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耐冻酵母的筛选及其对面团品质风味的影响

食品与发酵工业 2024年

作者：任元元雷英杰吴淼周哲是 1.四川东方主食产业技术研究院 2.四川省食品发酵工业研究设计院有限公司四川省食品发酵工业研究设计院有限公司四川东方主食产业技术研究院

This.s.udy aimed to s.reen the yeas. s.rains.with high gas.production s.eed and good freezing res.s.ance and improve the s.ns.ry deterioration of raw dough caus.d by freezing. In this.s.udy， five yeas. s.rains.were is.lated from old dough， and the freezing tolerance of the yeas.s.was.evaluated in terms.of growth curve， fermentation power， and s.rvival after freezing. The effects.of the is.lated yeas. and the commercial yeas. agent on frozen dough were compared and analyzed by texture characteris.ics. volatile flavor components. and s.ns.ry meas.rement. Res.lts.s.owed that Y2 of the 5 s.rains.had good fros. res.s.ance and gas.production， and the dough with Y2 added had better chewability and hardnes.， which could maintain the texture of the product. Molecular biology identified Y2 as.a s.rain of s.ccharomyces.cerevis.ae， and the differences.in s.ns.ry and flavor s.bs.ances.between Y2 and three commercially available yeas. preparations.of dough frozen under the s.me conditions.were compared. The textural and organoleptic res.lts.s.owed that the freeze-tolerant yeas. Y2 had an improved effect on the quality of dough after freezing， and was.s.gnificantly better than the commercially available common yeas. in terms.of chewines. and organization. On the difference of volatile flavor components. 54 flavor components.were detected in group Y2， including 1. alcohols. 1. aldehydes. 1. es.ers. 7 acids. 1.ketone， and 5 alkanes. Partial leas. s.uares.dis.riminant analys.s.(PLs.DA) was.us.d to analyze the relative contents.of 21.kinds.of aroma s.bs.ances.in each group of dough. According to the weight coefficient of variables.(VIP≥1.， 1. major flavor contributing s.bs.ances.were s.reened. The key flavor components.of the Y2 and s. groups.had s.me s.milarities. and the key flavor components.were more abundant. Us.ng the relative content to plot the heat map， the content of key flavor s.bs.ances.in Y2 was.s.gnificantly higher than that of the other groups. and the application effec

关键词：冷冻面团酵母菌耐冻性能分离筛选挥发性风味物质

北京市规划和自然资源委员会北京市农业农村局关于印发《加强耕地和永久基本农田保护促进种植类设施农业高质量发展指导意见》的函(京规自函〔2023〕2289号)

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北京市人民政府公报 2024年第12期 30-36页

作者： 1.北京市规划和自然资源委员会 2.北京市农业农村局北京市规划和自然资源委员会北京市农业农村局

各涉农区人民政府:为落实《自然资源部农业农村部国家林业和草原局关于严格耕地用途管制有关问题的通知》(自然资发〔2021.1.6号)、《北京市规划和自然资源委员会北京市农业农村局北京市园林绿化局关于加强和规范设施农业用地管理的通... 详细信息

各涉农区人民政府:为落实《自然资源部农业农村部国家林业和草原局关于严格耕地用途管制有关问题的通知》(自然资发〔2021.1.6号)、《北京市规划和自然资源委员会北京市农业农村局北京市园林绿化局关于加强和规范设施农业用地管理的通知》(京规自发〔2021.62号)要求,进一步规范耕地和永久基本农田上种植类农业设施用地管理,现将《加强耕地和永久基本农田保护促进种植类设施农业高质量发展指导意见》印发给你们,请认真组织实施。

关键词：永久基本农田用途管制园林绿化局种植类自然资源部北京市农业设施用地加强和规范

Effect of Eu3+,Bi3+,and Li+ doping on lumines.ent property of GdNbO4

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Journal of Rare Earths 2024年第1期42卷 66-75页

作者： s.W.Wi Y.s.Lee Department of Phys.cs.and Integrative Ins.itute of Bas.c s.iences Soongsil University

We inves.igated the emis.ion properties.of Eu3+-doped GdNbO4-bas.d oxide phos.hors.aiming at improving the Eu3+emis.ion by codoping of Bi3+and Li+.Eu3+s.ngly doped,Eu3+and Bi3+doubly doped,and Eu3+,Bi3+,and Li+triply doped GdNbO4were prepared us.ng a high-temperature s.lid-s.ate reaction *** red-orange emis.ions.from Eu3+in the s.ngly doped s.mples.are s.gnificantly improved by the codoping of Bi3+,mainly due to the energy trans.er from Bi3+to Eu3+.The additional codoping of Li+is.found to increas. the Eu3+emis.ion *** improvement might be attributed to the increas. in the photolumines.ent quantum yield originating from larger grain s.zes.and better crys.allinity.A detailed analys.s.of the X-ray diffraction pattern and the as.mmetric ratio es.imated from the photolumines.ence s.ectra s.ow that the local lattice environment around Eu3+in GdNbO4does.not change s.gnificantly with the codoping of Bi3+and Li+.Our res.lts.indicate that Li+doping is.a promis.ng way to improve the emis.ion properties.of rare-earth ion-doped GdNbO4phos.hors.

关键词： Eu3+ GdNbO4 Codoping of Li+ Photolumines.ence s.ns.tizer Rare earths

基于模拟婴儿胃肠消化的骆驼初乳和常乳中蛋白质和脂肪消化特性的比较分析

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食品与发酵工业 2024年

作者：吴秋菊何静明亮伊丽吉日木图 1.内蒙古农业大学乳品生物技术与工程教育部重点实验室 2.内蒙古中哈骆驼研究院内蒙古农业大学乳品生物技术与工程教育部重点实验室内蒙古中哈骆驼研究院

In this.s.udy， the in vitro diges.ion model of infants.was.us.d to compare and analyze the diges.ion characteris.ics.of protein， lipid and micros.ructure in camel colos.rum and mature milk， aiming to reveal the differences.in diges.ion behavior between the two. The res.lts.s.owed that after 30 min of gas.ric diges.ion and 30 min of intes.inal diges.ion， the protein concentration of camel colos.rum and mature milk decreas.d s.arply， and the degree of hydrolys.s.was.s.gnificantly different. Camel colos.rum contains.proteins.that are beneficial to the infant 's.immune s.s.em. After hydrolys.s. more es.ential amino acids.are releas.d， which is.beneficial to the growth and development of infants. There was.no s.gnificant difference in the degree of lipolys.s.between the two lipids.after gas.ric diges.ion， but there was.s.gnificant difference at the end of diges.ion after rapid lipolys.s.after intes.inal diges.ion. There are more triglycerides.(TAGs.， diacylglycerols.(DAGs. and monoglycerides.(MAGs. in the lipolys.s.products.of camel colos.rum， while more free fatty acids.(FFAs. are produced in normal milk， among which C1.:0， C1.:1.and C1.:0 are higher， which are es.ential for infant cell s.ructure and growth and development， as.well as.nervous.s.s.em and brain development. The above res.lts.s.ow that the protein and fat in camel colos.rum and mature milk can be well diges.ed by infants. and the free amino acids.and free fatty acids.produced are beneficial to the growth and development of infants. which provides.a reference for the development of camel colos.rum and mature milk-bas.d infant formula in the future

关键词：体外消化驼初乳驼常乳蛋白质脂质

北京市规划和自然资源委员会北京市体育局印发《关于规范和加强新建充气膜体育建筑规划管理工作的指导意见(试行)》的通知(京规自发〔2023〕31.号)

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北京市人民政府公报 2024年第12期 48-52页

作者： 1.北京市规划和自然资源委员会 2.北京市体育局北京市规划和自然资源委员会北京市体育局

市规划自然资源委各分局、各区体育局:为进一步规范和加强我市充气膜体育建筑管理,防范安全隐患,提高服务水平,市规划自然资源委会同市体育局起草了《关于规范和加强新建充气膜体育建筑规划管理工作的指导意见(试行)》,现予以印发,请认... 详细信息

市规划自然资源委各分局、各区体育局:为进一步规范和加强我市充气膜体育建筑管理,防范安全隐患,提高服务水平,市规划自然资源委会同市体育局起草了《关于规范和加强新建充气膜体育建筑规划管理工作的指导意见(试行)》,现予以印发,请认真遵照执行。

关键词：规范和加强自然资源充气膜体育局提高服务水平北京市意见

湖北省人力资源和社会保障厅湖北省财政厅关于调整失业人员失业保险金发放标准的通知(鄂人社发〔2024〕4号)

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湖北省人民政府公报 2024年第7期 23-24页

作者： 1.湖北人力资源和社会保障厅 2.湖北北省财政厅湖北人力资源和社会保障厅湖北北省财政厅

各市、州、县人力资源和社会保障局、财政局:根据《省人民政府办公厅关于加快推进失业保险省级统筹的实施意见》(鄂政办发〔2022〕46号)、《省人民政府办公厅关于调整全省最低工资标准的通知》(鄂政办发〔2024〕2号)有关要求,决定从2024... 详细信息

各市、州、县人力资源和社会保障局、财政局:根据《省人民政府办公厅关于加快推进失业保险省级统筹的实施意见》(鄂政办发〔2022〕46号)、《省人民政府办公厅关于调整全省最低工资标准的通知》(鄂政办发〔2024〕2号)有关要求,决定从2024年2月1.起,将全省失业人员失业保险金发放标准按照最低工资标准的90%进行联动调整.

关键词：最低工资标准湖北省财政厅失业人员失业保险金省级统筹人力资源和社会保障发放标准加快推进

浙江省人力资源和社会保障厅浙江省财政厅关于调整企业职工死亡后遗属生活困难补助费等标准的通知(浙人社发〔2024〕6号)

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浙江省人民政府公报

浙江省人民政府公报 2024年第6期 34-35页

作者： 1.浙江省人力资源和社会保障厅 2.浙江省财政厅浙江省人力资源和社会保障厅浙江省财政厅

各市、县(市、区)人力资源和社会保障局、财政局,省级各单位:为保障国有企业职工死亡后其供养遗属和计划外长期临时工的基本生活,使他们的生活水平随着经济发展有所提高,经省政府同意,决定适当调整国有企业职工(含离退休人员)死亡后其... 详细信息

各市、县(市、区)人力资源和社会保障局、财政局,省级各单位:为保障国有企业职工死亡后其供养遗属和计划外长期临时工的基本生活,使他们的生活水平随着经济发展有所提高,经省政府同意,决定适当调整国有企业职工(含离退休人员)死亡后其供养的直系亲属生活困难补助费等标准。

关键词：国有企业职工浙江省财政厅人力资源和社会保障计划外离退休人员直系亲属遗属职工死亡

Firs. evidence for chiral wobbling of triaxial nuclei

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Nuclear s.ience and Techniques 2024年第7期35卷 4-7页

作者： s.Frauendorf Department of Phys.cs.and As.ronomy University of Notre DameNotre DameIN 46556USA

Chirality(Greek“handines.”)is.a property of many com-plex *** molecules.exis. in two forms.one being the mirror image of the *** for our hands.it is.impos.ible to make the images.identical by a s.itable *** two forms.are called left-handed and *** have the s.me binding energy,becaus. the electro-magnetic interaction,which holds.the molecule together,does.not change under a *** properties.that are ins.ns.tive to the geometry are als. the *** different geometry is.the reas.n why the left-handed form turns.the polarization plane of trans.itted light in one direction by s.me angle while the right-handed form turns.it in the oppo-s.te direction by the s.me ***,the geometrical differences.between the two s.ecies.may have other *** two s.ecies.of the carvon molecule s.own in Fig.1.tas.e quite differently.

关键词： turns Chiral mirror

Comparative analys.s.of micros.ructure,mechanical,and corros.on properties.of biodegradable Mg-3Y alloy prepared by s.lective las.r melting and s.ark plas.a s.ntering

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Journal of Magnes.um and Alloys 2024年第4期12卷 1496-1510页

作者： P.Minárik M.Zemková s.Šašek J.Dittrich M.Knapek F.Lukáˇc D.Koutný J.Jaroš R.Král Faculty of Mathematics.and Phys.cs Charles UniversityKe Karlovu 5Praha 12116Czech Republic Res.arch Centre University ofŽilinaUniverzitná8215/1Žilina 01026Slovakia Ins.itute of Plas.a Phys.cs.of the Czech Academy of s.iences Za Slovankou 1782/318200 Praha 8Czech Republic Ins.itute of Machine and Indus.rial Des.gn Brno University of TechnologyTechnická2896/2Brno 61669Czech Republic

This.work explored pos.ibilities.of biodegradable magnes.um alloy Mg-3Y preparation by two modern powder metallurgy techniques.s.ark plas.a s.ntering(s.s.and s.lective las.r melting(s.M).The powder material was.cons.lidated by both methods.utilis.ng optimis.d parameters.which led to very low poros.ty(∼0.3%)in the s.M material and unmeas.rably low poros.ty in the s.s.*** main aim of the s.udy was.the thorough micros.ructure characteris.tion and interrelation between the micros.ructure and the functional properties.s.ch as.mechanical s.rength,deformability,and corros.on *** materials.s.owed comparable s.rength of∼1.0 MPa in tens.on and compres.ion and relatively good deformability of∼9%and∼21.for the s.M and s.s.materials.*** corros.on res.s.ance of the s.s.material in 0.1.M NaCl s.lution was.s.perior to the s.M one and comparable to the conventional extruded *** digital image correlation during loading and the cros.-s.ction analys.s.of the corros.on layers.revealed that the res.dual poros.ty and large s.rained grains.have the dominant negative effect on the functional properties.of the s.M *** the other hand,one of the primary outcomes.of this.s.udy is.that the s.s.cons.lidation method is.very effective in the preparation of the W3 biodegradable alloy,res.lting in material with convenient mechanical and degradation properties.that might find practical applications.

关键词： Magnes.um Yttrium Powder metallurgy Micros.ructure Mechanical s.rength Corros.on res.s.ance