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International Journal of Agricultural and Biological Engineering 2015年第2期8卷 145-150页

作者： Taha M.Rababah Muhammad Al-u'datt Mohammad Alhamad Majdi Al-Mahasneh Khalil Ereifej Juan Andrade Bayan Altarifi Ali Almajwal Wade Yang Faculty of Agriculture Jordan University of Science and TechnologyIrbid 22110Jordan Faculty of Engineering Jordan University of Science and TechnologyIrbid 22110Jordan Department of Food Science and Human Nutrition University of Illinois at Urbana-ChampaignUrbana Illinois 61801USA Department of Community Health Sciences College of Applied Medical SciencesKing Saud UniversityRiyadh 11451Saudi Arabia Department of Food Science and Human Nutrition University of FloridaGainesville Florida 32611USA

Four different fresh and dried herb species(sage,thyme,mint and lemonbalm)were evaluated to study the effect of drying process on the total phenolics,antioxidant activity,flavonoid contents and color *** mint had the highest contents of total phenolics(335.4 mg GAE/100 g),whereas lower levels were respectively found in sage(316.4 mg GAE/100 g)followed by lemonbalm(303.2 mg GAE/100 g)and thyme(299.2 mg GAE/100 g).Dry processing significantly decreased the phytochemical contents of all investigated *** to air drying,total phenolics,antioxidant activity and flavonoids content in herbs decreased apparently by oven *** mint had the highest antioxidant activity(87.46%)and flavonoids content(298.51 mg CE/100 g),while the fresh sage,thyme and lemonbalm were found to have antioxidant activity values of 86.81%,86.56% and 85.26%,*** showed that air drying herbs contained more total phenolics,antioxidant activity,and flavonoids than oven drying herbs.

关键词： Herbs drying process antioxidant activity flavonoids

Effects of drying process of Yuanzhi (Radix Palygalae) on its bioactive ingredients

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Journal of Traditional Chinese Medicine 2014年第2期34卷 206-213页

作者： Yingli Wang Yani Li Yuying Zhao Liping Chang Department ofTraditional Chinese Pharmacology Shanxi University of Traditional Chinese Medicine Key Laboratory of Coal Science and Technology Taiyuan University of Technology Department of Traditional Chinese Pharmacology Shanxi University of Traditional Chinese Medicine Institute of Chemical and Biological Technology Taiyuan University of Science and Technology

OBJECTIVE： To study the effects of the drying processing in terms operational parameters on the bio- active constituents of six YuanzhJ （Radix Palygalae） samples across China. METHODS： Six Yuanzhi （Radix Palygalae） samples were investigated using thermogravimetry analysis. The heating courses were set in two ways： the temperature-programmed process from room temperature to 150℃ ,and the constant-temperature course at 50℃, 70℃ and 90℃. RESULTS： The peak temperature of six Yuanzhi （Radix Palygalae） samples ranged from 78℃ to 88℃. The mass loss rate of Yuanzhi （Radix Palygalae） alcohol-soluble extract was significantly increased when heated at 90℃. Four types of bioactive ingredients were detected in volatile oils of Yuanzhi （Radix Palygalae） sample from Shanxi province by Gas Chromatography-mass spectrometry analysis. Fourier Transform Infrared Spectroscopy results showed that the drying temperature exerted a great influence on types and amount of ingredients of Yuanzhi （Radix Palygalae）. The kinetic study showed that the constant-temperature drying process of Yuanzhi Radix Palygalae） samples could be well de- scribed by the Page Model, especially for the drying process at 50~C, in which R2 and SD values were more than 0.98 and less than 0.04, *** drying constant k of three Yuanzhi （Radix Palygalae） samples from Shanxi, Gansu and Shaanxi provinces in China was corresponding to the Arrhenius equation, and their activation energies were 28.07, 2.5.38 and 21.48 kJ/mol, respectively. CONCLUSION： The drying process of Yuanzhi （Radix Palygalae） was very important for bioactive ingredients improvement in Yuanzhi （Radix Palygalae）. Temperature was a thermodynamic property significantly affecting the process.

关键词： Yuanzhi (Radix Palygalae) Chromatography, supercritical fluid drying process Thermogravimetric analysis Alcohol soluble extract Bioactive ingredients

Real-time monitoring system for quality monitoring of jujube slice during drying process

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International Journal of Agricultural and Biological Engineering 2022年第3期15卷 234-241页

作者： Yuxue Cao Xuedong Yao Yongzhen Zang Yubao Niu Hongwei Xiao Huan Liu Rongguang Zhu Xia Zheng Qiang Wang Xiangnan Zhang Shiyu Wei College of Mechanical and Electrical Engineering Shihezi UniversityShihezi 832000XinjiangChina Key Laboratory of Northwest Agricultural Equipment Ministry of Agriculture and Rural AffairsShihezi 832000XinjiangChina Key Laboratory of Modern Agricultural Machinery Corps Shihezi 832000XinjiangChina College of Engineering China Agricultural UniversityBeijing 100083China College of Mechanical Engineering and Automation Northeastern UniversityShenyang 110819China

The real-time monitoring and prediction system for quality attributes of jujube slices during the drying process was designed to solve the problem of destructive and inconvenient of the traditional quality detection method and realize quality online ***,machine vision and automatic weighing were employed to monitor the color and moisture content changes of jujube slices in ***,correlation models between color parameter(a^(*)value)and nutritional quality attributes(vitamin C,reducing sugar)were established to predict vitamin C and reducing sugar content of jujube slices during the drying ***,the upper computer monitoring software was integrated and designed based on LABVIEW virtual instrument,and the real-time monitoring system was tested and *** showed that:the changing trends of color(L^(*),a^(*),and b^(*)values)monitored by the system were basically the same as the results detected by color difference meter,and the average errors of L^(*),a^(*),and b^(*)values were 0.93,0.52,and 0.73,*** average relative error of moisture content between the system monitoring and manual static detection was 0.18%.The average error of vitamin C and reducing sugar content between the system prediction and manual detection were 50 mg/100 g in dry basis and 0.71g/100 g in dry basis,*** current work can provide a useful reference for real-time monitoring of quality attributes of fruits and vegetables during the drying process.

关键词： jujube slice quality attributes real-time monitoring system drying process

Experimental study on shrinkage and rehydration of seed during drying process

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Journal of Southeast University(English Edition) 2003年第4期19卷 343-346页

作者：蔡亮施明恒东南大学动力工程系南京210096

Biomaterial will shrink during the drying process. The characteristics of shrinkage and rehydration of fresh peas were studied. drying curves, shrinkage and rehydration curves of peas without seed coats and whole peas were compared. In addition, different volumetric shrinkage coefficients were obtained and discussed. The results show that seed coats resist moisture movement not only from inside to outside but also from outside to inside during different drying conditions. During a seed’s drying process, the drying curve is similar to the shrinkage curve. The higher the heat flux is, the less drying time is needed, and in the meantime, volume would shrink more and more intensively. Dried media will break easily at high heat flux. When we create a drying regime, both drying speed and the quality of dried media should be considered.

关键词： drying process shrinkage characteristics rehydration characteristics

Feasibility Analysis of drying process Habanero Chili Using a Hybrid-Solar-Fluidized Bed Dryer in Yucatan, M^xico

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Journal of Energy and Power Engineering 2013年第10期7卷 1898-1908页

作者： Elizabeth Cortes Rodriguez Isaac Pilatowsky Figueroa Claudia A. Ruiz Mercad Create Innovate Develop SAdeCV 21 Street No. 83E by 18 and 16th Chuburnd Hidalgo Mdrida 97205. Yucatdn. Mdxico Energy Research Center National Autonomous University of M3xico PO Box 34 Temixco M3xico School of Chemical Engineering University ofYucatn Yueatcn 97203 M3xieo

drying processing of Habanero chili was improved, through solar energy usage. Habanero chili is a notable seasonal product being drying such important for Mexican producers; this process is expensive and wasteful of energy. A feasibility analysis was developed, to determine the market tendency and the optimal drying conditions for redesign Habanero chili drying process, through a hybrid solar-electric energy usage. The new drying process would be held in two stages：（a） an open solar dryer was used; （b） an existing pilot fluidized bed dryer was adapted with a low temperature solar collector for air heating. Habanero chili was dehydrated from 90% to 5% moisture in 10.3 h, with good quality product, available for commercialization. A reduction in the average drying time of 50% was obtained, also, in the energy usage of 77% in the fluidized bed dryer, with an energy saving of 0.52 kg of natural gas per kg of fresh Habanero chili. An innovative sustainable efficient drying process was developed, and will be strategic to expand the market for Habanero chili with low energy cost.

关键词： Hybrid system solar usage Habanero chili feasibility analysis drying process redesign.

Induced Discoloration of Buerger Maple during drying process

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Forestry Studies in China 2004年第2期6卷 50-55页

作者： GaoJianmin ZhangBiguang ChangJianmin CollegeofMaterialSciencesandTechnology BeijingForestryUniversityBeijing100083P.R.China

Buerger maple (Liquidambar formosana Hance) is a kind of wood that is easily discolored. This paper tries to obtain satisfactory color and a broad prospect in the utilization of buerger maple by induced discoloration. The authors analyze the mechanism of induced discoloration of buerger maple based on the analysis of visual physical parameter, the infrared spectrum (IRS) and the scanning electron microscope (SEM) under different drying conditions. The result shows that it is feasible to induce discoloration during the drying process. The wood color tends to be red and fuscous during inducing discoloration of buerger maple. The induced discoloration mechanism is: 1) the high temperature and humidity accelerates the oxidation reaction of polyphenol, leuco-fancy pigment and tannin, which changes the wood color to red; 2) the hydroxy ( OH) is oxidized and the carbonyl ( C O), carboxyl ( COOH), ester and ketone groups form during the high temperature steaming, which results in wood piece discoloration.

关键词： buerger maple drying process induced discoloration

Design of Energy Conservation Chrysanthemum drying Facilities and Study on the drying process

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Design of Energy Conservation Chrysanthemum Drying Facilitie...

Green and Effective Ammonium Carbonate-assisted process for drying Hemicellulose Obtained through Alkali Extraction of Bleached Bamboo Kraft Pulp

作者： Zhang Bailiang Yang Shiguan Yue Jianzhi Henan Agricultural University,Rural Renewable Energy Open Laboratory of the Ministry of Agriculture,Zhengzhou 450002

Chrysanthemum drying facility consists of heating system of flat thermal exchanger and vertical stove,humidity removal system,the main structure of the drying chamber and its internal *** line with the structure features of the drying chamber and in association with the characteristics of dehydration of chrysanthemum,the author proposed the drying process of temperature increase at different stages to remove *** demonstrated that the drying chamber has high thermal efficiency,the temperature distribution in the chamber is even and the construction cost is *** chrysanthemum dried through this process can reach high quality grade standards in terms of color,fragrance,shape and taste.

关键词： chrysanthemum design drying process

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Paper And Biomaterials 2021年第1期6卷 1-10页

作者： Xiaoqi Gong Zongwei Zhang Yonghao Ni Xinhua Ouyang Lihui Chen Liulian Huang Huichao Hu College of Material Engineering Fujian Agriculture and Forestry UniversityFuzhouFujian Province350002China Department of Chemical Engineering University of New BrunswickFrederictonNew BrunswickE3B 5A3Canada

Hemicellulose has a wide range of applications,including that as an emulsifier for the food industry and raw material for the synthesis of bioethanol/biochemicals and biodegradable *** is usually present as a spent liquor,such as the prehydrolysis liquor of the prehydrolysis kraft dissolving pulp production process and the alkali extraction liquor of the cold caustic extraction of pulp *** to its dilute nature,hemicellulose needs to be dried for practical utilization,and this is *** this study,cellulose and hemicellulose in a bleached bamboo kraft pulp were separated using an alkali extraction *** obtained from the extraction liquor was dried by an ammonium carbonate-assisted drying *** effects of drying time and drying temperature were *** of the hemicellulose obtained by the ammonium carbonate-assisted drying process was similar to that of original hemicellulose,as revealed by detailed Fourier transform infrared and X-ray diffraction *** novel drying method was more energy efficient and required a shorter drying time than the conventional freeze drying method,and the excellent solubility in alkaline solutions favored the chemical modification of *** dried hemicellulose can be used as a renewable raw material for the preparation of hydrogels and other substances such as bioethanol/biochemicals and biodegradable films.

关键词： bamboo kraft pulp hemicellulose alkali extraction ammonium carbonate drying process dissolving pulp

Intensification of the Banana drying processes by Using EFL Electromagnetic Waves

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World Journal of Engineering and Technology 2016年第2期4卷 281-289页

作者： Arif Memmedov Teymuraz Abbasov Mustafa Şeker Department of Electric-Electronic Engineering Faculty of Engineering University of Inonu Malatya Turkey

drying of the banana in the hot water has a negative impact on the quality of the product and drying effect. The purposes of this study are increasing the drying rate, using the relatively low temperature to improve the quality (40℃, 50℃ and 60℃) and investigate the use of electromagnetic waves to increase the drying speed. Therefore, experiments are performed using 5 kHz,10 kHz and 15 kHz low frequency electromagnetic waves in the air velocity values of 0.5 m/s, 1 m/s, 1.5 m/s and 2 m/s and 40℃, 50℃, 60℃ centigrade degrees of air blast in a special compartment. Mathematical model of the drying process has been created as using the electrical circuits methods and experimental results. As a result, a simple equation describing the drying process has been obtained. Nonlinear expression of the diffusion coefficient for a different situation in this equation has been identified for the first time. The obtained theoretical results and experimental results have been provided a good agreement. This study is considered to be useful for all studies in the drying area.

关键词： Electromagnetic Wave drying process Heat and Mass Transfer Frequency Banana drying

Effect of Different drying processes on Active Ingredients of Rheum officinale Baill.

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Medicinal Plant 2020年第6期11卷 31-35页

作者： Yiming DING Tong SHANG Yue SHI Boyang PENG Ting ZHAO Yuan ZHANG Li LI Shengli WEI School of Chinese Pharmacy Beijing University of Chinese Medicine Beijing 102488 China Engineering Research Center of Good Agricultural Practice for Chinese Crude Drugs Ministry of Education Beijing 100102 China Beijing Chinese Medicine Hospital Affiliated to Capital Medical University Beijing 100010 China Beijing Institute of Chinese Medicine Beijing 100035 China

[Objectives]To determine the drying process of different functional rhubarbs.[Methods]The contents of tannins,bianthrone,free anthraquinones and combined anthraquinones in medicinal rhubarb were determined by *** results were analyzed by two-way analysis of variance.[Results]Under different drying conditions,the contents of tannins,bianthrone,free anthraquinones and combined anthraquinones in medicinal rhubarb were significantly *** the tannins content as the index,the optimum drying condition of the rhizome is 1 cm thick,dried at 60℃,the root is cut 1 cm thick,and dried at 30℃;the bianthrone content is used as an indicator,the rhizome is optimally *** condition is to cut 1 cm thick,dry at 60℃,the root is cut to 5 cm thick,and dried at 40℃;the free anthraquinones content is used as an index,and the optimum drying condition of the rhizome is 3 cm thick and dried at 50℃.The root is cut to a thickness of 3 cm and dried at 30℃.The combine anthraquinones content is used as an *** optimum drying conditions for the rhizome are 5 cm thick,dried at 40℃,and the root is cut to 5 cm thick and dried at 70℃.[Conclusions]Different functional components of rhubarb have different directional processing *** drying process can reduce the drying temperature or increase the thickness of the slice,and the directional processing of the diarrhea-type rhubarb can be *** drying process can be carried out by increasing the drying temperature or reducing the thickness of the slice directed processing of heat-clearing and purging-fire rhubarb.

关键词： Rheum officinale Baill. drying process Active ingredient