COLORATION TECHNOLOGY
·
2024
·
IF 2
Na-won Baek,Shin-hee Lee
Enzymatic dyeing is an environmentally friendly and energy-efficient dyeing method conducted at low temperatures, making it an important option for sustainable dyeing processing technology. This study investigated the enzymatic dyeing of cotton and silk fabrics using six phenolic monomers (catechol, hydroquinone, 2-aminophenol, 4-aminophenol, 1,4-phenylenediamine and 2,5-diaminobenzenesulphonic acid) via oxidative polymerisation catalysed by horseradish peroxidase (HRP). The research explored the colouring mechanism, functional attributes and dyeability of the fabrics. The polymerisation mechanism of the polymer was elucidated through liquid chromatography–tandem mass spectrometry, while the functional and morphological characteristics of the dyed fabric were examined via Fourier transform–infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy imaging. The dyed fabric underwent dyeability assessments, including colour depth analysis and various fastness tests. Under mild reaction conditions, nearly all the phenolic monomers successfully dyed both the silk and cotton fabrics using HRP. The dyed fabrics demonstrated enhanced thermal stability and dyeability. However, the cotton fabrics exhibited worse dyeability and fastness than the silk fabrics, with noticeable stains on their surfaces when dyed with certain phenols. These findings underscore the suitability of enzymatic oxidative dyeing for protein fibres over vegetable fibres, as well as the importance of tailoring enzymatic dyeing processes for vegetable fibres.
研究领域:
纺织科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 58
·33872-33882
·
IF 3.049
Genxing Zhu,Qi Liu,Fengyi Cao,Qi Qin,Mingli Jiao
Dyes are typical water contaminants that seriously affect water quality. In this study, silkworm cocoon derived N, O-codoped hierarchical porous carbon was successively developed via a facile pre-carbonization and chemical activation method, and characterized thoroughly by SEM, TEM, HRTEM, XRD, Raman, N2 adsorption and XPS. The as-prepared N, O-HPC showed a well-developed porous structure with an ultra-high specific surface area of 2270.19 m2 g−1, which proved to be a high-efficiency adsorbent. Batch adsorption experiments demonstrated that MB adsorption was highly dependent on contact time, initial MB concentration, temperature and initial solution pH. However, no remarkable effects of humic acid and ionic strength were observed. In the kinetic studies, the good applicability of a pseudo-second-order kinetic model was demonstrated. The adsorption isotherm study showed that a Langmuir isotherm model can describe the experimental data much more suitably with a maximum monolayer adsorption capacity value of 2104.29 mg g−1, which is among the highest in previously reported adsorbents and ascribed to multiple adsorption mechanisms including pore filling, π–π stacking interaction and electrostatic interaction between MB and N, O-HPC. Thermodynamic analyses suggested that MB adsorption onto N, O-HPC was spontaneous and endothermic. Furthermore, the as prepared adsorbent showed highly efficient adsorption for MB in tap water and synergistic adsorption performance toward MB and MO. Therefore, N, O-HPC derived from silkworm cocoon could be considered as an efficient, novel and advantageous material for wastewater remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
·
2021
·Vol. 194
·期 3
·1290-1302
·
IF 2.926
Ji Yingrui,Xu Long,Xu Qingqing,Liu Xuan,Lin Sen,Liao Sentai,Wang Weifei,Lan Dongming
More and more industries demand environmental friendliness. Silkworm pupae oil (SPO), extracted from the desilked silkworm pupae, can serve as a promising substrate alternative to use in plasticization. This study aimed to prepare epoxidized silkworm pupae oil (ESPO) and investigate their effects on the thermal stability and plasticization of polyvinyl chloride (PVC) films. A chemo-enzymatic method of ESPO was developed in the presence of Lipase SMG1-F278N and H 2 O 2 in natural deep eutectic solvents (DESs). Lipase SMG1-F278N could initiate the epoxidation reaction effectively at room temperature with a negligible loss of activities 10 batches. A maximum oxirane value of 6.94% was obtained. The formation of oxirane ring in ESPO was confirmed by FTIR and 13 C NMR spectra. Moreover, ESPO showed a better thermal stability and lower freezing point than epoxidized soybean oil (ESO). It was demonstrated that ESPO had a good frost resistance. In addition, ESPO showed a significantly improved plasticizing effect on flexible polyvinyl chloride (PVC). Compared with ESO, ESPO could increase the tensile elongation at break effectively. A significantly lower migration rate of plasticizer was observed in PVC plasticized with ESPO.
研究领域:
材料科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Sustainability
·
2023
·Vol. 15
·期 9
·7090
·
IF 3.9
Ze-Jun Wang,Yu-Hang Zhang,Rong-Yao Gao,Hua-Bing Jia,Xiao-Jing Liu,Ya-Wen Hu,Qian-Qian Shao,Li-Min Fu,Jian-Ping Zhang
This work reports the biological toxicity of nano plastic particles (NPs) to silkworms fed on the bait dopped with polystyrene encapsulated luminescent nanoparticles. The processes of NPs intake and excretion were monitored by means of time-gated optical imaging (TGI) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS), which allowed the quantification of the spatiotemporal deposition of NPs in an individual silkworm. The rates of NPs excretion and sequestration were found to be 99.92% and 0.08%, respectively, and the NPs retentate stayed mainly in the fat body (67.7%), digestive tract (18.0%), and head (7.54%). Adverse effects of NPs exposure were accordingly confirmed such as growth retardation and smaller physique. The results of the present work confirmed the possibility of nano-plastics accumulating and transmitting along the food chain in terrestrial ecosystems. The present work demonstrates the potential of employing silkworm as a model of full metamorphosed insects for exploring the biological impact of NPs on congeneric terrestrial animals, as well as the efficacy of the TGI-MS modality for in situ visualizing and quantifying the propagation of NPs via the primary food chain.Keywords:nano plastic particles;time-gated optical imaging;silkworm
研究领域:
环境科学
·
毒理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2020
·
IF 3.104
Vivian Andoh,Huaiyang Guan,Lin Ma,Weiguo Zhao,Long Li,Guohua Wu
Neodymium (Nd) is one of the most famous members of rare earth elements family. With the increasing global demand for Nd, it can inevitably enter the environment and affect the ecological environment through the food chain and other ways. Therefore, it is very important to study the biological effects of Nd. In this study, the biological effects of 3 kinds of Nd compounds, i.e. neodymium oxide (Nd 2 O 3 ), neodymium chloride (NdCl 3 ) and neodymium nitrate (Nd(NO 3 ) 3 ), were evaluated by using silkworm models through the method of intravascular injection. Each of the three Nd compounds was prepared into 6 groups at different concentrations (40, 50, 60, 70, 80, 90 μg/μL). The results show that within the certain concentration range, Nd compounds show great damage to the growth of silkworms since high death rate is observed: the death rate from Nd 2 O 3 group is floating between 30% and 80%, the one from NdCl 3 group is between 17% and 33% and that from Nd(NO 3 ) 3 group is between 23% and 37%. It also reveals that Nd compounds have some negative effects on the body length and weight of silkworms. However, the histophysiological study shows that the three Nd compounds cause no obvious negative effects on the cell morphologies in midgut, fat body and silk gland. The XRD and FTIR spectra show that the secondary and the crystalline structures of silks are not destroyed, the TGA and DTG data exhibit that the thermal stability of silks is not damaged, and the tensile test shows that the mechanical properties of silks are not affected significantly by the intake of Nd compounds. In general, the intake of Nd compounds has significant inhibitory effects on silkworm growth but little negative impact on silk structures or cell morphology, the study can provide useful toxicological data for the safe application of Nd compounds in various fields.
研究领域:
环境科学
·
生物学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jianyu Huang,Cai Ying,Xiaoqiong Li,Jian Kuang,Jianqiang Li,Tao Huang,Jinjun Li
In this experiment, the effects of different concentrations of cassava starch (CS) on the gel behavior of faba bean protein (FBP) were studied, focusing on the structural characteristics, gel characteristics and physical and chemical characteristics of the gel system. Specifically, with the increase of CS concentration from 4 % to 12 %, the morphology of the sample changed from fluid to gel solid. From the molecular structure, different concentrations of CS affected the secondary and tertiary structures of FBP protein, which made aromatic amino acids move to the surface of protein and promoted the transformation from α-helix to β-sheet. In addition, free sulfhydryl groups are converted into disulfide bonds, which increases the number of hydrogen bonds in the system. Microscopically, high temperature treatment leads to the cracking of CS and FBP structures, which enhances the noncovalent interactions between them, and forms a compact and smaller pore three-dimensional network structure, providing more channels for external moisture to transfer to the inside. From the gel characteristics, the water holding capacity, viscoelasticity and mechanical behavior of the composite gel were improved when the concentration of CS was 6 %-12 %. This work provides reference for the application of cassava starch-faba bean protein gel in specific food and medicine fields.
研究领域:
食品科学
·
生物化学
✓ 已验证
DOI
PubMed
高影响因子
Food Chemistry-X
·
2025
·
IF 8.2
Hua Li,Yu Liu,Nidthaya Seephua,Chuenjit Prakitchaiwattana,Rui-Xin Liu,Ju-Sheng Zheng,Sirithon Siriamornpun
To improve the nutritional value and biofunctionalities of traditional rice noodles, this study focused on the effects of incorporating cricket powder (CP) and silkworm pupae powder (SP) on the protein content and digestibility, starch digestibility, and antioxidant potential, as well as the sensory and cooking qualities of rice noodles. Compared to the control (4.96 % and 63.25 %), CP and SP significantly increased the protein content (12.06 %–25.85 %) and in vitro digestibility (71.61 %–90.58 %) ( p < 0.05). CP and SP also considerably reduced the estimated glycemic index from 70.36 to 53.47, which may be partly related to the binding of more protein and lipid, as revealed by Fourier-transform infrared spectroscopy. Nevertheless, scanning electron microscopy showed a loose and porous noodle structure, which contributed to higher cooking loss, reduced cohesiveness, and lower tensile strength. Overall, these findings suggest that edible insect powders are promising ingredients for developing functional foods with enhanced nutritional properties.
研究领域:
食品科学
·
营养学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Foods
·
2020
·Vol. 9
·期 12
·1816
·
IF 4.092
Liuying Zhu,Wenting Li,Zeyuan Deng,Hongyan Li,Bing Zhang
The composition and antioxidant activity of bound phenolics in three legumes (soybean, vicia faba, and kidney bean), and their metabolism and bioaccessibility in the gastrointestinal tract were investigated in this study. The total phenolic content, total flavonoid content, and antioxidant activities (ABTS and FRAP) were evaluated. The phytochemical compositions of the three legumes after acid/alkaline hydrolysis, simulated gastrointestinal digestion, and colonic fermentation were identified and quantified by UPLC-ESI-QTOF-MS/MS and HPLC-ESI-QqQ-MS/MS. The results showed that the three legumes were rich in bound phenolic compounds, and possessed a strong antioxidant activity; among which kidney bean showed a higher bound flavonoid content and antioxidant activity than the other two legumes. Alkaline hydrolysis allowed a more thorough extraction of the bound phenolics of the three legumes than acid hydrolysis. The released contents of bound phenolics were extremely low in in vitro digestion, whereas colonic fermentation favored the release of more phenolic compounds. Kidney bean, which presented the highest bound flavonoid content and antioxidant activity, had the lowest bioaccessibility. Our study provides a wider insight into the constituents and bioavailability of bound phenolic compounds in the three legumes.Keywords:soybean;vicia faba;kidney bean;acid/alkaline hydrolysis;in vitro digestion;colonic fermentation
研究领域:
食品科学
·
植物化学
·
营养学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2019
·
IF 5.108
Shuying Li,Hongbing Jiang,Kun Qiao,Wenjun Gui,Guonian Zhu
Silkworm ( Bombyx mori ) is one of the most important economic insects in the world, while pesticides impact its economic benefits. Tebuconazole is a fungicide that has been frequently detected in agriculture systems at concentrations that affect endocrine function in organisms. In the present study, silkworm larvae at different instar stages were exposed to tebuconazole, respectively. Cocoon weight, cocoon shell weight and cocoon shell rate were significantly decreased by 6.8%, 11.8% and 4.4% respectively, after exposure to 0.40 mg/L tebuconazole at 2nd -3rd instar stage. Vacuolization was found in the exposure silkworm under histopathological study at all stages exposures, indicating potential damage to silk gland. Downregulation of genes transcription ( Fibh , Fibl , P25 , Ser2 , Ser3 ) involved with protein synthesis in the silk gland were further observed, and the results showed significant decreasing in mRNA expression among the tebuconazole treatments. Ecdysteroid levels in silkworm were changed with pronounced decreases after exposed to tebuconazole. In contrast, exposure to tebuconazole significantly increased juvenile hormone 1 concentrations and the maximum increasing fold of juvenile hormone 1 was up to 3.73 which was observed at stage I exposure. In addition, co-exposure to 2 and 10 mg/L forskolin able to mitigate tebuconazole-induced downregulate of mRNA expression of Sgf1 in the present study, indicating the potential mechanism of tebuconazole-induced chronic toxicity in silkworm may relative to PI3K/AKT/TORC1/Sgf1 pathway.
研究领域:
昆虫学
·
毒理学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials
·
2017
·Vol. 10
·期 6
·667
·
IF 2.654
Gang Tao,Rui Cai,Yejing Wang,Kai Song,Pengchao Guo,Ping Zhao,Hua Zuo,Huawei He
Bionanocomposite packaging materials have a bright future for a broad range of applications in the food and biomedical industries. Antimicrobial packaging is one of the bionanocomposite packaging materials. Silver nanoparticle (AgNP) is one of the most attractive antimicrobial agents for its broad spectrum of antimicrobial activity against microorganisms. However, the traditional method of preparing AgNPs-functionalized packaging material is cumbersome and not environmentally friendly. To develop an efficient and convenient biosynthesis method to prepare AgNPs-modified bionanocomposite material for packaging applications, we synthesized AgNPs in situ in a silk fibroin solution via the reduction of Ag+by the tyrosine residue of fibroin, and then prepared AgNPs–silk/poly(vinyl alcohol) (PVA) composite film by blending with PVA. AgNPs were synthesized evenly on the surface or embedded in the interior of silk/PVA film. The prepared AgNPs–silk/PVA film exhibited excellent mechanical performance and stability, as well as good antibacterial activity against both Gram-negative and Gram-positive bacteria. AgNPs–silk/PVA film offers more choices to be potentially applied in the active packaging field.Keywords:biosynthesis;AgNPs;silk;PVA;packaging application
研究领域:
材料科学
·
生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 7
·1177
·
IF 5.719
Zhong-Feng Gao,Lin-Lin Zheng,Wen-Long Fu,Lei Zhang,Jin-Ze Li,Pu Chen
In this study, we fed the larval of Bombyx mori silkworms with nanodroplets of liquid metal (LM) coated with microgels of marine polysaccharides to obtain stretchable silk. Alginate-coated liquid metal nanodroplets (LM@NaAlg) were prepared with significant chemical stability and biocompatibility. This study demonstrates how the fed LM@NaAlg acts on the as-spun silk fiber. We also conducted a series of characterizations and steered molecular dynamics simulations, which showed that the LM@NaAlg additions impede the conformation transition of silk fibroins from the random coil and α-helix to the β-sheet by the formation of hydrogen bonds between LM@NaAlg and the silk fibroins, thus enhancing the elongation at the breakpoints in addition to the tensile properties. The intrinsically highly stretchable silk showed outstanding mechanical properties compared with regular silk due to its 814 MPa breaking strength and a breaking elongation of up to 70%—the highest reported performance so far. We expect that the proposed method can expand the fabrication of multi-functional silks.Keywords:silkworm silk;liquid metal;sodium alginate;silk fibroin;functional materials
研究领域:
生物材料学
·
纺织科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2022
·
IF 7.425
Wenting He,Hong Huang,Jia He,Sidra Subhan,Yi Peng,Meiyun Huang,Hui He,Ying Tang,Zhongxing Zhao
Antioxidant peptides from edible protein sources have attracted great attention due to their high activity, easy adsorption and low toxicity. The purpose of this study was to develop a new MOF material with specific recognition and capture ability to achieve the aim of highly efficient and selective antioxidant peptides from silkworm pupa protein hydrolysate-N (SPPH-N). Firstly, Histidine (His) widely presented in antioxidant peptides was used to in-suit construct the modified ZIF-8 material (ZIF-His) with imprinted defective mesopores, based on “molecular imprinting strategy”. Then, it was applied to extract antioxidant peptides from SPPH-N. ZIF-His exhibited high adsorption uptake for antioxidant peptides and especially presented specific adsorption property for peptides contained His, tryptophan, phenylalanine and tyrosine. Three peptides with the highest antioxidant activity (FKVPNMY, AVNMVPFPR and VNMVPFPR) from ZIF-His eluent were identified by Nano-LC-MS/MS. These peptides were synthesized and presented the excellent free radicals scavenging activity and the Ferric reducing power.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）