速冻汤圆专用糯米核心指标的探究
作者:
党允卓;周坚;吕庆云;陈轩;周康
期刊:
食品科技 ,2020年(01):251-256 ISSN:1005-9989
作者机构:
武汉轻工大学食品科学与工程学院,湖北武汉430023;武汉轻工大学数学与计算机学院,湖北武汉430023;[周康; 吕庆云; 党允卓; 陈轩; 周坚] 武汉轻工大学
关键词:
糯米;速冻汤圆;汤圆品质;关键性指标
摘要:
为确定适宜速冻汤圆加工专用糯米的关键性指标及指标范围,以22种糯米为原料制备速冻汤圆,探讨糯米主要成分、糊化特性对汤圆质构品质的影响,并利用主成分分析建立汤圆综合品质评价模型,再通过逐步回归分析筛选出影响汤圆综合品质的关键性指标,结合聚类分析得到适宜加工汤圆的原料糯米关键性指标的范围.结果 表明:糯米的水分含量、脂肪含量、峰值黏度、崩解值、回生值、最低黏度、最终黏度、热焓与汤圆的质构品质存在显著(P<0.05)相关性.影响汤圆综合品质的关键性指标为糯米原料的直链淀粉含量和脂肪含量,适宜加工速冻汤圆的原料糯米的直链淀粉含量应大于2.52%,脂肪含量应小于1.03%.
语种:
中文
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不同处理方式及粒径对小麦麸皮理化性质的影响
作者:
吴凡;李合;蔡红燕;沈汪洋;王展;...
期刊:
食品科技 ,2020年45(2):190-196 ISSN:1005-9989
作者机构:
武汉轻工大学食品科学与工程学院,湖北武汉430023;大宗粮油精深加工省部共建教育部重点实验室,湖北武汉430023;[蔡红燕; 吴凡; 李合; 沈汪洋; 陈轩; 周坚; 王展] 武汉轻工大学
关键词:
小麦麸皮;处理方式;粒径;基本成分;理化性质
摘要:
以小麦麸皮为原料,研究未处理、挤压、微波和蒸汽4种处理方式及粒径对小麦麸皮基本成分、吸水性、水溶性、持油性、膨胀力和色泽等理化性质的影响。结果表明:挤压处理对麦麸的灰分、粗脂肪和粗蛋白没有显著性影响,但会使总膳食纤维的含量提高,淀粉含量降低。挤压、蒸汽和微波处理均会使麦麸的平均粒度减小。挤压、蒸汽和微波处理对麦麸吸水性和膨胀力没有显著性影响;挤压处理对麦麸的水溶性和持油性没有显著影响,蒸汽和微波处理对其有显著性的影响。4种处理方式的麦麸吸水性先不变后随着粒径的增大而增大,水溶性随着粒径的增大而减小,持油性和膨胀力随着粒径的增大而增大。挤压处理对麦麸色泽的影响最强,蒸汽处理次之,微波处理最弱。
语种:
中文
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压榨型干米粉专用米关键指标的研究
作者:
苟青松;吴凡;王展;沈汪洋;陈轩;...
期刊:
食品科技 ,2020年45(2):170-176 ISSN:1005-9989
作者机构:
武汉轻工大学食品科学与工程学院,湖北武汉430023;大宗粮油精深加工省部共建教育部重点实验室,湖北武汉430023;[吴凡; 苟青松; 沈汪洋; 陈轩; 周坚; 王展] 武汉轻工大学
关键词:
专用米;干米粉;关键指标;主要成分;糊化指标
摘要:
为确定压榨型干米粉专用米的特征指标,文章以17种籼米为原料,运用相关分析、主成分分析、聚类分析以及逐步回归分析法探讨大米原料品质和糊化特性对干米粉食用品质和质构品质的影响.结果 表明:大米原料中的直链淀粉含量、淀粉含量、脂肪含量、脂肪酸值,糊化特性中的最低黏度、最终黏度、崩解值、回生值、胶稠度,与干米粉的蒸煮品质和质构品质存在显著(P<0.05)相关性;其中影响米粉综合品质的关键性指标为直链淀粉含量、最终黏度和胶稠度;聚类分析得出的适宜加工压榨型干米粉的原料大米的直链淀粉含量应大于22%,淀粉的最终黏度应大于3963 cP,胶稠度应小于46 mm.
语种:
中文
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不同辅料添加量对挤压重组米的消化特性的影响
作者:
蔡乔宇;徐晓茹;周坚;陈轩;吕庆云
期刊:
食品工业科技 ,2020年41(16):16-20 ISSN:1002-0306
作者机构:
武汉轻工大学食品学院,武汉430023;[徐晓茹; 吕庆云; 蔡乔宇; 陈轩; 周坚] 武汉轻工大学
关键词:
重组米;挤压;色度;抑酶;血糖生成指数;体外消化
摘要:
本研究以籼米为主料,在主料中分别添加芦丁、富铬酵母等辅料制备挤压重组米,以市售普通籼米和籼米挤压重组米作为对照,探讨了不同辅料添加量挤压重组米色泽的变化,对α-葡萄糖苷酶和α-淀粉酶的抑制作用,和对挤压重组米的血糖生成指数和体外消化作用的影响.结果 表明,芦丁或富铬酵母添加量大于0.05%时,重组米的色泽与普通籼米和籼米挤压重组米有显著差异.芦丁添加量为0.35%时对α-葡萄糖苷酶和α-淀粉酶的抑制率最大,分别为38.54%和62.09%;富铬酵母添加量0.09%时对α-葡萄糖苷酶和α-淀粉酶的抑制率最大,分别为17.93%和40.14%.0.35%芦丁和0.09%富铬酵母的挤压重组米的血糖生成指数(Glycemic index,GI)分别为77.02和78.29,与普通籼米GI值接近.添加0.35%的芦丁或添加任何比例的富铬酵母的快消化淀粉(rapidly digestible starch,RDS)、慢消化淀粉(slowly digestible starch,SDS)和抗性淀粉(resistant starch,RS)均与空白挤压米有显著差异,说明添加0.35%的芦丁或添加富铬酵母均能改善重组米在体外的消化情况,减缓血糖体外的吸收.
语种:
中文
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紫外照射对留胚米稳定性的影响
作者:
姜蓓;吕庆云;周坚;金刚强;陈轩
期刊:
中国粮油学报 ,2020年35(11):1-6 ISSN:1003-0174
作者机构:
[Jiang B.; 陈轩] School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, 430023, China;Key Laboratory of the Deep Processing of Bulk Grain and Oil Authorized by Ministry of Education, Wuhan, 430023, China;[姜蓓] Quzhou Kumisainuo Food Machinery Manufacturing Corporation, Quzhou, 324000, China;[Lü Q.; 周坚] School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, 430023, China<&wdkj&>Key Laboratory of the Deep Processing of Bulk Grain and Oil Authorized by Ministry of Education, Wuhan, 430023, China
关键词:
留胚米;紫外照射;脂肪酶;碎米率
摘要:
为了提高留胚米的稳定性,采用紫外照射对留胚米进行稳定化处理。采用单因素实验及响应面分析研究紫外照射对留胚米脂肪酶灭活率的影响,同时考察留胚米水分损失率、碎米率和爆腰率的变化。结果表明:紫外照射最佳条件是照射时间11.50 min,照射距离为4.5 cm,初始含水量13%,此时脂肪酶灭活率66.73%、且碎米率增加0.12%、爆腰率增加1.63%、水分散失率增加0.38%,处于可以接受范围内,因此可以选为紫外照射稳定留胚米的工艺参数。
语种:
中文
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The Addition of α-cyclodextrin and γ-cyclodextrin Affect Quality of Dough and Prebaked Bread During Frozen Storage
作者:
Zhou, Jianjun;Ke, Yuan;Barba, Francisco J.;Xiao, Shensheng;Hu, Xianqin;...
期刊:
Foods ,2019年8(5):174- ISSN:2304-8158
通讯作者:
Wang, Xuedong;Liu, Gang
作者机构:
[Liu, Gang; Wang, Xuedong; Liu, G; Lyu, Qingyun; Ke, Yuan; Qin, Xinguang; Zhou, Jianjun; Ding, Wenping; Xiao, Shensheng] Wuhan Polytech Univ, Minist Educ, Key Lab Deep Proc Major Grain & Oil, Wuhan 430023, Hubei, Peoples R China.;[Liu, Gang; Wang, Xuedong; Liu, G; Lyu, Qingyun; Ke, Yuan; Qin, Xinguang; Zhou, Jianjun; Ding, Wenping; Xiao, Shensheng] Wuhan Polytech Univ, Sch Food Sci & Engn, Wuhan 430023, Hubei, Peoples R China.;[Liu, Gang; Wang, Xuedong; Liu, G; Lyu, Qingyun; Ke, Yuan; Qin, Xinguang; Zhou, Jianjun; Ding, Wenping; Xiao, Shensheng] Wuhan Polytech Univ, Hubei Key Lab Proc & Transformat Agr Prod, Wuhan 430023, Hubei, Peoples R China.;[Barba, Francisco J.] Univ Valencia, Nutr & Food Sci Area, Prevent Med & Publ Hlth, Food Sci Toxicol & Forens Med Dept,Fac Pharm, Avda Vicent Andres Estelles S-N, E-46100 Valencia, Spain.;[Hu, Xianqin] Wuhan Polytech Univ, Engn Res Ctr Feed Prot Resources Agr By Prod, Freshwater Aquaculture Collaborat Innovat Ctr Hub, Hubei Key Lab Anim Nutr & Feed Sci,Minist Educ, Wuhan 430023, Hubei, Peoples R China.
通讯机构:
[Wang, XD; Liu, G] W;Wuhan Polytech Univ, Minist Educ, Key Lab Deep Proc Major Grain & Oil, Wuhan 430023, Hubei, Peoples R China.;Wuhan Polytech Univ, Sch Food Sci & Engn, Wuhan 430023, Hubei, Peoples R China.;Wuhan Polytech Univ, Hubei Key Lab Proc & Transformat Agr Prod, Wuhan 430023, Hubei, Peoples R China.
关键词:
cyclodextrin;prebaked bread;texture;mixolab;DSC
摘要:
The effects of the addition of 0–3.0 wt% α-cyclodextrin (α-CD) and γ-cyclodextrin (γ-CD) on the quality of wheat flour as well as the texture and the aging of prebaked bread were evaluated. The addition of α-CD and γ-CD increased the ability of wheat flour to absorb water and shortened the times of dough formation and stabilization. Amylase activity slightly increased after using 2.0 and 3.0 wt% of α-CD and γ-CD, respectively. Moreover, the addition of α-CD and γ-CD increased the fermentation height and gas retention ability of dough. Dough samples containing 2.0 wt% α-CD and 3.0 wt% γ-CD showed the highest fermentation heights and gas retention volumes, respectively. Dough gas production increased with the addition of γ-CD. Gas production by dough samples containing more than 2.0 wt% α-CD exceeded that by samples in the control group. The results of the texture crumb of bread and specific volume tests revealed that the addition of 2.0 wt% α-CD and 3.0 wt% γ-CD reduced bread hardness and increased bread elasticity, resilience, and specific volume. The optimal α-CD and γ-CD contents were identified as 2.0 wt% and 3.0 wt%, respectively. The addition of 2.0 wt% α-CD and 3.0 wt% γ-CD delayed the aging of prebaked bread and reduced the hardness of prebaked bread during different weeks of storage, which may be due to decreasing the melting enthalpy of starch crystals. This work elucidated the mechanisms underlying the effects of CD addition on prebaked bread quality.
语种:
英文
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军用方便米饭的配方及食用品质
作者:
陈轩;向莉;马晓灵;周坚
期刊:
食品工业 ,2019年(06):41-46 ISSN:1004-471X
作者机构:
1. 武汉轻工大学食品科学与工程学院;2. 三峡食品药品检验检测中心
关键词:
军用方便米饭;食用品质;配方;回生值
摘要:
以粳米粉为主料,辅以植物原料如葛粉、藕粉、红薯淀粉等,通过双螺杆挤压技术制得军用方便米饭。以回生值为主要评价指标优化原料配比,并对其食用品质进行研究。结果表明:葛粉6%、藕粉5%、红薯淀粉8%为最佳原料配比,且从质构和RVA检测结果来看,最优配比有较好的食用品质;从感官和理化特性方面对空白对照组、军用方便米饭、东北大米、市售方便米饭的食用品质进行比较,军用方便米饭的食用品质与东北大米较为接近。
语种:
中文
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黑糯米米糠中水不溶膳食纤维功能特性研究
作者:
曾蓓蓓;常锦玉;吕庆云;周坚
期刊:
中国食物与营养 ,2019年25(6):51-55 ISSN:1006-9577
作者机构:
武汉轻工大学食品科学与工程学院,武汉,430023;[常锦玉; 吕庆云; 曾蓓蓓; 周坚] 武汉轻工大学
关键词:
黑糯米米糠;水不溶膳食纤维;功能特性
摘要:
为提高黑糯米的综合利用价值,对黑糯米米糠中水不溶膳食纤维的功能特性进行分析,结果表明:每克黑糯米中水不溶膳食纤维(IDF)可吸附4. 03 g水,持油力和膨胀力分别为3. 04 g/g、1. 79 mL/g;其阳离子交换能力为0. 83 mmol/L,是白糯米IDF的1. 66倍; pH对亚硝酸盐吸附量基本没有影响,在pH=2. 0和pH=7. 0的条件下,黑糯米IDF的亚硝酸盐吸附量分别为348. 59、346. 96μg/g;黑糯米IDF在pH=7. 0时胆固醇吸附量为12. 63 mg/g,优于模拟胃酸环境下(pH=2. 0)的吸附效果;黑糯米IDF在中性条件下(pH=7. 0)对重金属Cd2+体外吸附率为89. 52μg/g,远远高于模拟胃酸环境(pH=2. 0)时的2. 40μg/g。
语种:
中文
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挤压前、后大米淀粉理化性质的变化
作者:
徐晓茹;周坚;吕庆云;陈轩
期刊:
中国食品学报 ,2019年19(12):187-194 ISSN:1009-7848
通讯作者:
Lü, Qingyun(qingy2001@163.com)
作者机构:
[徐晓茹; 周坚; 吕庆云; 陈轩] College of Food Science and Technology, Wuhan Polytechnic University, Wuhan;430023, China;[徐晓茹; 周坚; 吕庆云; 陈轩] 430023, China
关键词:
挤压;大米淀粉;分子结构;晶体结构
摘要:
本文研究了挤压对原料中淀粉重均分子质量、直链淀粉百分含量、结晶结构、糊化和热力学性质等的影响。结果表明,挤压处理后,淀粉中淀粉颗粒结构被破坏,淀粉发生降解,直链淀粉含量提高,重均分子质量降低;糊化、热力学性质及质构特性均发生变化。挤压后淀粉的结晶结构也由A型转变为V型。不同原料成分的挤压样品的糊化和质构特性以及直链淀粉含量均有明显差别。另外,紫外光谱扫描和荧光光谱扫描结果显示:挤压处理会使蛋白质肽键发生伸展,导致基团周围微环境发生变化。
语种:
中文
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Effect of -Cyclodextrin on the Quality of Wheat Flour Dough and Prebaked Bread
作者:
Zhou, Jianjun;Yang, Heng;Qin, Xinguang;Hu, Xianqin;Liu, Gang* ;...
期刊:
Food Biophysics ,2019年14(2):173-181 ISSN:1557-1858
通讯作者:
Liu, Gang;Wang, Xuedong
作者机构:
[Liu, Gang; Liu, G; Wang, Xuedong; Yang, Heng; Qin, Xinguang; Zhou, Jianjun] Wuhan Polytech Univ, Key Lab Deep Proc Major Grain & Oil, Minist Educ, Wuhan, Hubei, Peoples R China.;[Liu, Gang; Liu, G; Wang, Xuedong; Yang, Heng; Qin, Xinguang; Zhou, Jianjun] Wuhan Polytech Univ, Coll Food Sci & Engn, Wuhan 430023, Hubei, Peoples R China.;[Liu, Gang; Liu, G; Wang, Xuedong; Yang, Heng; Qin, Xinguang; Zhou, Jianjun] Wuhan Polytech Univ, Hubei Key Lab Proc & Transformat Agr Prod, Wuhan 430023, Hubei, Peoples R China.;[Hu, Xianqin] Wuhan Polytech Univ, Engn Res Ctr Feed Prot Resources Agr By Prod, Hubei Key Lab Anim Nutr & Feed Sci, Minist Educ,Freshwater Aquaculture Collaborat Inn, Wuhan 430023, Hubei, Peoples R China.
通讯机构:
[Liu, G; Wang, XD] W;Wuhan Polytech Univ, Key Lab Deep Proc Major Grain & Oil, Minist Educ, Wuhan, Hubei, Peoples R China.;Wuhan Polytech Univ, Coll Food Sci & Engn, Wuhan 430023, Hubei, Peoples R China.;Wuhan Polytech Univ, Hubei Key Lab Proc & Transformat Agr Prod, Wuhan 430023, Hubei, Peoples R China.
关键词:
Fermentation rheometer;FTIR;Prebaked frozen bread;SEM;Wheat flour dough;β-CD
摘要:
This work investigated the effects of the addition of different concentrations (0–3.0wt%) of β-cyclodextrin (β-CD) on the properties of wheat dough and prebaked bread. Dough tensile test results and scanning electron microscopy revealed that the addition of 0.5–1.5wt% β-CD enhanced dough tensile strength and promoted gluten formation. The addition of 2.0–3.0wt% β-CD, however, failed to improve gluten network formation. Fourier transform infrared spectroscopy showed that the α-helix-to-β-sheet ratios of dough samples increased as β-CD content increased. This result indicated that the protein secondary structure of the dough had changed. Fermentation rheometry illustrated that dough fermentation height, gas production volume, and gas-holding capacity increased with the addition of 0–1.5wt% β-CD. Dough fermentation capacity decreased when the addition of β-CD exceeded 2.0wt%. The effect of β-CD on the quality of prebaked frozen bread was also studied. The results of texture profile analysis indicated that the addition of 1.5wt% β-CD could reduce bread hardness and increase bread crumb elasticity and resilience. The results of the C-cell test further demonstrated that the addition of 1.5wt% β-CD could increase stomatal number and decrease pore number and pore wall thickness. These characteristics suggested that the addition of β-CD improved bread structure. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
语种:
英文
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军用方便米饭的回生特性研究
作者:
陈轩;马晓灵;向莉;周坚
期刊:
食品科技 ,2018年(8):158-163 ISSN:1005-9989
作者机构:
武汉轻工大学食品科学与工程学院;[向莉] 三峡食品药品检验检测中心;[马晓灵; 陈轩; 周坚] 武汉轻工大学
关键词:
军用方便米饭;回生特性;差示扫描量热仪;扫描电子显微镜;X-射线衍射仪
摘要:
以粳米粉为主要原料,葛粉、藕粉及红薯淀粉作为辅料,利用挤压法制备军用方便米饭,采用扫描电子显微镜、差示扫描量热仪及X-射线衍射仪对米粒结构进行表征,探究军用方便米饭样品的回生特性,并与粳米样品及空白组样品进行了对照比较.结果表明:军用方便米样品饭呈多孔状,结构较为疏松,复水性好.与粳米样品中淀粉A型晶型结构存在差异,军用方便米饭样品和空白组样品中淀粉晶型为V型,方便米饭的衍射峰面积及强度均弱于空白组.粳米样品、军用米饭样品和空白组样品的Avrami参数n均小于1,表明晶核主要在淀粉回生早期形成,并以一次成核方式结晶.挤压降低了淀粉重结晶成核和生长速率,军用方便米饭的结晶生长速率高于空白组.研究结果说明,挤压可抑制淀粉回生,对军用方便米饭中淀粉回生的抑制效果优于空白组.
语种:
中文
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黄酒专用米的研究进展
作者:
蔡乔宇;周坚;缪礼鸿;陈轩
期刊:
中国酿造 ,2018年37(6):1-5 ISSN:0254-5071
作者机构:
武汉轻工大学食品科学与工程学院,湖北武汉,430023;武汉轻工大学生物制药与工程学院,湖北武汉,430023;[缪礼鸿; 蔡乔宇; 陈轩; 周坚] 武汉轻工大学
关键词:
黄酒专用米;黄酒;研究进展
摘要:
黄酒是我国的国酒,原料的品质决定了黄酒的品质。该文对黄酒酿造用米的专用化、黄酒的制作工艺和黄酒品质评价进行了综述,分析了大米原料与黄酒品质之间的相关性,最后阐述了黄酒专用米对稻米加工业和黄酒制造业的重要意义,并对黄酒专用米的前景进行了展望。
语种:
中文
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双螺杆挤压法制备马铃薯方便米饭的研究
作者:
蔡乔宇;陈轩;周梦舟;周坚
期刊:
粮食与饲料工业 ,2018年(6):15-22 ISSN:1003-6202
作者机构:
武汉轻工大学食品科学与工程学院,湖北武汉,430023;湖北工业大学生物工程与食品学院,湖北武汉,430068;[周梦舟] 湖北工业大学;[蔡乔宇; 陈轩; 周坚] 武汉轻工大学
关键词:
双螺杆挤压;马铃薯粉;碎米;方便米饭;工艺优化;品质评价
摘要:
以碎米和马铃薯粉为原料,经过科学的配比研制出马铃薯方便米饭.固定螺杆转速300 r/min,进料速度0.4 t/h,挤压机Ⅰ区温度60℃,挤压机Ⅲ区温度70℃,采用单因素和正交试验的方法,综合考察马铃薯方便米饭制备的关键工艺技术对挤压马铃薯方便米饭品质的影响,得到相关参数为:马铃薯全粉添加比例为50%,调质后的水分为30%,挤压机Ⅱ区温度为80℃.通过感官评定马铃薯方便米饭的食用方式,发现煮饭口感最好,浸泡次之,蒸饭最差;浸泡时用开水浸泡9 min后即可接近市售米饭的食用品质,体现了马铃薯方便米饭的方便性.
语种:
中文
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重组米品质特性影响因素研究
作者:
徐晓茹;周坚;吕庆云;汪韬
期刊:
食品科技 ,2018年43(4):165-170 ISSN:1005-9989
作者机构:
武汉轻工大学食品科学与工程学院,武汉,430023;[徐晓茹; 汪韬; 吕庆云; 周坚] 武汉轻工大学
关键词:
重组米;挤压;相关性;质构
摘要:
通过分析不同挤压参数制得的13种挤压重组米样品和普通籼米,探讨挤压样品的糊化度、质构特性、膨化度、水溶性、吸水性等挤压特性之间的相关性。结果表明,膨化度与弹性(r=—0.583)、回复性(r=—0.757)呈显著负相关;吸水性与回复性呈显著正相关(r=0.613);容重与胶黏性呈显著正相关(r=0.657);糊化度与膨化度、吸水性、容重也有一定相关性;黏度与水分含量呈明显正相关(r=0.920),与碘蓝值也有一定的负相关(r=—0.303)。雷达图显示出重组米样品相比普通籼米的糊化度、硬度、内聚性、胶黏性、回复性和耐咀性均升高。
语种:
中文
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糯米制品专用米研究进展
作者:
党允卓;吕庆云;周坚
期刊:
粮食与饲料工业 ,2018年(6):23-27 ISSN:1003-6202
作者机构:
武汉轻工大学食品科学与工程学院,湖北 武汉,430023;武汉轻工大学食品科学与工程学院,湖北 武汉 430023;大宗粮油精深加工省部共建教育部重点实验室,湖北武汉 430023;[吕庆云; 党允卓; 周坚] 武汉轻工大学
关键词:
糯米制品;专用米;食用品质;品质评价体系
摘要:
糯米在我国的种植和食用都拥有非常悠久的历史,糯米制品的产业也在迅速发展。介绍了常见的糯米制品及其加工现状,着重分析了糯米制品在生产和食用过程中存在的一些食用品质的问题,并且对糯米制品原料的品质评价体系的建立进行了探讨。
语种:
中文
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Selective hydrothermal degradation of cellulose to formic acid in alkaline solutions
作者:
Wang, Guozhen;Meng, Yan;Zhou, Jinping* ;Zhang, Lina*
期刊:
Cellulose ,2018年25(10):5659-5668 ISSN:0969-0239
通讯作者:
Zhou, Jinping;Zhang, Lina
作者机构:
[Zhou, Jinping; Wang, Guozhen; Meng, Yan; Zhang, Lina; Zhou, JP] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China.;[Zhang, Lina] Guangxi Univ, Sch Chem & Chem Engn, Nanning 530004, Peoples R China.;[Wang, Guozhen] Wuhan Polytech Univ, Coll Food Sci & Engn, Key Lab Deep Proc Major Grain & Oil, Minist Educ,Hubei Key Lab Proc & Transformat Agr, Wuhan 430023, Hubei, Peoples R China.
通讯机构:
[Zhou, JP; Zhang, LN] W;Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China.
关键词:
Cellulose degradation;NaOH/ZnO aqueous solution;Selectivity of oxidative reaction;Organic acids
摘要:
Abstract: Herein, one-step conversion of cellulose dissolved in 1.75molL−1 NaOH/0.074molL−1 ZnO aqueous solution to organic acids was realized through a hydrothermal degradation without heterogeneous catalyst. The effects of solvent, the concentrations of NaOH and ZnO, O2 pressure, temperature and the reaction time on the yield of organic acids were investigated and discussed. The components of the degraded products were characterized with total organic carbon and high performance liquid chromatography. The results indicated that cellulose was depolymerized successfully to organic acids. Formic acid as the predominant species with 80.0% yield was obtained at the optimal conditions (150°C, 2h, 3.0MPa O2), which was much higher than those reported in literatures. The small amount of ZnO in the solvent played an important role not only to promote the cellulose dissolution, but also to accelerate its oxidative degradation. The main features of this one-step degradation of cellulose were the green solvent, pre-dissolution of catalyst, and high selectivity. This work opened up a new avenue for the conversion of cellulose to organic acids under mild conditions. Graphical abstract: The oxidative degradation of cellulose dissolved in NaOH/ZnO aqueous solution into organic acids was conducted under pressed O2 without heterogeneous catalyst. The yield of FA which was the main product reached up to 80.0%.[Figure not available: see fulltext.]. © 2018, Springer Nature B.V.
语种:
英文
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米粉专用米研究进展
作者:
苟青松;周梦舟;周坚;王展
期刊:
粮食与油脂 ,2018年31(9):4-6 ISSN:1008-9578
作者机构:
武汉轻工大学食品科学与工程学院,湖北武汉,430023;湖北工业大学生物工程与食品学院,湖北武汉,430023;武汉轻工大学食品科学与工程学院,湖北武汉 430023;大宗粮油精深加工省部共建教育部重点实验室,湖北武汉 430023;[周梦舟] 湖北工业大学
关键词:
米粉;专用米;特性
摘要:
综述了米粉专用米的国内外研究现状、原料大米品质与米粉品质之间的关系以及原料大米选取时需要考虑的因素。为研究米粉专用米的选取提供一定的参考,并为制定相关标准提供依据。
语种:
中文
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Protective effects of various ratios of DHA/EPA supplementation on high-fat diet-induced liver damage in mice
作者:
Shang, Tingting;Liu, Liang;Zhou, Jia;Zhang, Mingzhen;Hu, Qinling;...
期刊:
Lipids in Health and Disease ,2017年16(1):1-13 ISSN:1476-511X
通讯作者:
Gong, Zhiyong
作者机构:
[Shang, Tingting; Zhou, Jia; Gong, Zhiyong; Liu, Liang; Zhang, Mingzhen; Wu, Yongning; Hu, Qinling; Fang, Min] Wuhan Polytech Univ, Coll Food Sci & Engn, 68 XueFuNan Rd, Wuhan 430023, Peoples R China.;[Wu, Yongning] China Natl Ctr Food Safety Risk Assessment, Beijing 100022, Peoples R China.;[Yao, Ping] Huazhong Univ Sci & Technol, Sch Publ Hlth, Dept Nutr & Food Hyg, Tongji Med Coll, Wuhan 430030, Peoples R China.
通讯机构:
[Gong, Zhiyong] W;Wuhan Polytech Univ, Coll Food Sci & Engn, 68 XueFuNan Rd, Wuhan 430023, Peoples R China.
关键词:
N-3 PUFA;DHA/EPA;Lipid metabolism;Liver damage;Fra1;C-Jun;C-Fos
摘要:
Background: A sedentary lifestyle and poor diet are risk factors for the progression of non-alcoholic fatty liver disease. However, the pathogenesis of hepatic lipid accumulation is not completely understood. Therefore, the present study explored the effects of dietary supplementation of various ratios of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) on a high-fat diet-induced lipid metabolism disorder and the concurrent liver damage. Methods: Using high-fat diet-fed C57BL/6 J mice as the animal model, diets of various ratios of DHA/EPA (2:1, 1:1, and 1:2) with an n-6/n-3 ratio of 4:1 were prepared using fish and algae oils enriched in DHA and/or EPA and sunflower seed oils to a small extent instead of the high-fat diet. Results: Significantly decreased hepatic lipid deposition, body weight, serum lipid profile, inflammatory reactions, lipid peroxidation, and expression of adipogenesis-related proteins and inflammatory factors were observed for mice that were on a diet supplemented with DHA/EPA compared to those in the high-fat control group. The DHA/EPA 1:2 group showed lower serum triglycerides (TG), total cholesterol (TC), and low-density lipoprotein-cholesterol levels, lower SREBP-1C, FAS, and ACC-1 relative mRNA expression, and higher Fra1 mRNA expression, with higher relative mRNA expression of enzymes such as AMPK, PPARα, and HSL observed in the DHA/EPA 1:1 group. Lower liver TC and TG levels and higher superoxide dismutase levels were found in the DHA/EPA 2:1 group. Nonetheless, no other notable effects were observed on the biomarkers mentioned above in the groups treated with DHA/EPA compared with the DHA group. Conclusions: The results showed that supplementation with a lower DHA/EPA ratio seems to be more effective at alleviating high-fat diet-induced liver damage in mice, and a DHA/EPA ratio of 1:2 mitigated inflammatory risk factors. These effects of n-3 polyunsaturated fatty acids (PUFA) on lipid metabolism may be linked to the upregulation of Fra1 and attenuated activity of c-Jun and c-Fos, thus ultimately reducing the severity of the lipid metabolism disorder and liver damage to some extent. © 2017 The Author(s).
语种:
英文
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糙米质构重组米糊化度的快速检测
作者:
孙威;晏梦婷;李芳;沈汪洋;周坚;...
期刊:
粮食与饲料工业 ,2016年(3):26-30 ISSN:1003-6202
作者机构:
武汉轻工大学食品科学与工程学院;农产品加工湖北省协同创新中心;[赵永武] 武汉中粮食品科技有限公司;[高虹] 湖北省农业科学院农产品加工与核农技术研究所;[晏梦婷; 沈汪洋; 李芳; 孙威; 周坚] 武汉轻工大学
关键词:
糙米;糊化度;检测方法;快速黏度分析;差示扫描量热法
摘要:
探讨了糙米质构重组米糊化度的快速检测方法。主要检测了糙米质构重组米的糊化度、RVA糊化参数及DSC的热焓参数,建立了酶解法糊化度与RVA 8个特征值及DSC 4个特征值的相关性,得出了数学模型和线性回归方程。通过比较可以得出,DSC方法预测糙米质构重组米的糊化度效果更好。该方法简单、快速,能准确预测糙米质构重组米的糊化度,为快速预测糙米质构重组米的糊化度提供了参考。
语种:
中文
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限制性糊化糙米粉的挤压工艺参数研究
作者:
郭吉;周坚;沈汪洋
期刊:
粮食与饲料工业 ,2016年(3):23-25 ISSN:1003-6202
作者机构:
武汉轻工大学食品科学与工程学院,湖北 武汉,430023;武汉轻工大学食品科学与工程学院,湖北 武汉 430023;农产品加工湖北省协同创新中心,湖北 武汉 430023;[沈汪洋; 郭吉; 周坚] 武汉轻工大学
关键词:
双螺杆挤压机;限制性糊化;糊化度;工艺参数
摘要:
以双螺杆挤压机为实验设备,以糙米为主要原料,在重组糙米成型的前提下,研究了物料水分、机筒温度、螺杆转速对重组糙米糊化度的影响。利用单因素试验和正交试验确定限制性糊化糙米重组米的最佳工艺参数为:机筒温度110℃、物料水分35%、螺杆转速140 r/min。在该工艺条件下,重组糙米糊化度为89.79%。
语种:
中文
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