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Effect of Different Raw Material Processing Methods on the Quality of Apple Distilled Spirits

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Agricultural Science & Technology 2024年第2期25卷 44-50页

作者： YU Zhi-hai PU Jiang-hua BAN Zhen-zhu ZHAO He-xiang HUANG Gui-dan HUANG Xiao-yan SHI Ming-zhi HUANG Ming-zheng school of Food and Pharmaceutical engineering Guizhou Institute of TechnologyGuiyang 550003PRC

In this study,the effect of yeast strains(X16 and RMS2),fruit seed,and pectinase on the quality of apple distilled spirits were investigated with apple as *** results showed that pectinase shortened the fermentation *** strain X16,fruit seed remaining,and pectinase addition groups had higher yields of crude distilled spirits than the strain RMS2,fruit seed removal,and without pectinase groups,*** the first-grade distilled spirits quality,the X16 group had higher content of total acids,total esters,higher alcohols,and alcohol content than the RMS2 group;the group with fruit seeds had higher total acids but lower alcohol content and total esters than the group with fruit seed removal;the group with pectinase addition had higher total acids and alcohol content than the group without pectinase *** the second-grade distilled spirits quality,the X16 group had higher total acids,total esters,and alcohol content than the RMS2 group;the group without fruit seeds had higher alcohol content than the group with fruit seeds;the group with pectinase addition showcased higher total acids but lower alcohol content than the group without pectinase *** summary,yeast strains and pectinase affected the quality of apple distilled spirits,and strain X16 was more suitable for brewing apple distilled *** affected the quality of apple distilled spirits by affecting fermentation rate and temperature.

关键词： Apple distilled spirits Yeast strains Fruit seeds Pectinase

The cause of germination increases the phenolic compound contents of Tartary buckwheat(Fagopyrum tataricum)

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Journal of Future Foods 2022年第4期2卷 372-379页

作者： Yue Chen Yong Zhu Likang Qin school of liquor and Food engineering Guizhou UniversityGuiyang 550025China National and Local Joint engineering Centre for the Development and Utilization Technology of Drug and Food Resources in Southwest China Guizhou UniversityGuiyang 550025China

In order to study the changes and mechanism of phenolic compounds during Tartary buckwheat germination,the dynamic changes of phenolic compounds were analyzed,and the activities of enzymes that regulate phenolic compound biosynthesis and degradation were *** phenolics and total flavonoids presented an interesting dynamic trend with the extension of the germination time,and rutin,gallic acid,chlorogenic acid as well as 2,3,4-trihydroxybenzoic acid contents showed an increasing trend during germination period,the contents were up to(2663.4±61.1),(449.12±5.26),(99.953±7.800)and(50.442±1.477)mg/100 g DW,*** ammonia lyase(PAL)and chalcone isomerase(CHI)are dominant enzymes in regulating phenolic compound biosynthesis,which showed an increasing *** degrading enzyme(RDEs)is the key enzyme in regulating phenolic compound degradation,which showed a decreasing *** results suggested that germination processing increases the phenolic compound contents of Tartary buckwheat,which may be regulated by the activation of PAL,CHI and the inhibition of RDEs.

关键词： Germination Phenolic compounds Rutin degrading enzyme Tartary buckwheat

Recovery of copper from copper slag using a microbial fuel cell and characterization of its electrogenesis

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International Journal of Minerals,Metallurgy and Materials 2017年第6期24卷 621-626页

作者： Wei-ping Liu Xia-fei Yin school of Chemistry and Environment engineering Jiangsu University of Technology school of Environment and Civil engineering Jiangnan University

The microbial fuel cell, which can convert the chemical energy of organic matter into electricity via the catalytic action of microorganisms, is a novel environmentally friendly technology for wastewater treatment and energy generation. The electrical energy generated by the microbial fuel cell can be used as an alternative to a traditional external power source required to extract copper via electrolytic treatment. A dual-chamber microbial fuel cell(DMFC) for the treatment of copper slag sulfuric acid leach liquor was constructed. The electrogenesis performance of the DMFC and its ability to extract copper from the copper slag leachate were investigated. The results demonstrated that the maximum voltage was 540 mV when the DMFC achieved steady-state operation. The removal rate of copper ions was greater than 80.0%, and the maximum value was 92.1%. Moreover, X-ray diffraction and scanning electron microscopy were used to characterize the cathodal products. The results showed that the product deposited onto the cathode was copper and that its morphology was similar to that of the electrolytic copper powder. The DMFC can generate electricity and recover copper from copper slag simultaneously.

关键词： microbial fuel cells copper slag recovery copper electrogenesis

Ti leaching from activated ilmenite–Fe mixture at different milling energy levels

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International Journal of Minerals,Metallurgy and Materials 2018年第11期25卷 1263-1274页

作者： Elham Hosseini Fereshteh Rashchi Abolghasem Ataie school of Metallurgy and Materials engineering College of EngineeringUniversity of Tehran

Mechanical activation processes on ilmenite concentrate were performed in three different energy levels. Iron powder as a reducing agent was added to ilmenite in the milling stage and the mechanically activated mixture was subjected to acid leaching. The leaching experiments were designed using the Taguchi method, and the optimum ranges were obtained. Furthermore, response surface methodology(RSM) was used to optimize the critical parameters in the leaching system to achieve the highest titanium(Ti) leachability. Based on the inductively coupled plasma-optical emission spectrometry(ICP-OES) results, maximum leaching recovery of Ti(80%) was obtained using activated Ti concentrates at a medium activation energy level, which is calculated to be 25.38 kJ/g, using 15 vol% hydrochloric acid(HCl), a temperature of 70°C, leaching time of 3 h, and a solid-to-liquid ratio of 0.05 g×mL^(–1). Intensifying the milling energy from a low to high level led to a decrease in the mean crystallite size and also structure homogenization at the high energy level. According to the transmission electron microscopy(TEM) images, the mean grain size of the ilmenite/Fe nanocomposite was about 30 nm at the medium energy level sample. Finally, solvent extraction by tributyl phosphate(TBP) was performed on the leach liquor to separate dissolved Fe(the major impurity) from Ti, which led to 83% extraction recovery of Ti.

关键词： ilmenite leaching titanium extraction mechanical activation

Overview of yeast environmental stress response pathways and the development of tolerant yeasts

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Systems Microbiology and Biomanufacturing 2022年第2期2卷 232-245页

作者： Nai-Xin Lin Yan Xu Xiao-Wei Yu Lab of brewing Microbiology and Applied Enzymology School of BiotechnologyJiangnan UniversityWuxi 214122China Key Laboratory of Industrial Biotechnology Ministry of EducationSchool of BiotechnologyJiangnan UniversityWuxi 214122China

Yeast is widely used for industrial production of various types of products,such as ethanol and ***,its fermentation efficiency is strongly reduced by harmful environmental ***,harmful environmental stresses damage important cellular components,such as cell wall,cell membrane,proteins,***,these damages cause cellular metabolic disorders or even *** the past decades,there has been a portfolio of studies on the environmental stress tolerance of yeasts,which mainly aimed at cell damages caused by different environmental stresses,different ways to improve yeast environmental stress tolerance or a tolerance mechanism for certain environmental ***,a comprehensive overview of how yeasts respond to environmental stresses is lacking,and the correlation of tolerance mechanism between different environmental stresses is *** this review,we summarized the general damages induced by most of environmental stresses,the existing major mechanisms of environmental stress tolerance from the perspective of key signalling pathways,and the common ways to improve the resistance to environmental stresses in yeast *** tolerance mechanisms of yeast cells to different environmental stresses are diverse,but sometimes they share the same signalling *** use sensors on the cell surface to recognize environmental stresses and transmit signals to the nucleus to cause changes in gene *** summarizing the main signalling pathways,including MAPK pathway,cAMP/PKA pathway,YAP1/SKN7 pathway,it will provide a powerful reference for future efforts to promote yeast environmental stress tolerance and study yeast tolerance mechanisms.

关键词： Yeast Environmental stress Signalling pathway Protein aggregation

Solvothermal synthesis and adsorption performance of layered boehmite using aluminum chloride and high-alumina fly ash

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Chinese Journal of Chemical engineering 2024年第6期70卷 280-290页

作者： Jing Wen Ruirui Yuan Tao Jiang Tangxia Yu Yufan Zhang school of Metallurgy Northeastern UniversityShenyang 110819China Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China Liaoning Key Laboratory for Metallurgical Sensor and Technology Shenyang 110819China

High alumina fly ash(FAHAl)is a kind of bulk solid waste unique to China,whose availability of high-value aluminum and the threat to the environment makes its high-value utilization *** this work,the alumina containing leaching solution obtained from Na_(2)CO_(3) roasting and HCl leaching of FAHAl was used as the mother liquor to prepare layered boehmite in *** preparation process with AlCl_(3) as the raw material was also *** formation process and mechanism of boehmite,the choice of solvent,along with the adsorption capability of Congo red were analyzed by X-ray diffraction,scanning electron microscopy,Fourier transform infrared spectroscopy,Brunauer-Emmett-Teller method and adsorption *** showed that during the preparation of layered boehmite,the precursor Al(OH)_(3) from the reaction of Al^(3+) and OH-is transformed into boehmiteγ-*** existence of ethanol is beneficial to regulate and promote the growth of boehmite crystal *** water and ethanol are mixed with a volume ratio of 2:1 and used as the solvent,the maximum specific surface area of the boehmite is obtained at 135.7 m^(2)·g^(-1),and 99.16%of Congo red can be absorbed after 10 min when AlCl3 is used as a raw *** purified leaching solution is used as the mother liquid,the crystallinity of boehmite decreases slightly when the pH value decreases from 12.5 to *** pH is 11,the removal efficiency of Congo red reaches a maximum of 72.25%.This process not only achieves the extraction of aluminum and high-value utilization of FAHAl but also provides a thought to prepare layered boehmite with adsorption properties.

关键词： High-alumina fly ash Layered boehmite In-situ preparation Solvothermal synthesis Adsorption High-value utilization

Continuous hydrothermal synthesis of AlO(OH)nanorods as a clean flame retardant agent

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Particuology 2015年第5期13卷 66-71页

作者： Sherif Elbasuney school of Chemical engineering Military Technical College

Aluminum-oxide-hydroxide （AIOOH） is a clean and non-toxic flame retardant. There have been many trials for the fabrication of ultrafine AIOOH, Two main approaches exist for nano-AlOOH synthesis： reactive precipitation and batch hydrothermal synthesis, Both approaches are laborious and time consuming with poor control of particle morphology. We report on the novel continuous flow manufacture of AIOOH nanorods with controlled morphology （particle size and shape） by hydrothermal synthesis. AIOOH was harvested from its mother liquor （colloidal solution） using poly（acrylamide-co-acrylic acid） copolymer as a flocculating agent. The developed AIOOH shape and size, crystalline phase, thermal stability, and endothermic heat sink action were investigated by transmission electron microscopy, X-ray diffractome- try, thermogravimetric analysis, and differential scanning calorimetry, respectively. The phase transition of AlOOH to Al2O3 was demonstrated by conducting different X-ray diffractometry scans from 400 to 700℃. These results may provide an option for the continuous synthesis of nano-AIOOH as a clean and non-toxic flame retardant with excellent thermal stability. Consequently, enhanced flammability properties can be achieved at low solids loading.

关键词： Flame retardants Hydrated minerals Hydrothermal synthesis

Aerobic granules cultivated and operated in continuous-flow bioreactor under particle-size selective pressure

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Journal of Environmental Sciences 2014年第11期26卷 2215-2221页

作者： Hongbo Liu Hang Xiao Shuai Huang Huijun Ma He Liu school of Environment and Civil engineering Jiangnan University

A novel method based on the selective pressure of particle size （particle-size cultivation method, PSCM） was developed for the cultivation and operation of aerobic granular sludge in a continuous-flow reactor, and compared with the conventional method based on the selective pressure of settling velocity （settling-velocity cultivation method, SVCM）. Results indicated that aerobic granules could be cultivated in continuous operation mode by this developed method within 14 days. Although in the granulation process, under particle-size selective pressure, mixed liquor suspended solids （MLSS） in the reactor fluctuated greatly and filamentous bacteria dominated the sludge system during the initial operation days, no obvious difference in profile was found between the aerobic granules cultivated by PSCM and SVCM. Moreover, aerobic granules cultivated by PSCM presented larger diameter, lower water content and higher specific rates of nitrification, denitrifieation and phosphorus removal, but lower settling velocity. Under long term operation of more than 30 days, aerobic granules in the continuous-flow reactor could remain stable and obtain good chemical oxygen demand （COD）, NH4^＋-N, total nitrogen （TN） and total phosphorus （TP） removal. The results indicate that PSCM was dependent on the cultivation and maintenance of the stability of aerobic granules in continuous-flow bioreactors.

关键词： Aerobic granular sludge Batch reactor Continuous flow Selective pressure Long-term operation

Recovery of oxalic acid from mother-liquor containing hydrochloric acid and cobalt by solvent extraction with P350

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Transactions of Nonferrous Metals Society of China 2010年第S1期20卷 159-164页

作者：田庆华郭学益李治海 school of Metallurgical Science and engineering Central South University

The solvent of P350 was applied to extract and separate the oxalic acid from the mother-liquor originated from the precipitation of cobalt by oxalic acid,and its extraction mechanism was *** factors,including the concentration of P350, the concentration of hydrochloric acid and the concentration of oxalic acid were investigated to determine the best distribution coefficient of the oxalic *** the case of phase ratio(O/A)at 2.0,the extraction of the oxalic acid was more than 95%and its concentration in the extraction raffinate was lower than 0.004 0 mol/L after six-stage counter-current *** the phase ratio(O/A)of the stripping was at 1.0,the recovery of oxalic acid attained more than 95%after ten-stage counter-current stripping.

关键词： P350 counter-current solvent extraction oxalic acid stripping