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DETERMINATION　OF　THERMODYNAMIC　AND　KINETIC　PARAMETERS　OF　LARGE　SCALE　CHROMATOGRAPHIC　SEPARATION　OF　sugar　AND　reducing　sugar

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Chinese Journal of Reactive Polymers 1996年第1期5卷 84-91页

作者： Li Zhong Shu Wenli Liao Yongzhong Huang Peiquan Xu Qingcai Research Institute of Chemical Engineering South China UniVersity of Technology GuangZhou 510641

The parameter identification model of largr scale chromatography separation process is proposed. The Phase equilibrium constants and lumped mass transfer coefficients of sugar and reducing sugar adsorption on D1, D2 and D3 resins as well as the axial dispersion coefficients of the fluid through packed columns are determined by means of the pulse-response experiment technique with an inert substance as a tracer and the chromatography measuring technique. The elution curve calculated from these parameters is good agreement with the experimental elution curve. The sensitivity analysis of these parameters is carried out, and the ressult shows that the elation curves of chromatography separation are more sensitive to the variations Of the Phase equilibrium relationship than to the variation of the axial dispersion as well as the lumped mass transfer coefficients.

关键词： Chromatographic Separation Resins Parameter Determination sugar reducing sugar

Evaluation of Uncertainty in Determination of reducing sugar Content in sugarcane

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Agricultural Biotechnology 2015年第4期4卷 72-76页

作者： Jie LIAO Feiyan YAN Leixing MO Tianshun WANG Yu YA Yegeng FAN Fang HUANG Bo LIN Li TANG Agricultural Product Quality Safety and Detection Technology Research Institute Guangxi Academy of Agriculture Sciences Quality Inspection and Test Center for sugarcane and Its Products Ministry of Agriculture

[ Objective] This study aimed to establish an effective method for evaluating uncertainty in determination of reducing sugar content in sugarcane with Lane-Ernon method. [ Method] Based on analysis of the main sources of uncertainty in determination of reducing sugar content in sugarcane and mathematical model construction, combined uncertainty and expanded uncertainty were determined to establish the method for evaluation of uncertainty in determination. [ Result] Among uncertainties in determination of reducing sugar content in sugarcane with Lane-Ernon method, the greatest uncertainty was introduced by duplicate determination. According to results of statistical analysis, the expanded uncertainty in determination of reducing sugar content was 0.012%. [ Conclusion] This study provided theo- retical reference for evaluation of uncertainty in determination of reducing sugar content in sugarcane.

关键词： sugarcane quality testing reducing sugar Lane-Ernon method Error Uncertainty

Study on the character of chitinase produced by Trichoderma spp. with measuring reducing sugar

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浙江大学学报(农业与生命科学版) 2004年第4期 80-80页

作者： LIU Kai-qi1, XIANG Mei-mei1, LIU Ren1, ZENG Yong-san1, LI Hua2, JIANG Xin-yin2, ZHANG Yue-li2(1. Dept. of Resource and Environmental Science,Zhongkai Agrotechnical College,Guangzhou 510225, China 2. College of Plant Protection,Shandong Agric. Univ., Tai'an 271018, China)

A trusty and intuitionistic method for screening chitinase produced by Trichoderma spp. was developed. 38 isolates of Trichoderma spp. were cultured in liquid medium with chitin or colloidal chitin as the sole carbon source for 4 days. The supernatant of the fermented broth was mixed with colloidal chitin and heated in water-bath at 37℃ for 30 min, then 3,5-dinitrosalicylic acid reagent (DNS) was added to the mixture, and let them react for 10 min in water-bath. According to the different colour of the mixture, the isolates of Trichoderma spp. which can produce chitinase could be screened.

关键词： Trichoderma chitinase reducing sugar

Research on the Influence of Acid Concentration on reducing sugar in Straw Waste

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International Journal of Technology Management 2015年第3期 28-31页

作者： Wenxia YANG Weifang University of Science and Technology ShouguangShandong262700China

This paper studies the effect of reducing sugar concentration, reducing sugar yield and byproducts furfural concentration that generate by straw under the condition of acid concentration and flow rate in the gradient temperature hydrolysis process （60℃-230℃）, we can conclude that reducing sugar yield is highest when the concentration of sulfuric acid is 1%, the velocity of reaction liquid is 25mL/min, at the highest concentration of wheat straw yield of reducing sugar up to 32.9g/L, the reducing sugar yield was 60.8%. At this point the furfural concentration is lower than 1.0g/L, but in the entire gradient heating process, reducing sugar concentration peak of furfural concentration peak appears in the temperature lower, can realize the separation of the reducing sugar and furfural good, reduce the inhibition of fermentation by- products such follow-up treatment process.

关键词： Straw Hydrothermal Gradient temperature reducing sugar

Effect of Rare Earth on Physiological-Chemical Characteristics and Its Growth of Aloe in Tissue Culture

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Journal of Rare Earths 2005年第S1期23卷 522-525页

作者：张子学胡能兵刘侠许海平 Anhui Science and Technology University Fengyang 233100 China

In adopting tissue culture, effects of rare earth on Physiological and chemical characteristics, proliferation and rootage in aloe were studied. The results indicate that suitable concentration treatment of rare earth increases content of reducing sugar and protein, enhances activity intensity of superoxide dismutase (SOD), peroxidase (POD) isozymes and stripes of POD isozymes in the leaves. It also increases rate of proliferation and rootage respectively. The appropriate concentration of rare earth is 20～40 mg·L -1 in proliferation and rootage of aloe.

关键词： aloe reducing sugar soluble protein SOD POD isozyme tissue culture rare earths

Impact of double alkaline peroxide pretreatment on enzymatic hydrolysis of palm fibre

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Carbon Resources Conversion 2018年第2期1卷 147-152页

作者： Shengqiang Chang Wangliang Li Yuming Zhang CAS Key Laboratory of Green Process and Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical&Environmental Engineering China University of Mining&Technology(Beijing)Beijing 100083China State Key Laboratory of Heavy Oil Processing China University of Petroleum-BeijingBeijing 102249China

A double pretreatment was developed to improve the efficiency of enzymatic hydrolysis and to increase the sugars production from palm fibre in batch and fed-batch *** alkaline peroxide pretreatment using NaOH-H_(2)O_(2)solution,rigid structure of palm fibre was broken and partial of the hemicelluloses and lignin were *** with cellulase Accellerase^(■)1500,when using the conjunction of Accellerase^(■)1500 and Optimash BG,the conversion ratio increased from 35.9%to 45.0%and the reducing sugar yield increased from 245 mg/g substrate to 307 mg/g *** further increase the hydrolysis efficiency,double pretreatment with NaOH-H_(2)O_(2)solution was used to treat the hydrolysized ***,the hydrolysis ratio reached 93%and reducing sugar yield was 752 mg/g ***-batch enzymatic hydrolysis was carried out with 7%(w/v)solids loading and 0.3 mL/g ***,7%solids were fed consecutively at 12 h,24 h,36 h and 48 *** 144 h,the final concentration of reducing sugar reached 214.0 g/L and total biomass conversion ratio was 75.23%.

关键词： Cellulase Palm fibre reducing sugar Lignin Alkaline peroxidepretreatment

Optimization of sugar production from Durian seeds via alkaline hydrolysis for second-generation bioethanol production

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Clean Energy 2021年第2期5卷 375-386页

作者： Theofany Harley Chriswardana Yheni Mulyaningsih Yhana Mulyaningsih Aditiya Harjon Bahar Teuku Meurah Indra Riayatsyah Mechanical Engineering Department Faculty of Engineering and TechnologySampoerna UniversityJl.Raya Pasar MingguKav.16Jakarta12780Indonesia Mechanical Engineering Department Institut Teknologi SumateraLampung35365Indonesia

As one way to eliminate the issues found in the preceding generation,feedstock exploration in second-generation bioethanol production remains an issue,especially for a tropical country such as *** exotic fruit by-products,durian holds a promising perspective that rests on its abundance,superb carbohydrate content and limited usage until *** work presents the first-ever utilization of durian seeds for sugar production under optimized conditions through alkaline hydrolysis.A simple form of sugar was extracted by varying four parameters,namely substrate loading,NaOH concentration,hydrolysis time and hydrolysis *** surface methodology based on the Box-Behnken design was employed to outline the most optimum parameter *** of variance revealed that the quadratic model fit the data appropriately with the order of significance as substrate loading>hydrolysis time>NaOH concentration>hydrolysis *** optimized conditions for reducing sugar yield,as high as 2.140 g/L,corresponded to<50 g/L substrate loading,0.522 M NaOH,60 minutes of hydrolysis time and 80oC hydrolysis *** possible ethanol content of 1.094 g/L was also expected under optimized conditions,demonstrating great potential in second-generation bioethanol production.

关键词： second-generation bioethanol durian seeds alkaline hydrolysis optimization response surface methodology(RSM) Box-Behnken design(BBD) reducing sugar ethanol content

Assessment of Physico-Chemical and Microbial Quality of sugarcane Juice Sold by Street Vendors in Three Regions of Bangladesh

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Food and Nutrition Sciences 2024年第4期15卷 263-276页

作者： Nargis Akter Khan Md. Murtaja Reza Linkon Munni Akter Md. Alamgir Hossain Md. Mahbubur Rahman Tayeba Khan Md. Abdul Alim Md. Esrafil Department of Food Technology and Nutritional Science Mawlana Bhashani Science and Technology University Tangail Bangladesh Department of Biotechnology and Genetic Engineering Mawlana Bhashani Science and Technology University Tangail Bangladesh

sugar cane juice is a popular refreshing drink in most part of Bangladesh. It has great taste and health benefits;also it is available most of the public places at reasonable prices which consumed by road side customers including general public, shopping personals, tourists, students. In our country, street vendors crushing sugarcane between roller crusher and sold without any heat treatment or preservative, also served with or without added ice and lemon juice. The study aimed to identify and compare the physico-chemical and microbial quality of sugarcane juice. The chemical qualities of juices including moisture, PH, ash, total soluble solid, total sugar, reducing sugar and titrable acidity were found slightly different in Mymensingh, Gazipur and Narayangonj areas. The highest and lowest value of moisture, ash, PH, total soluble solids, total sugar, reducing sugar and titrable acidity were found in 84.33% - 79.26% (Gazipur-Mymensingh), 0.57% - 0.04% (Mymensingh-Gazipur), 5.9 - 2.9 (Gazipur-Narayangonj), 17.48% - 4.98% (Mymensingh-Narayangonj), 21.9% - 6.56% (Mymensingh-Gazipur), 3.7 - 2.1 (Gazipur-Mymensingh) and 0.523% - 0.007% (Narayangonj-Gazipur) respectively. For microbiological analysis, the total viable count of sugar cane juice in Mymensingh, Gazipur and Narayangonj were ranged from 0.6 × 105 - 43.6 × 105 cfu/ml, 4.6 × 105 - 21.6 × 105 cfu/ml and 3.6 × 105 - 36.6 × 105 cfu/ml respectively, where the permitted value is 1.0 × 104 cfu/ml, whereas the total coliform count was ranged from 0.4 × 105 - 6.4 × 105 cfu/ml, 0.6 × 105 - 8.4 × 105 cfu/ml and 0.00 - 8.4 × 105 cfu/ml, where the permitted value is 100 cfu/ml and total fungal count was ranged from 5.5 × 105 - 56.5 × 105 cfu/ml, 21.5 × 105 - 54.5 × 105 cfu/ml and 32.5 × 105 - 68.5 × 105 cfu/

关键词： sugarcane Street Vendors Microbial Quality reducing sugar

ENZYME ACTIVITIES IN RELATION TO sugar ACCUMULATION IN TOMATO

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ENZYME ACTIVITIES IN RELATION TO SUGAR ACCUMULATION IN TOMAT...