FOOD HYDROCOLLOIDS
·
2016
·
IF 3.858
Wei Li,Ya Zhu,Feng Ye,Bin Li,Xiaogang Luo,Shilin Liu
Cellulose-based microgels, prepared by the sol-gel transition method, were evaluated to extent the loading capacity and make more controlled release of probiotics . Granules of calcium carbonate as porogenic agents made the cellulose microgels with different porosity, and the S BET of modified cellulose microgels was increased to 197 m 2 /g. The microgels were constituted by the interconnected network of the cellulose nanofibrils, which was house-like. The house-liked microgels had the ability for the accommodation of Lactobacillus plantarum ( L. plantarum ) as high as 10 10 cfu/g, and the released viable cells was up to 3.10 × 10 10 cfu/g. Furthermore, the Ca-alginate shell protection of the cellulose houses kept the loaded L. plantarum cells from liberating into stomach but released the cells at intestinal tracts due to the effect of pH-responsibility. From the cross-sectional fluorescence image, L. plantarum cells mainly focused on the cellulose microgels houses instead of Ca-alginate shell. It indicated that the surface modification of the cellulose microgels houses by using alginate based hydrogel exhibited more controlled release of L. plantarum cells, which could be increased to 5.80 × 10 8 cfu/mL at 360 min. Prolonged duration in simulated intestine fluid contributed to making sure that cells reached the desired region of intestine tracts. The designed composite system advances in affording better shelter for probiotic residence or other bioactive nutrients.
研究领域:
食品科学
·
微生物学
·
材料科学
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2016
·
IF 5.267
Yangyang Han,Xiaodong Wu,Xinxing Zhang,Zehang Zhou,Canhui Lu
A novel and straightforward synthetic strategy was developed to prepare silver nanoparticles-doped cellulose microgels (Ag NPs@CMG) nanohybrids at room temperature. Residual alkali (sodium hydroxide/urea) from a cellulose dissolving system was reused and acted as a functional accelerant, which made it possible for Ag+ to be reduced to Ag0 by CMG at room temperature, yielding Ag NPs decorated on CMG. The as-prepared Ag NPs@CMG nanohybrids exhibited excellent catalytic performance in reduction of 4-nitrophenol and organic dyes. Moreover, the Ag NPs@CMG nanohybrids were capable to form a desirable porous membrane for catalyzing and simultaneous product separation. Reactants passing through the membrane could be catalytically transformed to product, which is of great significance for water treatment. As a demonstration, three kinds of organic dye solutions were successfully decolorized by using a Ag NPs@CMG nanohybrids-based membrane. The simplicity, sustainability, and straightforwardness of this approach to prepare a highly efficient catalyst and functional membrane open up new possibilities for large-scale production and application of bioresources/noble metal nanohybrids in various fields.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
Food Packaging and Shelf Life
·
2025
·
IF 10.6
Feng Cai,Zhengyin Duan,Dehai Yu,Zhaoping Song,Peng Lu
The incorporation of lemon essential oil (LEO) into cellulose nanofibrils (CNF) shows great promise in the field of sustainable antimicrobial packaging, but is challenged by poor water dispersibility of LEO and the low retention within the film. In this study, nanocellulose microgel (MG) was designed as particle stabilizers for emulsifying LEO and highly stable high internal phase Pickering emulsions (HIPE) were successfully fabricated. MG particles were constructed through chemical bonding of polyethyleneimine onto 2,2,6,6-tetramethylpiperidinyl-1-oxide (TEMPO)-oxidized nanocellulose, characterized with excellent interfacial wetting properties (reduction of oil-water interfacial tension from 11.36 to 7.84 mN/m) and antimicrobial activity (the MIC for Listeria monocytogenes was 125 μL/mL). The HIPE was obtained by dispersing LEO into MG water dispersion (0.5 wt%). The HIPE with LEO fraction as high as 75 % maintained stability within pH 5 to pH 9 without phase separation after 6 days. Films cast from HIPE and CNF blends have excellent integrity and high LEO content (38.94 %). When HIPE was added at 9.6 wt%, LEO was effectively encapsulated by CNF and MG, embedded in the film with high retention, and exhibited significant antibacterial effects against Listeria monocytogenes , antibacterial rate up to 100 %. This work, based on MG, achieves high internal phase emulsification of LEO and enhanced retention within the film, providing a novel perspective and strategy for efficient encapsulation of essential oils and their economical application in antimicrobial packaging.
研究领域:
食品科学
·
材料科学
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 9
·7339-7347
·
IF 3.289
Shilin Liu,Ya Zhu,Wei Li,Yan Li,Bin Li
Surface modification of the magnetic cellulose particles has been conducted by using AEAPS, the modified magnetic cellulose particles were then used for the immobilization of lipase for catalysis reaction. The highest specific activity for AEAPS modified magnetic cellulose scaffold was increased to about 30 fold that of the free lipase without support. Furthermore, the reusability of the immobilized lipase on AEAPS modified magnetic cellulose particles was also improved, the relative activity of the ARCM-2 and AMRCM1-2 after being reused for 5 times still remained 72.8% and 71.2%, respectively. Moreover, the immobilized lipase on AEAPS modified magnetic cellulose particles was easily recovered without significant decrease in the specific activity. The immobilization of lipase on AEAPS modified magnetic cellulose particles led to the improvement in stability of activity and reusability for non-aqueous transesterification.
研究领域:
生物化学
·
生物催化
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yang Yang,Meng Zhang,Zhaoping Song,Peng Lu
Lightweight soft hydrogels are ideal materials for next-generation sustainable wearable flexible electronics. However, achieving an optimal combination of high flexibility, high sensitivity, and micropressure sensing presents significant challenges. Introducing porous structures has emerged as a promising approach to enhance the micropressure responsiveness of hydrogels. This study proposes a highly stable high internal phase Pickering emulsion (HIPE) template stabilized by nanocellulose microgels to fabricate ultrasoft porous hydrogels with high porosity. By regulating the stability and microstructure of the HIPE, the porous hydrogels achieved synergistic improvements in high deformability, subtle pressure detection, and enhanced sensitivity. The porous hydrogels prepared by combining HIPE with an acrylic acid/acrylamide system exhibited low Young’s modulus (11 kPa), high porosity (75.9 %), extensive tensile strain range (0–1368 %), enhanced sensitivity coefficient (133.18 kPa −1 ) under subtle pressures (0–230 Pa), and excellent skin-adhesion capabilities. The integrated porous hydrogel sensors enabled precise detection of micropressure signals (e.g., pulses and wrist movements) under various motion states. This study provides a novel strategy for improving micropressure detection and sensitivity in hydrogel-based flexible micropressure sensors, highlighting their immense potential for diverse applications in flexible electronics.
研究领域:
材料科学
·
生物医学工程
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2016
·
IF 2.857
Wei Li,Xiaogang Luo,Rong Song,Ya Zhu,Bin Li,Shilin Liu
Advances in probiotic markets are always restrained by a low viable loading capacity and poor viability. Herein, cellulose microgels (CMs) with high porosity of 95.83 ± 0.38%, prepared by the sol–gel transition method, turned out to be a hospitable host that accommodated a large number of viable Lactobacillus plantarum higher than 109 colony-forming units (cfu)/g. The unique porous structure fascinated probiotics to penetrate into the core of microgels. The conjugation with alginate helped for better acid resistance and bacterial survival of the probiotics. In comparison to Ca–alginate gels, core–shell gels showed sustainable release of L. plantarum cells without damage of viability, lasting for 360 min in simulated intestine fluid. The cellulose host helped to sustain the viable cell release for a longer duration and afford better shelter for L. plantarum cells as a result of the porous structure and rigid supporting property. The core–shell gels are promising for constructing targeted delivery vehicles of bioactive nutrients.
研究领域:
食品科学
·
生物技术
·
微生物学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2019
·
IF 6.044
Wei Li,Liming Liu,Huafeng Tian,Xiaogang Luo,Shilin Liu
Probiotics are believed to provide benefits to human health; however, a good storage stability is the prerequisite for the probiotic products making function. Herein, we reported a pathway to fabricate the Ca-alginate/cryoprotectants/cellulose composite (ACFP) capsules to protect L. plantarum cells, which showed the minimal loss of viability during the vacuum freeze-drying process. The trehalose and whey protein isolate (WPI) ingredients in the cryoprotectants prolonged the dissolution time of Ca-alginate shell, which contributed to controlling the release of cells in the desired region. The dry ACFP capsules exhibited gradual release of L. plantarum cells in simulated intestinal fluid (SIF), 2.6 × 10 6 cfu/mL at 210 min. In addition, 0.1 g of the dry ACFP capsules showed the viable release amount of 3.3 × 10 6 cfu/mL after the storage of 160 days at 4 °C. The promising results provided a strategy of encapsulating probiotic cells to achieve long-term storage stability and enhanced controlled release behavior in simulated intestinal fluid in the meantime.
研究领域:
生物技术
·
食品科学
·
药学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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