Starch - Stärke最新文献_第2页

The Multiscale Structural Properties and In‐Vitro Digestibility of High Amylose Corn Starch During Autoclaving‐Cooling Treatment 高淀粉玉米淀粉在高压灭菌-冷却处理过程中的多尺度结构特性和体外消化率

Starch - Stärke Pub Date : 2024-04-24 DOI: 10.1002/star.202300250

Qiushuang Li, Lei Ma, Jun Liu, Yongqiang Cheng, Jianfeng Liang

{"title":"The Multiscale Structural Properties and In‐Vitro Digestibility of High Amylose Corn Starch During Autoclaving‐Cooling Treatment","authors":"Qiushuang Li, Lei Ma, Jun Liu, Yongqiang Cheng, Jianfeng Liang","doi":"10.1002/star.202300250","DOIUrl":"https://doi.org/10.1002/star.202300250","url":null,"abstract":"This work investigates the relationship between multiscale structural properties in high amylose corn starch (HACS) and its in‐vitro digestibility by analyzing the effects of autoclaving‐cooling treatment (ACT). Differential scanning calorimetry (DSC) shows that HACS displays a higher gelatinization temperature, wider endothermic gelatinization range, and higher enthalpy. Autoclaved corn starch exhibits enhanced thermal stability than the raw corn starch. X‐ray diffraction (XRD) shows that ACT does not change the crystalline type but increases the relative crystallinity (RC). Fourier transform infrared spectroscopy (FTIR) indicates that HACS exhibits a higher degree of order (DO) and double helixes (DHs) than normal corn starch (NCS), which are reduced by ACT. Scanning electron microscopy (SEM) reveals that HACS displays denser structures and smaller particle morphologies than NCS. After ACT, the granular of autoclaved corn starch shows a rough fiber network structure. Digestibility analysis reveals a positive correlation between the amylose content and resistant starch (RS) level in raw starch, while ACT promotes significant RS formation. This suggests that amylose promotes ordered structure formation, while autoclaving increased digestive resistance.","PeriodicalId":21967,"journal":{"name":"Starch - Stärke","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140661223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chemical, Mechanical, and Wettability Properties of Bioplastic Material from Manihot esculenta Cassava–Chitosan Blends as Plastic Alternative 作为塑料替代品的木薯-壳聚糖混合物生物塑料材料的化学、机械和润湿性能

Starch - Stärke Pub Date : 2024-04-22 DOI: 10.1002/star.202300278

Norashikin Albar, S. T. Anuar, A. A. Azmi, Siti Kamilah Che Soh, K. Bhubalan, Yusof Shuaib Ibrahim, W. Khalik, Nor Salmi Abdullah, Nasehir Khan E.M. Yahya

{"title":"Chemical, Mechanical, and Wettability Properties of Bioplastic Material from Manihot esculenta Cassava–Chitosan Blends as Plastic Alternative","authors":"Norashikin Albar, S. T. Anuar, A. A. Azmi, Siti Kamilah Che Soh, K. Bhubalan, Yusof Shuaib Ibrahim, W. Khalik, Nor Salmi Abdullah, Nasehir Khan E.M. Yahya","doi":"10.1002/star.202300278","DOIUrl":"https://doi.org/10.1002/star.202300278","url":null,"abstract":"The extensive use and disposal of various petroleum‐derived plastics has become a major cause of environmental pollution. The urgent need for sustainable materials to address plastic waste have resulted in the production of biodegradable plastics. In this study, a biodegradable plastic film is produced by incorporating chitosan with starch from Malaysian cassava (Manihot esculenta), utilizing the multihydroxyl properties of cassava starch. The results show that the addition of chitosan as a filler in cassava starch improves the physicochemical properties of the material, producing a bioplastic film with high compressive strength and resistance to water molecules. The contact angle of the developed biopolymer has been improved – from θ = 67.4° to θ = 97.8° – with the addition of the –NH functional group in the molecule, as confirmed by attenuated total reflectance Fourier‐transform infrared spectroscopy (v = 1555 cm−1). The tensile strength of bioplastic increases with chitosan content, proving its greater rigidity compared to bioplastic without chitosan. Additionally, the fastest biodegradation rate (9 days) occurs in the composition with high amounts of cassava in a ratio of 6:4 (cassava:chitosan). The bioplastic produced in this study readily decomposes in the environment, making it more sustainable, eco‐friendlier, and providing an alternative to mitigate the use of single‐use thermoplastics.","PeriodicalId":21967,"journal":{"name":"Starch - Stärke","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140673164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of Ultrasound‐Assisted Deep Eutectic Solvent Extraction and Bioactivities of Polysaccharide from Porphyra haitanensis 优化超声波辅助深共晶溶剂萃取和海藻多糖的生物活性

Starch - Stärke Pub Date : 2024-04-21 DOI: 10.1002/star.202300272

Wendie Hu, Bing Liu, Yao Wen

{"title":"Optimization of Ultrasound‐Assisted Deep Eutectic Solvent Extraction and Bioactivities of Polysaccharide from Porphyra haitanensis","authors":"Wendie Hu, Bing Liu, Yao Wen","doi":"10.1002/star.202300272","DOIUrl":"https://doi.org/10.1002/star.202300272","url":null,"abstract":"In this paper, ultrasound‐assisted method and deep eutectic solvent (DES) are used to extract polysaccharides from Porphyra haitanensis. The single‐factor experiment is carried out first, and then the response surface experiment is designed to obtain the optimal process conditions. The optimal extraction conditions are the molar ratio of choline chloride to oxalate of 1:1, the water content of DES of 60%, the solid–liquid ratio of 1:60 g mL−1, the time of 120 min, the power of 200 W, and the temperature of 80 °C, with the extraction yield of 4.42%. And the yield of P. haitanensis polysaccharides (PHPs) is 3.14% and 3.31% by water immersion and ultrasonic water extraction, respectively, indicating that the DES extraction method is superior to these two methods, and the optimization effect is good. The extracted polysaccharides are tested for biological activity after separation and purification on DEAE and Sephadex G‐75 columns. The results of α‐glucosidase inhibitory activity and α‐amylase inhibitory activity show that PHPs have certain antioxidant activity. 1,1‐Diphenyl‐3‐nitrophenylhydrazine (DPPH) and 2,2‐diazo‐di‐3‐ethylbenzothiazolin‐6‐sulfonic acid (ABTS) free radical scavenging assays show that PHPs have certain antiglycemic activity.","PeriodicalId":21967,"journal":{"name":"Starch - Stärke","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140679441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hemicellulose‐Based Nanofibers Decorated In Situ with Silver Nanoparticles for Antibacterial Applications 原位装饰银纳米粒子的半纤维素基纳米纤维的抗菌应用

Starch - Stärke Pub Date : 2024-04-21 DOI: 10.1002/star.202200282

Mariah Onditi, Geoffrey Bosire, Evans O. Changamu, Catherine Ngila

{"title":"Hemicellulose‐Based Nanofibers Decorated In Situ with Silver Nanoparticles for Antibacterial Applications","authors":"Mariah Onditi, Geoffrey Bosire, Evans O. Changamu, Catherine Ngila","doi":"10.1002/star.202200282","DOIUrl":"https://doi.org/10.1002/star.202200282","url":null,"abstract":"There is growing evidence that composites made up of nanomaterials and plant extracts are effective in combating drug‐resistant pathogens, which are increasing globally. In this study, a hemicellulose extract from cactus pads (Opuntia ficus indica) is blended with poly(vinyl) acetate and electrospun into fine nanofibers. Further, the electrospun nanofibers are encapsulated with silver nanoparticles (AgNPs), in situ, to form a nanocomposite, whose surface morphology are characterized using a scanning electron microscope (SEM). The SEM images showed smooth nanofiber strands (average diameter = 240 nm), with AgNPs randomly dispersed on them. The antibacterial activity of the nanocomposite is tested against five bacterial species. The results obtained showed that the nanonomposite has strong inhibitory effects against Gram‐positive and Gram‐negative bacteria, whereas the pristine nanofibers showed minimal or no antibacterial activity. This study demonstrates i) successful electrospinning of hemicellulose extracts into fine nanofibers and ii) encapsulation with AgNPs to produce a rigid nanocomposite with antimicrobial characteristics for various applications, especially those that require protection against pathogenic bacteria.","PeriodicalId":21967,"journal":{"name":"Starch - Stärke","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140678587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Syntheses, Properties, and Applications of Aminated‐Starch: A Review 人工合成淀粉的合成、特性和应用：综述

Starch - Stärke Pub Date : 2024-04-21 DOI: 10.1002/star.202300132

Feng‐kun An, Zhen Fu

引用次数: 0

Properties of Oxidized Potato Starch–Potassium Alum Mixtures, and Their Application in Starch Noodles 氧化马铃薯淀粉-钾明矾混合物的特性及其在淀粉面条中的应用

Starch - Stärke Pub Date : 2024-04-21 DOI: 10.1002/star.202300237

Shijie Huang, Xinfang Liu, Xiaoyu Zhang, Xiangxiang He, Guoyan Ren, Lei Luo

引用次数: 0

Viability of Ecofriendly Ionic Liquids in Starch Plasticization and Modification 环保离子液体在淀粉塑化和改性中的可行性

Starch - Stärke Pub Date : 2024-04-21 DOI: 10.1002/star.202300170

Shilpi Agarwal, Shailey Singhal

引用次数: 0

Mucoadhesion, Rheology, Swelling Behavior, and Immunomodulatory Properties of Polysaccharides of Gum Exudates Obtained from Astracantha echidnaeformis (Sirj.) Podlech as a Formulary Excipient Candidate 从 Astracantha echidnaeformis (Sirj.) Podlech 中提取的渗出胶多糖的粘附性、流变性、膨胀行为和免疫调节特性可作为配方辅料候选物质

Starch - Stärke Pub Date : 2024-04-21 DOI: 10.1002/star.202300262

Gholamhossein Yousefi, S. Farjadian, Mitra Saadat Bour Bour, A. Hamedi

{"title":"Mucoadhesion, Rheology, Swelling Behavior, and Immunomodulatory Properties of Polysaccharides of Gum Exudates Obtained from Astracantha echidnaeformis (Sirj.) Podlech as a Formulary Excipient Candidate","authors":"Gholamhossein Yousefi, S. Farjadian, Mitra Saadat Bour Bour, A. Hamedi","doi":"10.1002/star.202300262","DOIUrl":"https://doi.org/10.1002/star.202300262","url":null,"abstract":"The physicochemical, rheological, and mucoadhesive characteristics of gum derived from Astracantha echidnaeformis are investigated. It's polysaccharides are isolated using chromatography techniques, and their immunomodulatory characteristics are evaluated by subjecting Jurkat cells to the WST‐1 assay. The composition of these polysaccharides is analyzed using gas chromatography‐mass spectrometry (GC‐MS). The viscosity and shear‐thinning behavior of gum are directly influenced by its concentration and the presence of NaCl, whereas they are inversely affected by temperature. The gum has strong potential as a thickening agent for dispersed systems. The mucoadhesion strength of the gum insoluble fraction is 109 ± 4.58 g cm−2, indicating excellent adhesiveness for application to mucoadhesive formulations. Cells’ proliferation enhancement is found for the isolated manno‐arabinoglucan (MW: ≤1.27 kDa) and galacto‐arabinan (MW: ≥667.8 kDa) at concentrations lower than 400 µ mL−1, but at higher concentrations they inhibited the proliferation. The isolated pectic galacto‐arabinan (MW: 669.58 kDa) exhibited a proliferative effect at 250 µg mL−1, but the isolated manno‐galactoglucan (MW: 80.90 kDa) showed cytotoxicity at higher doses. The isolated proteoglycans has mostly galacto‐arabinan backbones with immunomodulatory properties. The gum can be used as a thickening agent for the physical stabilization of suspensions and gels, specifically those needing to be stored at cold temperatures.","PeriodicalId":21967,"journal":{"name":"Starch - Stärke","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140678607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Controlling the Porosity of Starch Hydrogels with Poly(Methyl Methacrylate) (PMMA) Beads 用聚甲基丙烯酸甲酯（PMMA）珠控制淀粉水凝胶的孔隙率

Starch - Stärke Pub Date : 2024-03-29 DOI: 10.1002/star.202300152

Athanasios Koutloumpasis, Ioannis Papadopoulos, Marina Karakousi, Christina Karamitrou, Rali‐Fotini Mirouli, Panagiotis Mpasinas, Eleni Sakka, E. Tzimtzimis, Dimitrios Tzetzis, Despoina Akritidou, V. Karageorgiou

{"title":"Controlling the Porosity of Starch Hydrogels with Poly(Methyl Methacrylate) (PMMA) Beads","authors":"Athanasios Koutloumpasis, Ioannis Papadopoulos, Marina Karakousi, Christina Karamitrou, Rali‐Fotini Mirouli, Panagiotis Mpasinas, Eleni Sakka, E. Tzimtzimis, Dimitrios Tzetzis, Despoina Akritidou, V. Karageorgiou","doi":"10.1002/star.202300152","DOIUrl":"https://doi.org/10.1002/star.202300152","url":null,"abstract":"Starch is a natural, biodegradable polymer that can be used to prepare hydrogels with various applications in food, pharmacy, medicine, agriculture, etc. In this study, a method of preparation using poly(methyl methacrylate) (PMMA) beads to control the porosity of starch hydrogels is proposed. The hydrogels are crosslinked with trisodium trimetaphosphate and dried in a vacuum oven. Results show that increasing the amount of PMMA beads result in higher porosity hydrogels ranging from ≈35% for hydrogels where no PMMA beads are used to ≈88% for hydrogels where the mass ratio of PMMA beads to starch is 10:1. Higher porosity hydrogels have a higher equilibrium water content and swelling degree, but lower mechanical properties. All hydrogels have a low solubility (<≈5%) and a high gel fraction (>≈90%) percentage. Upon degradation in α‐amylase at 37 °C, low porosity hydrogels (prepare with 0:1 and 1:10 PMMA beads:starch) degrade within 30 min, while high porosity hydrogels (prepare with 1:1 and 10:1 PMMA beads:starch) degrade within 3 weeks. The release of a dye that is incorporated into the hydrogel walls follows similar kinetics. Therefore, the use of PMMA beads is an efficient method to control starch hydrogel's porosity and properties.","PeriodicalId":21967,"journal":{"name":"Starch - Stärke","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140366177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spray‐Drying Assisted 3D Printing to Manufacture Beef Products 用喷雾干燥辅助 3D 打印技术制造牛肉制品

Starch - Stärke Pub Date : 2024-03-29 DOI: 10.1002/star.202300286

Peng Liu, Ziwan Zhou, Wenchang Zhou, Chunjia Liu, Nanfang Wang, Fan Zhang

引用次数: 0