INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Ruxia Ning,Xichuang Cheng,Fuhou Lei,Jiufang Duan,Kun Wang,Jianxin Jiang
Natural and high-quality biomass-based coating films are considered promising packaging to consumers. However, the poor mechanical properties and weak antimicrobial activity of biomass materials have limited their practical application. A cleaner and low-cost strategy is used to prepare antimicrobial, self-recovery, and biocompatible coating films using tamarind kernel powder (TKP) and chitosan (CS). The TKP protein and chitosan chains were covalently cross-linked with tetrakis(hydroxymethyl)phosphonium chloride (THPC) to form a three-dimensional network based on THPC-amine dynamic bonds, and act as a sacrificial bond. Then, the hydrogen bond forms an interpenetrating network to build a strong multi-network film. Thus, the THPC multi-crosslinking TKP based films showed enhanced stretchable property (increased from 3.23 % to 77.54 %), and self-recovery after 30 min of recovery. Additionally, the film has been found to exhibit low water vapor permeability, low oxygen transmittance rate, and excellent antimicrobial efficiency (maximum inhibition zones: 24.39 mm). Moreover, the prepared films were demonstrated to be biocompatible and non-hemolytic based on cell viability and hemolytic activity assays. The method described herein could broaden the scope of biomass-based materials in the realm of antimicrobial coating films.
研究领域:
高分子材料科学
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食品包装工程
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生物医学材料
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天然高分子化学
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抗菌材料
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可再生资源利用
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FOOD RESEARCH INTERNATIONAL
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2026
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IF 8
Xiangqi Zhou,Qin Zhang,Yan Zhang,Tian Lan,Jing Wang,Xiaonan Sui
This research aimed to study the enhancement of the mannose/galactose (M/G) ratio of galactomannan (GM) on the rheological properties and structure of heat-induced gels of soy protein isolate (SPI) under neutral pH conditions. The rheological results showed that the addition of GMs reduced the initial gelation temperature (T gel ) of SPI gels by up to 30.59% (SPI-LBG). Multidimensional rheology revealed that gel properties of SPI gels were significantly enhanced, exhibiting a positive correlation with the M/G ratio of added GM. Based on scanning electron microscopy images, the incorporation of GM promotes the formation of a compact layered microstructure in SPI gels, thereby enhancing yield stress, thixotropy, and structural recovery capacity (LBG > TG > GG > FG). This work provides an analytical framework for protein-polysaccharide gels and a practical strategy for utilizing galactomannans to improve traditional heat-induced protein gel-based foods under neutral conditions.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2026
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IF 6.7
Fang Ruiqi,Chen JiaJia,Xu Yan,Yan Lishi,Ju Xin,Li Liangzhi
Biomass polysaccharides are explored
as inexpensive raw materials
for preparing value-added products, such as mannan oligosaccharides
(MOS). However, the varied composition of MOS and the underlying mechanism
have not been studied thoroughly yet. Here a β-mannanase from Paenibacillus sp. was engineered for hydrolyzing
biomass polysaccharides and producing prebiotic MOS. Structural analysis
and alanine scanning revealed two hot spots, Q66 and T88, in the carbohydrate
binding module (CBM). The mutant T88Y demonstrated a 65% activity
improvement and a 5-fold thermal stability enhancement at 70 ° C,
and Q66F produced 2.2 g/L of mannobiose and mannotriose from locust
bean gum, with a 46% activity increase. Moreover, Q66F generated a
2.0 molar ratio of mannobiose/mannotriose, and a reverse ratio of
0.4 was found in Q66R. The application of Q66R was further validated
in the fermentation of citrus peel waste. The results provided efficient
biocatalysts for producing prebiotic MOS from biomass polysaccharides
and deeper comprehension of altering product chain length of β-mannanases
from CBM.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
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IF 15.7
Ma Ruiyu,Jia Lichuan,Guo Zhiguang,Lin Jie,Liu Mengxin,Wang Zhixing,Song Guilin,Yan Dingxiang,Li Zhongming
Producing high-concentration liquid metal (LM) inks is highly desirable for next-generation flexible electronics, and yet remains a dulling challenging due to the large surface tension and high density of LM droplets. Herein, a general finite-gel strategy is proposed to enable the fabrication of high-concentration liquid metal (LM) inks. In the LM-based inks, the LM droplets are confined in the relaxed finite-gel networks, which provide strong repulsive effects to avoid the reunition of the adjacent LM droplets. The unique structure imparts the LM-based inks with a good colloidal stability even at a very high LM concentration of 30,000.0 g/L. The LM-based inks also present tunable rheological behavior and are suitable for various processing technologies. Moreover, the proposed finite-gel strategy is scalable, and could be expanded to various cryogel systems (e.g., curdlan, gelatin, and gellan gum). This work takes a crucial step forward to producing highly concentrated LM-based inks for flexible electronics.
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FOOD HYDROCOLLOIDS
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2026
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IF 13.8
Xin Jiang,Qianqian Liang,Zhengpeng Wei,Shiqiang Yin,Jinmei Wang,Yanjun Duan,Wenzheng Shi
The role of polysaccharides toward controlling the release of off-flavors in silver carp surimi gels and the textural characteristics was investigated. Results showed that the addition of sodium octenyl succinate starch (SSOS), acetylated distarch phosphate (ADSP), agar (AG), β-cyclodextrin (CD), gellan gum (GG), and konjac glucomannan (KGM) from 18 polysaccharides reduced the release of fishy smell, which was considered the most unpleasant and predominant odor in surimi gels. Based on the results of HS-GC-IMS and HS-SPME-GC-MS, gels AG, CD, and KGM showed more efficient adsorption capacity for volatile flavor compounds including hexanal, heptanal, nonanal, decanal, and 1-octen-3-ol. Among these, the hardness in gels AG, GG, and KGM increased, while deformation and gel strength decreased, resulting in a reduction in smoothness of the microstructure. The whiteness of the gels SSOS and CD were maintained, but the hardness of SSOS, ADSP, and CD decreased. Correlation studies indicated that the adsorption capacity of polysaccharides on volatile flavor compounds exhibited a negative correlation with hardness, chewiness, and water holding capacity, as well as a ∗ and b ∗ values. This comprehensive research provided new insights for selecting polysaccharides intended for flavor regulation in surimi products.
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Polymers
·
2022
·Vol. 14
·期 4
·731
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IF 4.967
Hao Cheng,Jie Cao,Wenru Liu,Jun Mei,Jing Xie
In this study, we characterized an active film made of sodium alginate (SA)—locust bean gum (LBG) containing daphnetin-based film. Physicochemical characteristics, as well as antioxidant and antibacterial properties, were investigated. The results showed that the addition of a low concentration of daphnetin increased the flexibility of SA–LBG cling film, leading to an improvement in elongation at break and tensile strength. As the daphnetin content increased, solubility, brightness and transparency of the cling film decreased, and the moisture permeability increased. The antioxidant capacity and antibacterial activity of films with daphnetin were improved compared to those of the basal film. In addition, the cling film formed by adsorption had higher bacterial (Shewanella putrefaciensandPseudomonas fluorescens) inhibition and antioxidant activity rates than direct film formation. The results indicate that the combination of daphnetin in SA–LBG film provides an active film with antioxidant and antibacterial properties, with potential for the development of food-grade packaging material.Keywords:active film;physicochemical characteristics;daphnetin;scanning electron microscopy;antimicrobial activity
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Food Packaging and Shelf Life
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2022
·
IF 8.749
Jingkun Zhao,Tao Liu,Kai Xia,Xin Liu,Xiaodong Zhang
In this paper, agar/gelatin (AG/GE) composite film modified by cellulose nanocrystals (CNC), agar/gellan gum (AG/GG) and agar/κ-carrageenan (AG/KC) composite films modified by CNC and calcium chloride were prepared and their properties were investigated. The results showed that the three prepared nanocomposite films exhibited dense and smooth surface structure, and their tensile strength (TS), elongation at break (EB) and light transmittance were larger than 60 MPa, 21 %, 80 % at 660 nm, respectively. Their water swelling rate (SR), water solubility (WS) and water vapor permeability (WVP) were lower than 155 %, 33 % and 6.8 × 10 −11 g m/m 2 Pa s, respectively. These three prepared films not only exhibited better comprehensive properties than those of the existing studies, but also possessed edible, good light transmittance and heat seal performance, especially, possessed better fresh keeping performance than plastic-based food packaging film when they were used to preserve strawberry through packaging or coating methods.
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Microbial Cell Factories
·
2022
·Vol. 21
·期 1
·1-14
·
IF 6.352
Xia Yanwei,Wang Jingfan,Guo Chuanxu,Xu Huanhuan,Wang Wei,Yang Mingzhu,Shen Qirong,Zhang Ruifu,Miao Youzhi
Background Filamentous fungi are highly efficient at deconstructing plant biomass by secreting a variety of enzymes, but the complex enzymatic regulation underlying this process is not conserved and remains unclear.Results In this study, cellulases and xylanases could specifically respond to Avicel- and xylan-induction, respectively, in lignocellulose-degrading strain Trichoderma guizhouense NJAU4742, however, the differentially regulated cellulases and xylanases were both under the absolute control of the same TgXyr1-mediated pathway. Further analysis showed that Avicel could specifically induce cellulase expression, which supported the existence of an unknown specific regulator of cellulases in strain NJAU4742. The xylanase secretion is very complex, GH10 endoxylanases could only be induced by Avicel, while, other major xylanases were significantly induced by both Avicel and xylan. For GH10 xylanases, an unknown specific regulator was also deduced to exist. Meanwhile, the post-transcriptional inhibition was subsequently suggested to stop the Avicel-induced xylanases secretion, which explained the specifically high xylanase activities when induced by xylan in strain NJAU4742. Additionally, an economical strategy used by strain NJAU4742 was proposed to sense the environmental lignocellulose under the carbon starvation condition, that only slightly activating 4 lignocellulose-degrading genes before largely secreting all 33 TgXyr1-controlled lignocellulases if confirming the existence of lignocellulose components.Conclusion sThis study, aiming to explore the unknown mechanisms of plant biomass-degrading enzymes regulation through the combined omics analysis, will open directions for in-depth understanding the complex carbon utilization in filamentous fungi.
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Colloid and Interface Science Communications
·
2021
·
IF 4.914
Xin-Yu Jiang,Jia-Nan Yan,Yi-Nan Du,Shi-Qi Xu,Hai-Tao Wu
In this communication, the rheological behaviors of hydrolysates from scallop ( Patinopecten yessoensis ) male gonad (SMGHs) combined with eight polysaccharides , including ι -carrageenan, sodium alginate , guar gum , locust-bean gum, pectin, acacia gum, xanthan gum and agar, respectively, were reported. The mixture of SMGHs (5%) and each polysaccharide (0.03–1.25%) was characterized by visual observation and rheological characterization in the concentration ranges where each polysaccharide has visible viscosity and keeps flowing. The addition of ι -carrageenan (0.56%) increased the storage modulus of SMGHs at 0.1 Hz by almost 77-fold, reaching 344.9 Pa. While, when the shear rate was 0.13 s −1 , the mixed-gel viscosity of SMGHs/guar gum and SMGHs/locust-bean gum reached to 137.6 and 129.0 Pa·s, respectively. Moreover, SMGHs have potential application as a gelling agent in the food processing by complexing with a certain polysaccharide.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2021
·
IF 6.953
Haiyan Tian,Dong Xiang,Congfa Li
Herein, improvement of the stability of the water-in-oil-in-water (W/O/W) emulsions by addition of xanthan gum (XG)/locust bean gum (LBG) mixture in the inner water phase was aimed. The impact of XG/LBG mixture on the physical stability, microstructure and rheological properties of W/O/W emulsions was investigated. It was found that, compared with the control emulsions, the presence of XG/LBG mixture could improve the stability of W/O/W emulsions against coalescence. The tea polyphenols (TPPs) and XG/LBG mixture were simultaneously included in the internal aqueous phase of the double emulsion and stored at 25 and 40 °C in the dark for 28 d. The results showed that XG/LBG mixture not only had a protective role for TPPs encapsulated in the internal water phase, but also maintained more than 50% of the antioxidant capacity of TPPs.
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CARBOHYDRATE POLYMERS
·
2020
·
IF 7.182
Keding Li,Yuqing Lei,Jun Liao,Yong Zhang
Graphene oxide/locust bean gum (GO/LBG) aerogels, synthesized in an ice crystal template without using any chemical modifiers, were used for the treatment of water pollution. Various characterization results showed that GO/LBG aerogel exhibited a network-like three-dimensional (3D) structure with large specific surface area. The adsorption data revealed that GO/LBG aerogels with GO/LBG mass ratio of 1:4 (GO/LBG-1 aerogels) exhibited more prominent adsorption properties for Rhodamine-B (RhB, 514.5 mg g −1 ) than Indigo Carmine (IC, 134.6 mg g −1 ). Simultaneously, GO/LBG-1 aerogels could selectively remove RhB from a binary mixed solution of RhB-IC dyes. Furthermore, GO/LBG-1 aerogels also displayed excellent reusability and could still reach 92.4 % after ten cycles. Based on the above results, GO/LBG-1 aerogel could be considered as an ideal adsorbent with potential application value for removing water-soluble RhB from wastewater.
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BIORESOURCE TECHNOLOGY
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2023
·
IF 11.4
Fei Li,Yang Liu,Jia Jia,Hongbo Yu
Lignocellulosic biorefineries depended on effective pretreatment strategies to improve the conversion efficiency of the enzymatic hydrolysis. Here, this study coupled brown rot fungi and deep eutectic solvent (DES) to pretreat Pinus massoniana . The results showed that compared to fungal pretreatment and DES pretreatment alone, the combined ChCl-Lac/fungal pretreatments could effectively improve enzymatic saccharification of Pinus massoniana . The highest content of releasing reducing sugar reached 510.3 mg/g substrate. Environmental scanning electron micrograph (ESEM) showed that the surface structure of Pinus massoniana was almost completely torn and loose and FT-IR spectra and component analysis revealed that most of hemicellulose and lignin were selected removed and cellulose was enriched after ChCl-Lac/fungal pretreatments, which could account for the enhanced hydrolysis efficiency. The combination of biological pretreatment with DES pretreatment could be a mild and promising pretreatment approach for enzymatic saccharification of lignocellulose and had an extensive application prospect in the field of biorefinery.
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