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组分差异分析结合智能感官对本草栽培银耳风味特征的分析

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食品与机械 2024年第3期40卷 173-180页

作者：陈万超吴迪肖敏生姚淑先杨焱刘艳芳上海市农业科学院食用菌研究所上海201403 农业农村部南方食用菌资源利用重点实验室上海201403 国家食用菌工程技术研究中心上海201403 上海开森生物科技有限公司上海201824 福建山湖本草银耳有限公司福建宁德352262

目的:明确本草栽培银耳的风味特征。方法:以本草基质栽培的白色银耳(本草银耳)为研究对象,常规栽培基质黄色银耳和白色银耳为对照,采用高效液相色谱法和顶空固相微萃取—气相色谱—质谱联用技术(HS-SPME-GC-MS)分析其风味组成差异,并结... 详细信息

目的:明确本草栽培银耳的风味特征。方法:以本草基质栽培的白色银耳(本草银耳)为研究对象,常规栽培基质黄色银耳和白色银耳为对照,采用高效液相色谱法和顶空固相微萃取—气相色谱—质谱联用技术(HS-SPME-GC-MS)分析其风味组成差异,并结合智能感官技术对本草银耳风味特征进行解析。结果:本草银耳从鲜、甜味氨基酸和呈味核苷酸含量,滋味活度值和等鲜浓度值,电子舌等多维度评价显示,其鲜味强度均低于黄色银耳和白色银耳。HS-SPME-GC-MS分析结果显示,本草银耳鉴定得到82种挥发性物质,高于白色银耳(71种)和黄色银耳(49种),以酯类为主,占比16.9%~22.4%,呈现浓郁的花草芳香,同时鉴定得到26种银耳特征香气成分,9种白色银耳特有成分和4种本草银耳特有成分;香气物质含量方面,本草银耳亦占据优势。结论:本草银耳鲜味淡香气浓,可开发调制饮品,而黄色银耳更适合作为菜肴。

关键词：银耳本草银耳风味电子舌电子鼻

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消费者购买低抗肉食品意愿与行为的偏差分析

食品工业 2024年第1期45卷 229-234页

作者：李晴晴侯国庆徐万超内蒙古农业大学经济管理学院呼和浩特010018

减少养殖中抗生素的使用对保障肉食品安全、促进畜牧业高质量发展具有重要意义。而探讨消费者对低抗肉食品的购买意愿能否真正转换为购买行为,有利于从消费者角度思考推广低抗肉食品发展可能存在的问题。文章通过650份消费者调研数据,... 详细信息

减少养殖中抗生素的使用对保障肉食品安全、促进畜牧业高质量发展具有重要意义。而探讨消费者对低抗肉食品的购买意愿能否真正转换为购买行为,有利于从消费者角度思考推广低抗肉食品发展可能存在的问题。文章通过650份消费者调研数据,结合认知失调理论,采用多元无序Logistic回归模型实证分析感知价值和主观知识对消费者购买意愿与行为偏差的影响。研究表明:感知价值中的安全感知、健康感知和环境感知对消费者是否愿意购买低抗肉食品有显著影响,且消费者的感知能力越强,越倾向于购买低抗肉食品;主观知识中不关注低抗的消费者易产生购买意愿与行为不一致的问题,对于低抗肉食品的了解程度较少的消费者易出现认知失调现象。另外,对绿色食品认证机构信任度较低的消费者,其消费意愿与实际购买行为易产生偏差。

关键词：感知价值主观知识低抗肉认知失调

Geometrical structures, and electronic and transport properties of a novel two-dimensional β-GaS transparent conductor

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Nano Research 2015年第10期8卷 3177-3185页

作者： Zhangxian Chen Liang Huang Yongjie Xi Ran Li wanchao Li Guoqin Xu Hansong Cheng DepartmentofChemistry NationalUniversityofSingaporeSingapore117543Singapore SustainableEnergyLaboratory ChinaUniversityofGeosciencesWuhanWuhan430074China DepartmentofChemicalandPetroleumEngineering UniversityofWyomingWY82071USA

Two-dimensional （2D） materials are highly promising for flexible electronics, and graphene is the only well-studied transparent conductor. Herein, density functional theory has been used to explore a new transparent conducting material via adsorption of H on a 2D β-GaS sheet. This adsorption results in geometrical changes to the local structures around the H. The calculated electronic structures reveal metallic characteristics of the 2D α-GaS material upon H adsorption and a large optical band gap of 2.72 eV with a significant Burstein-Moss shift of 0.67 eVo The simulated electrical resistivity is as low as 10^-4 Ω.cm, comparable to the benchmark for ITO thin films.

关键词： β-GaS two-dimensional materialtransparent conductor density functional theory transport property

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风电功率预测的新兴技术与发展趋势综述

现代工业经济和信息化 2024年第5期14卷 171-172,175页

作者：张顺黄万超谢欣宇张浩哲石河子大学新疆石河子832003

介绍了风电功率预测技术的新兴技术与发展趋势,分析了分区建模、Koopman算子深度神经网络、DBN与多元线性回归结合等方法;探讨了未来研究的方向,强调了对算法的改进和多领域应用的重要性。

关键词：风电功率预测分区建模 Koopman算子深度神经网络 DBN 多元线性回归

Dynamic patterns of the translatome in a hybrid triplet show translational fractionation of the maize subgenomes

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The Crop Journal 2022年第1期10卷 36-46页

作者： wanchao Zhu Sijia Chen Tifu Zhang Jia Qian Zi Luo Han Zhao Yirong Zhang Lin Li National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070HubeiChina Jiangsu Provincial Key Laboratory of Agrobiology Institute of Germplasm Resources and BiotechnologyJiangsu Academy of Agricultural SciencesNanjing 210014JiangsuChina Key Laboratory of Crop Heterosis and Utilization(MOE)and State Key Laboratory for Agrobiotechnology Key Laboratory of Crop Genomics and Genetic Improvement(MOA)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing 100193China

Heterosis,the phenomenon in which hybrids outperform their parents,has been utilized in maize(Zea mays L.)for over 100 *** provide a more complete understanding of heterosis,we collected a comprehensive transcriptome and translatome dataset on seedling leaves for B73,Mo17,and their F1 hybrid,which provided a dynamic landscape of transcriptomic and translatomic variation in *** additivity accounted for a large proportion of variation at two omics-levels,an elevated nonadditive effect was observed in the translatome,especially in the translated subgenome maize1 genes,and the genes that switched from additivity in the transcriptome to nonadditivity in the translatome were significantly enriched in the subgenome *** genes with allele-specific expression and translation show dramatic regulatory switches between the transcriptome and translatome,and partial genes with allele-specific translation underlying regulatory mechanism also exhibited subgenome ***,we found the translated isoforms show different expression patterns compared with transcriptome and more genes changed their dominant isoforms during the genetic flow from parents to the hybrid at the translatome *** translated genes with switched dominant isoforms significantly biased to the subgenome maize2 while genes with conserved dominant isoforms significantly enriched in subgenome ***,the dynamic changed patterns in translatome across hybrid and parental lines show translational fractionation of the maize subgenomes,which may be associated with heterosis in maize and provides a potential theoretical basis for breeding.

关键词： Heterosis Translatome Ribosome-sequencing(Ribo-seq) Subgenomes Maize

青海高原栽培羊肚菌营养和氨基酸特征分析及综合评价

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食用菌学报 2024年第2期31卷 64-75页

作者：陈万超李文陈辉张津京唐利华吴迪张忠杨焱上海市农业科学院食用菌研究所农业农村部南方食用菌资源利用重点实验室国家食用菌工程技术研究中心上海201403

为探究高原地区栽培羊肚菌(Morchella spp.)的营养品质,以海拔3 570 m栽培的3个六妹羊肚菌(M. sextelata)品种(M6、HB-8和HB-5)子实体(高原栽培羊肚菌)为主,对比同地域野生样品及湖北栽培的相同品种样品(平原栽培羊肚菌),分析粗蛋白、... 详细信息

为探究高原地区栽培羊肚菌(Morchella spp.)的营养品质,以海拔3 570 m栽培的3个六妹羊肚菌(M. sextelata)品种(M6、HB-8和HB-5)子实体(高原栽培羊肚菌)为主,对比同地域野生样品及湖北栽培的相同品种样品(平原栽培羊肚菌),分析粗蛋白、粗脂肪、粗多糖、灰分、粗纤维、矿质元素、维生素和氨基酸等营养成分的差异。结果显示:当品种相同时,与平原栽培羊肚菌相比,高原栽培羊肚菌的粗蛋白、粗脂肪含量显著上升,灰分含量显著下降,粗纤维含量显著降低(除M6外);K和Fe含量均显著降低;维生素B6、维生素B2、维生素B9、维生素D、维生素E含量显著降低,维生素B1含量显著升高;总氨基酸含量、总必需氨基酸含量及总必需氨基酸占总氨基酸含量均显著上升。高原栽培羊肚菌的必需氨基酸指数(IAAI)明显高于平原栽培羊肚菌,更接近于FAO/WHO标准蛋白,且其生物价(BV)更高。关联性分析表明,羊肚菌中维生素B6、维生素B9(叶酸)、维生素D和维生素E含量与总必需氨基酸含量呈极显著负相关,维生素B6与粗多糖含量存在显著正相关。热图-聚类分析结果表明,高原栽培羊肚菌蛋白营养价值突出,而平原栽培羊肚菌矿质元素含量较高。营养品质综合评价结果表明,高原栽培羊肚菌样品评分结果明显均优于相同品种的平原栽培样品。

关键词：羊肚菌高原营养评价氨基酸评价主成分分析隶属函数

Mechanical Performance and Micro-structure of Pore Steel Slag Block Prepared by Accelerated Carbonation

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Journal of Wuhan University of Technology(Materials Science) 2022年第3期37卷 475-481页

作者： CHEN wanchao LIU Peng WANG Fazhou HU Chuanlin HU Shuguang School of Chemistry Chemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430079China

Steel slag contains a large amount of calcium silicate,which can react with CO_(2)to generate CaCO_(3)and SiO_(2)colloid,thus steel slag may become a cementitious material with a certain *** strength porous steel slag carbonated brick was prepared by adding easily decomposed bicarbonate solid into steel slag as pore-forming agent and then accelerating carbonation.A variety of characterization methods were used to characterize the composition and micro-structure of the *** effects of different pore-forming agent dosage and carbonation time on the properties of pore steel slag blocks were *** results show that the addition of ammonia bicarbonate promotes the nucleation and growth of columnar *** strength of steel slag block mixed with 30%pore forming agent can reach 24.8 MPa after 1 day of carbonation,and then the strength development tends to slow down.

关键词： steel slag accelerating carbonation pore-forming ammonia bicarbonate calcite

2013-2019年柳州市手足口病病原学监测结果及肠道病毒71型VP1基因特征分析

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应用预防医学 2024年第1期30卷 1-4页

作者：杨振兴骆圣梁万超余钧池柳州市疾病预防控制中心广西柳州545007

目的分析2013-2019年柳州市手足口病病原学监测结果,掌握该地区手足口病的病原组成以及肠道病毒71型(EV71)的分子流行病学特征,为当地手足口病的防控提供科学依据。方法采用实时荧光定量聚合酶链式反应(RTPCR)对收集的手足口病病例标... 详细信息

目的分析2013-2019年柳州市手足口病病原学监测结果,掌握该地区手足口病的病原组成以及肠道病毒71型(EV71)的分子流行病学特征,为当地手足口病的防控提供科学依据。方法采用实时荧光定量聚合酶链式反应(RTPCR)对收集的手足口病病例标本进行病原学检测。对重症或死亡病例的病原进行分型检测,选取2017年的5例EV71阳性手足口病重症或死亡病例标本进行VP1基因序列测定和特征分析。结果 2013-2019年柳州市共检测6 038例手足口病病例标本,肠道病毒通用型阳性标本4 210例(69.73%),其中EV71阳性659例(15.65%)、柯萨奇病毒A16型(Cox A16)阳性1 159例(27.53%)、其他肠道病毒阳性2 392例(56.82%)。2013年、2015年、2017年、2019年以其他肠道病毒为主(阳性率均>50.00%),2014年以EV71和其他肠道病毒为主,2016年、2018年以Cox A16和其他肠道病毒为主。2014-2019年重症或死亡病例的病原学分型显示,重症或死亡病例的主要病原是EV71、Cox A16、柯萨奇病毒A6型(Cox A6)、柯萨奇病毒A2型(Cox A2)。2017年该市手足口病重症或死亡病例中分离到的5株EV71毒株的病原基因亚型均为C4a亚型,毒株序列之间的核苷酸同源性为95.20%~100.00%,氨基酸同源性为97.50%~100.00%。结论 2013-2019年柳州市手足口病的优势病原发生了变化,主要病原由EV71逐渐转变为Cox A16和其他肠道病毒。引发重症或死亡病例的病原主要有EV71、Cox A16、Cox A6、Cox A2,EV71的优势基因型为C4a亚型。今后应进一步加强病原监测和相关分子流行病学研究,为落实手足口病综合性防控措施提供依据。

关键词：手足口病病原学监测结果 EV71 VP1基因

One-pot synthesis of silver colloid with body-heat for surface-enhanced Raman spectroscopy detections

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Chinese Chemical Letters 2019年第5期30卷 1027-1030页

作者： wanchao Chen Yan Kang Han Zhang Tianxiong Huang Xin Tao Aiping Lu Yiping Du Shanghai Key Laboratory of Functional Materials Chemistry School of Chemistry&Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Department of Quality Assurance Jiangsu Yangnong Chemical Group Co.Ltd.Yangzhou 225009China

In this study,a convenient method of preparing the substrate is proposed with one-pot synthesis of silver colloid under body heat,and the SERS detection uses the fresh substrate to avoid the drawback of substrates’short life of *** synthesis of silver colloid is carried out in a 10 mL vial by using ascorbic acid as a reductant and trisodium citrate as a *** vial is grasped with the palm of the experimenter for several minutes without *** proposed method is simple,rapid,green energy and *** adjusting the concentration of trisodium citrate,not only the particle size can be controlled from about 110 nm to 50 nm but also the homogeneity of nanoparticles can be *** a SERS substrate,the silver colloid has high batch reproducibility and showed good SERS *** relative standard deviation between different manufacturers is 5.51%when the substrate of silver colloid is used for the detection of rhodamine 6 *** the substrate,the lowest detection concentrations of rhodamine 6 G,crystal violet,enrofloxacin,melamine and leucomalachite green are 1.0×10-8,6.1×10-8,1.4×10-6,7.1×10-5 and 5.1×10-8 mol/L,*** demonstrate that the developed method has the advantage of convenience and high efficiency in the field preparation of reliable SERS substrate.

关键词： One-pot synthesis Silver colloid Substrate Surface-enhanced Raman spectroscopy (SERS)