Development of defatted soy flour based bio-adhesives using Viscozyme L

Chen, Nairong; Zeng, Qinzhi; Qin, Lin; Rao, Jiuping

doi:10.1016/j.indcrop.2015.04.008

Cited by 46 publications

(40 citation statements)

References 35 publications

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“…The increased acetaldehyde values of T-DSF compared with the control DSF in figure 2 indicated that some free amino groups (–NH 2 ) were released during thermal treatment, which could lead to increased cross-linking efficiency. It has been confirmed that the azetidinium group of EMPA could effectively react with primary and secondary amines in soya bean protein to form three-dimensional cross-linking networks [ 24 , 39 ], as shown in figure 8 . The corresponding tendencies of aged bond strength ( figure 7 ) and acetaldehyde value ( figure 2 ) at various treatment temperatures indicated that the improvement in water resistance was correlated to the released amino groups after thermal treatment, which further increased the cross-linking density.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, making full use of the soya bean carbohydrate component within DSF and turning it into an insoluble structure are important for further improving the water resistance of DSF-based adhesives [ 7 ]. Reports have described using Viscozyme L to hydrolyse the soya bean carbohydrate within DSF to reducing sugars, with the resultant reducing sugars then able to self-cross-link with the soya bean protein component to prepare a DSF-based adhesive with improved water resistance [ 24 ]. However, the high cost and high specificity of the enzymes have greatly hindered the commercial application of this DSF-based adhesive.…”

Section: Introductionmentioning

confidence: 99%

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Effects of thermal treatment on the properties of defatted soya bean flour and its adhesion to plywood

Zhang

Fan

et al. 2018

R. Soc. open sci.

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With an attempt to economically and efficiently improve the water resistance of defatted soya bean flour (DSF)-based wood adhesives, DSF was subjected to thermal treatment at various temperatures (65°C, 80°C, 95°C, 110°C and 125°C) for 30 min. The effects of thermal treatment temperature onto the chemical structure, crystalline degree, water-insoluble content and acetaldehyde value of the thermally treated DSF (T-DSF) were investigated. The thermal stabilities and bonding properties of soya bean adhesives prepared from T-DSF and cross-linker epichlorohydrin-modified polyamide (EMPA) were also investigated. Test results indicated that both the water-insoluble content and the acetaldehyde value of T-DSF increased after thermal treatment, reaching the highest values of 27.28% and 26.81 mg g−1, respectively. All plywood bonded with the T-DSF-based adhesive withstood a 28 h boiling–dry–boiling accelerated ageing treatment, while plywood bonded with the DSF-based adhesive delaminated after 4 h of water boiling, demonstrating the significantly improved water resistance of the T-DSF-based adhesives. Related analyses also confirmed that this improvement was due to: (i) the formation of insoluble cross-linked structures of T-DSF resulting from protein–protein self-cross-linking reactions and the protein–carbohydrate Maillard reaction and (ii) increased cross-linking efficiency between T-DSF and cross-linker EMPA owing to more T-DSF-reactive groups being released after thermal treatment.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of thermal treatment on the properties of defatted soya bean flour and its adhesion to plywood

Zhang

Fan

et al. 2018

R. Soc. open sci.

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“…In recent studies, β-glucosidase was used to improve the antioxidative activity of MF and its extracts (Ying et al 2011). MF water extracts can be bioconverted by Viscozyme L. and α-glucosidase to improve antioxidative activity (Chen et al 2015;Kim and Jang 2010). Bioactivity studies of MF have been conducted to assess the application of MF and its extracts to the treatment and prevention of diseases (Oku et al 2006;Zhang et al 2008).…”

Section: Introductionmentioning

confidence: 99%

A new high-performance liquid chromatographic method for the quality control of bioconverted Mori Folium extracts with appropriate marker compounds related to antidiabetes

Kim

et al. 2021

J Anal Sci Technol

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A HPLC method was developed to assess the enhanced bioactivity of bioconverted Mori Folium (MF) extract and to apply a quality-control system. Liquid-liquid extraction was applied to observe changes in chemical composition through enzymatic bioconversion. The ethyl acetate layer was used for quality control of the anti-diabetic functional MF product. A high-performance liquid chromatography method was developed to analyze five marker compounds (syringaldehyde, trans-caffeic acid, morin 3-O-β-D-glucopyranoside, astragalin, and moracin M 3′-O-β-glucopyranoside) within 60 min. Optimized sample preparation was sonication for 44 min and a water-to-material ratio of 102.5 mL/g by response surface methodology. Comparing MF water extract, trans-caffeic acid and syringaldehyde contents were increased 1.89 times and 2.70 times at Viscozyme-bioconverted material by applying the developed method. This HPLC method can be used to control the quality of bioconverted MF based on suitable bioactive markers and also applied to develop anti-diabetic functional foods containing Mori Folium.

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“…Further, SM‐based adhesives are considered to have the most potential for replacing petroleum‐based adhesives in future because they are abundant, environmentally safe, renewable, and degradable . Many methods have been employed to enhance the bonding performance of SM‐based adhesives, including mainly chemical denaturation in the presence of alkalis, surfactants, or organic solvents, crosslinking by crosslinkers or synthetic resins, functional group modification, enzymatic treatment, thermal treatment, ultrasound treatment, and combinations of these methods . To date, the adhesion properties, especially the water resistance of SM‐based adhesives, have been improved sufficiently to withstand hydrothermal testing (soaking in water at 63 °C and boiling water).…”

Section: Introductionmentioning

confidence: 99%

Effects of inorganic filler on performance and cost effectiveness of a soybean‐based adhesive

Chang

Sun

et al. 2019

J of Applied Polymer Sci

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A modified soybean-based adhesive with improved bonding properties and technological applicability but reduced cost was developed based on the effects of inorganic fillers on the performance of a defatted soybean meal flour (DSF) adhesive. Investigations with Fourier transform infrared spectroscopy, X-ray diffraction measurement, thermogravimetric analysis, scanning electron microscopy, rheology tests, zeta potential analysis, and plywood evaluation demonstrated that adding inorganic fillers could improve the technological applicability of the adhesive by alleviating shear thinning and decreasing the viscosity up to 71.2%, reduce the adhesive cost up to 9.5% and result in various effects on bonding properties. Two fillers, montmorillonoid and kaolin, were suitable for plywood for exterior use owing to significantly improved water resistance up to 58.9% resulting from penetration of DSF/crosslinker chains into the interlayers of the silicates via intercalation, stable chemical bonds between the fillers and crosslinker, and excellent compatibility between the filler particles and DSF adhesive.Recently, adhesives based on defatted soybean meal flour (DSF) are commonly composed of DSF and epichlorohydrin-modified polyamide (EMPA) solution (as either a crosslinker or a disperser); the two components are stored separately but mechanically blended at room temperature to formulate the adhesive immediately before use. According to the latest market costs (November, 2019) of the EMPA solution (approximately 370 USD/ton) and DSF (approximately 700 USD/ton), this DSF-based adhesive costs approximately 480 USD/ton, which is 29.7% more than adhesives containing the dominant urea-formaldehyde resin (approximately 370 USD/ton). The higher cost results in poor market competition, limiting wide application in wood composites.

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Development of defatted soy flour based bio-adhesives using Viscozyme L

Cited by 46 publications

References 35 publications

Effects of thermal treatment on the properties of defatted soya bean flour and its adhesion to plywood

Effects of thermal treatment on the properties of defatted soya bean flour and its adhesion to plywood

A new high-performance liquid chromatographic method for the quality control of bioconverted Mori Folium extracts with appropriate marker compounds related to antidiabetes

Effects of inorganic filler on performance and cost effectiveness of a soybean‐based adhesive

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