymethylation is a potential way to extend the application of konjac glucomannan (KGM) in the construction of colon-targeted delivery systems through electrostatic interaction-based techniques. Hence, some related properties of carboxymethylated KGM (CMKGM) were characterized as a function of its degree of substitution (DS). Carboxymethylation decreased the molecular weight and viscoelasticit ...
DOI:
10.1016/j.foodhyd.2019.03.045

7. Konjac glucomannan-templated synthesis of three-dimensional NiO nanostructures assembled from porous NiO nanoplates for gas sensors

Author:
Son, Le Lam; Cuong, Nguyen Duc; Van Thi, Tran Thi; Hieu, Le Trung; Trung, Do Dang; Van Hieu, Nguyen
Source:
RSC advances 2019 v.9 no.17 pp. 9584-9593
ISSN:
2046-2069
Subject:
konjac mannan,   etc   ; Amorphophallus; air; ammonia; biopolymers; carbon monoxide; hydrogen; hydrogen sulfide; nanofibers; nickel; nickel oxide; nitrates; temperature;     Show all 13 Subjects
Abstract:
... Biopolymer template synthesis has attracted extensive interest for fabricating highly porous metal oxide nanostructures. In this report, a green template-based approach for the synthesis of three-dimensional (3D) NiO nanostructures assembled from porous NiO nanoplates is introduced using a konjac glucomannan (KGM) template. The Ni–KGM composites, which were formed by the immersion of KGM nanofibri ...
DOI:
10.1039/c9ra00285e

8. Complex coacervation of carboxymethyl konjac glucomannan and chitosan and coacervate characterization

Author:
Xiao, Jun-Xia; Wang, Lu-Hui; Xu, Tong-Cheng; Huang, Guo-Qing
Source:
International journal of biological macromolecules 2019 v.123 pp. 436-445
ISSN:
0141-8130
Subject:
konjac mannan,   etc   ; beta-mannosidase; biopolymers; chitosan; electrostatic interactions; gastric juice; hydrogen bonding; pH; particle size; sodium chloride; temperature;     Show all 11 Subjects
Abstract:
... Carboxymethyl konjac glucomannan (CMKGM) shows potential in the construction of colon-targeted delivery systems through electrostatic interaction-based techniques. Its coacervation with chitosan (CHI) was investigated as a function of degree of substitution (DS). CMKGMs displayed the same optimum coacervation conditions of pH 6.5 and mass ratio 1:1 with CHI, but the coacervate yield was positively ...
DOI:
10.1016/j.ijbiomac.2018.11.086

9. Effect of various hydrocolloids on the physical and fermentation properties of dough

Author:
Li, Jinxin; Zhu, Yunping; Yadav, Madhav P.; Li, Jinlong
Source:
Food chemistry 2019 v.271 pp. 165-173
ISSN:
0308-8146
Subject:
konjac mannan,   etc   ; chemical bonding; dough; dough quality; fermentation; gluten; guar gum; hydrocolloids; locust bean gum; pasting properties; pectins; viscosity;     Show all 12 Subjects
Abstract:
... Sixteen hydrocolloids (12 carbohydrate-origin and 4 protein-origin hydrocolloids) at several concentrations were added to dough and their rheological, pasting and fermentation properties were studied. We found that 0.2–1% guar gum (GG) and locust bean gum (LBG) resulted in more strengthened doughs. But 0.2–1% pectin and konjac glucomannan (KGM) yielded weaker dough. The chemical interactions study ...
Handle:
10113/6119706
DOI:
10.1016/j.foodchem.2018.07.192

10. Spray-drying of konjac glucomannan to produce microparticles for an application as antitubercular drug carriers

Author:
Guerreiro, Filipa; Pontes, Jorge F.; Rosa da Costa, Ana M.; Grenha, Ana
Source:
Powder technology 2019 v.342 pp. 246-252
ISSN:
0032-5910
Subject:
konjac mannan,   etc   ; antibiotics; breathing; cell viability; drug carriers; drugs; isoniazid; leucine; lungs; mannitol; microparticles; powders; spray drying; toxicity; tuberculosis;     Show all 15 Subjects
Abstract:
... Spray-drying is proposed in this work as the technique to produce konjac glucomannan microparticles aimed at an application in lung tuberculosis therapy. Microparticles were developed to provide direct lung delivery of an association of two first-line antitubercular drugs, isoniazid and rifabutin, by inhalation. Mannitol or leucine were incorporated as spray-drying excipients to verify their effec ...
DOI:
10.1016/j.powtec.2018.09.068

11. Effects of high pressure processing on gelation properties and molecular forces of myosin containing deacetylated konjac glucomannan

Author:
Li, Zhiyu; Wang, Jianyi; Zheng, Baodong; Guo, Zebin
Source:
Food chemistry 2019 v.291 pp. 117-125
ISSN:
0308-8146
Subject:
konjac mannan,   etc   ; bream; electrostatic interactions; gel strength; gelation; gels; high pressure treatment; hydrogen bonding; hydrophobic bonding; microstructure; myosin; scanning electron microscopy; storage modulus;     Show all 13 Subjects
Abstract:
... This study investigated the gelation properties of composite gels prepared with golden threadfin bream myosin and 2% (w/v) deacetylated konjac glucomannan under different high pressure processing (HPP). Deacetylated konjac glucomannan increased the immobilized water and increased the gel strength of myosin gel, which were further increased under moderate pressure level (0.1–300 MPa) but decreased ...
DOI:
10.1016/j.foodchem.2019.03.146

12. Interaction between konjac glucomannan and tannic acid: Effect of molecular weight, pH and temperature

Author:
He, Yun; Wang, Shishuai; Li, Jing; Liang, Hongshan; Wei, Xianlin; Peng, Dengfeng; Jiang, Zhengqiang; Li, Bin
Source:
Food hydrocolloids 2019 v.94 pp. 451-458
ISSN:
0268-005X
Subject:
konjac mannan,   etc   ; calorimetry; hydrocolloids; hydrogen bonding; light scattering; molecular weight; pH; tannins; temperature; titration; transmission electron microscopy; turbidity; ultrasonic treatment; urea;     Show all 14 Subjects
Abstract:
... The objective of this study was to investigate the interaction between tannic acid (TA) and konjac glucomannan (KGM) with different molecular weight at different pHs,temperatures and urea concentration. The different molecular weight of KGM without change in primary structure were obtained by ultrasonic treatment. Turbidity titration showed that TA/KGM complexes could form at lower pH. The dynamic ...
DOI:
10.1016/j.foodhyd.2019.03.044

13. Okra polysaccharide: Effect on the texture and microstructure of set yoghurt as a new natural stabilizer

Author:
Xu, Kang; Guo, Mengmeng; Du, Jinhua; Zhang, Zhihai
Source:
International journal of biological macromolecules 2019 v.133 pp. 117-126
ISSN:
0141-8130
Subject:
konjac mannan,   etc   ; apples; firmness; gelation; gels; microscopy; microstructure; modulus of elasticity; okra; pectins; sodium alginate; stabilizers; texture; viscosity; water holding capacity; yogurt;     Show all 16 Subjects
Abstract:
... Four plant-derived polysaccharides including okra polysaccharide (OP), apple pectin (AP), sodium alginate (SA) and konjac glucomannan (KGM) were studied in yoghurt formulation to investigate their effect on gelling characteristics. The results indicated that OP, KGM and AP enhanced the water-holding capacity, firmness and elasticity of yoghurt while SA demonstrated the opposite effects. Gel struct ...
DOI:
10.1016/j.ijbiomac.2019.04.035

14. Physicochemical properties of degraded konjac glucomannan prepared by laser assisted with hydrogen peroxide

Author:
Lin, Wanmei; Ni, Yongsheng; Wang, Lin; Liu, Dengyi; Wu, Chunhua; Pang, Jie
Source:
International journal of biological macromolecules 2019 v.129 pp. 78-83
ISSN:
0141-8130
Subject:
konjac mannan,   etc   ; 2,2-diphenyl-1-picrylhydrazyl; Fourier transform infrared spectroscopy; antioxidant activity; differential scanning calorimetry; hydrogen peroxide; irradiation; molecular weight; rheology; thermal stability; viscosity;     Show all 11 Subjects
Abstract:
... The exploration of methods for degrading konjac glucomannan (KGM) is of great significant and technological interest. Here, laser at the power of 10 W was employed to degrade KGM. The laser degraded konjac glucomannan (LDK) was analyzed by viscosity, Rheology, Differential scanning calorimetry (DSC), Fourier transform infrared (FT-IR) spectroscopy and laser light scatter (LLS). The viscosity of th ...
DOI:
10.1016/j.ijbiomac.2019.02.035

15. Effect of different hydrocolloids on gluten proteins, starch and dough microstructure

Author:
Li, Jinxin; Yadav, Madhav P.; Li, Jinlong
Source:
Journal of cereal science 2019 v.87 pp. 85-90
ISSN:
0733-5210
Subject:
konjac mannan,   etc   ; crosslinking; dough; electrostatic interactions; gelatinization; gluten; guar gum; hydrocolloids; hydrogen bonding; lambda-carrageenan; microstructure; pectins; physicochemical properties; protein structure; retrogradation; starch; thermal properties;     Show all 17 Subjects
Abstract:
... The possible interaction of six hydrocolloids with gluten proteins and starch has been investigated. It has been found that λ-carrageenan, high methoxyl orange pectin, guar gum and konjac glucomannan could form complexes with gluten proteins and induce more disordered but less crosslinked protein structures through electrostatic interactions and hydrogen bonding. In general, the effect of hydrocol ...
DOI:
10.1016/j.jcs.2019.03.004

16. Fabrication of Konjac glucomannan-based composite hydrogel crosslinked by calcium hydroxide for promising lacrimal plugging purpose

Author:
Xu, Ningxia; Yang, Hua; Wei, Rong; Pan, Shiyin; Huang, Saipeng; Xiao, Xianghua; Wen, Huiyun; Xue, Weiming
Source:
International journal of biological macromolecules 2019 v.127 pp. 440-449
ISSN:
0141-8130
Subject:
konjac mannan,   etc   ; Amorphophallus; animal models; calcium hydroxide; crosslinking; dry eye syndrome; eyes; humans; hydrogels; polyvinyl alcohol; rabbits; sodium alginate; strength (mechanics); temperature;     Show all 14 Subjects
Abstract:
... Swelling, mechanical strength, flexibility, and toughness are important parameters in hydrogel preparation for application in the human body. Herein, composite hydrogels were prepared using a mix of Konjac glucomannan (KGM), sodium alginate (SA), and polyvinyl alcohol (PVA) cross-linked by calcium hydroxide. The PVA/KGM/SA composite hydrogel showed a suitable swelling ratio and rate, as well as el ...
DOI:
10.1016/j.ijbiomac.2019.01.069

17. Effects of konjac glucomannan on pasting and rheological properties of corn starch

Author:
Ma, Shuping; Zhu, Peilei; Wang, Mingchun
Source:
Food hydrocolloids 2019 v.89 pp. 234-240
ISSN:
0268-005X
Subject:
konjac mannan,   etc   ; corn starch; food additives; gelation; hydrocolloids; loss modulus; magnetism; nuclear magnetic resonance spectroscopy; particle size distribution; pasting properties; starch; storage modulus; temperature; viscoelasticity;     Show all 14 Subjects
Abstract:
... Blend of starch and hydrocolloids is a secure and feasible physical modifying method for native starch. Konjac glucomannan (KGM), a kind of non-ionic hydrocolloids, has been widely used as food additive due to its water holding, thickening and gelling capacity. In this study, the effect of Konjac glucomannan (KGM) on the pasting and rheological properties of corn starch (CS) was investigated. The ...
DOI:
10.1016/j.foodhyd.2018.10.045

18. Effects of pre-emulsification by three food-grade emulsifiers on the properties of emulsified surimi sausage

Author:
Liu, Xiangyu; Ji, Lei; Zhang, Tao; Xue, Yong; Xue, Changhu
Source:
Journal of food engineering 2019 v.247 pp. 30-37
ISSN:
0260-8774
Subject:
konjac mannan,   etc   ; adhesion; droplets; emulsifiers; emulsifying; hardness; light microscopy; myosin; particle size; peanut oil; phosphates; rheology; sausages; soy protein isolate; surimi; texture; water holding capacity;     Show all 17 Subjects
Abstract:
... In this study, we investigated the effects of peanut oil pre-emulsification by three food-grade emulsifiers (soy protein isolate (SPI), konjac glucomannan (KGM), and acetylated distarch phosphate (ADSP)) on the properties of emulsified surimi sausage. TPA tests showed that KGM comprehensively improved sausage texture. SPI reduced the emulsified sausage hardness from 131.37 ± 3.12 N to 111.13 ± 1.2 ...
DOI:
10.1016/j.jfoodeng.2018.11.018

19. Transparent konjac glucomannan/cellulose nanofibril composite films with improved mechanical properties and thermal stability

Author:
Wang, Jinyu; Chen, Xin; Zhang, Chenggang; Akbar, Abdul Rehman; Shi, Zhuqun; Yang, Quanling; Xiong, Chuanxi
Source:
Cellulose 2019 v.26 no.5 pp. 3155-3165
ISSN:
0969-0239
Subject:
konjac mannan,   etc   ; biodegradability; biomass; cellulose; cellulose nanofibers; composite films; hydrogen bonding; modulus of elasticity; nanocomposites; packaging materials; tensile strength; thermal stability;     Show all 12 Subjects
Abstract:
... Development of renewable, biodegradable and biocompatible high-performance biomass materials is in great demand for the creation of a low-carbon society. Here, a series of konjac glucomannan (KGM) nanocomposite films reinforced by 2, 2, 6, 6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibrils (TOCNs) were fabricated from aqueous system by casting pathway. The composites exhibited n ...
DOI:
10.1007/s10570-019-02302-6

20. Novel hard capsule prepared by tilapia (Oreochromis niloticus) scale gelatin and konjac glucomannan: Characterization, and in vitro dissolution

Author:
Liu, Yaru; Li, Bafang; Zhang, Kai; Li, Jiawei; Hou, Hu
Source:
Carbohydrate polymers 2019 v.206 pp. 254-261
ISSN:
0144-8617
Subject:
konjac mannan,   etc   ; Fourier transform infrared spectroscopy; Oreochromis niloticus; X-ray diffraction; composite materials; contact angle; drugs; gel strength; gelatin; hydrophilicity; melting point; rheological properties; tensile strength;     Show all 13 Subjects
Abstract:
... A novel material for making capsules was prepared with tilapia scale gelatin and konjac glucomannan (KGM). Rheological behaviors of gelatin with KGM at different levels (0.1%, 0.15%, and 0.2%, w/w) were investigated. The highest values (P < 0.05) of gel strength (518.33 ± 6.17 g) and melting temperature (39.7 ± 0.11 °C) could be observed at the gelatin solution with 0.15% (w/w) KGM. The tensile st ...
DOI:
10.1016/j.carbpol.2018.10.104