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Yuan X.,China Grain Reserves Corporation
Journal of Chinese Institute of Food Science and Technology | Year: 2013

Ferulic acid sugar esters showed noticeable biological activities, such as antioxidant activity, reducing blood sugar, and improving the micro environment in intestinal tract, which deserve further research. The distribution and structure of ferulic acid sugar esters were introduced in this paper. The preparation methods and nutritional values of ferulic acid sugar esters were presented. The application prospects in medicine, food, and cosmetics were analyzed. Source

Han J.H.,Jiangsu University | Wu Q.F.,Jiangsu University | Xu B.,Jiangsu University | Zhou S.L.,China Grain Reserves Corporation | Ding F.,Jiangsu University
Quality Assurance and Safety of Crops and Foods | Year: 2016

Subcritical butane extraction (SBE) was used to extract oil from soybean germ and was compared with conventional n-hexane extraction (CHE) and supercritical CO2 extraction (SC-CO2E) methods. By analysing the extraction yield, composition of fatty acids and characteristic functional contents such as tocopherol, phytosterols and phospholipids in soybean germ oil (SGO), the selective extraction characteristics of subcritical butane were evaluated. The results indicate that compared to CHE and SC-CO2E, SBE had no significant difference on oil yield, fatty acid compositions, acid value and peroxide value of SGO. However, the contents of phytosterol and tocopherol in the oil extracted by SBE (2,772.9 and 188.9 mg/100 g) were evidently higher than those extracted by CHE (1,437.2 and 171.3 mg/100 g), with both being lower than those of supercritical CO2 extracted oil (3,982.4 and 227.6 mg/100 g). And, the content of phospholipids in SGO extracted by SBE (23.92 mg/g) was lower than that extracted CHE (38.47 mg/g). In conclusion, SBE was able to retain the bioactive compounds in SGO when compared with CHE. © 2015 Wageningen Academic Publishers. Source

Li H.,Shanghai JiaoTong University | Li Y.,Shanghai JiaoTong University | Dai Y.,Shanghai JiaoTong University | Gao S.,China Grain Reserves Corporation | And 2 more authors.
Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery | Year: 2010

A hybrid solar drying system assisted by heat pump for grain in-store drying was developed. The system is composed of solar air collector, heat pump and stir machine for grain. The experimental study was conducted for maize drying. The results indicated that average thermal efficiency of the air collector is up to 63% and COP of the heat pump can reach 5.4. The combined system can supply adequate and stable thermal energy. The effect of drying is obvious. Drying time is reduced and energy consumption is low. Besides, the uniformity of moist content is improved. Utilized for maize in-store drying, the system can reduce the moisture content of maize in the granary with the characteristics of safety, energy saving and better effect. Source

Yue H.,University of Sichuan | Yue H.,China Grain Reserves Corporation | He J.,University of Sichuan | He J.,Chengdu Drainage Co. | And 2 more authors.
Analytical Methods | Year: 2013

A simple and low-cost hydrogen peroxide (H2O2) biosensor has been developed using a Yucca filamentosa plant leaf membrane in conjunction with an oxygen (O2) sensor. The leaf membrane contains hydrogen peroxidase which can catalytically decompose H2O2 to produce O2. The response rate was faster for a Yucca membrane (t90 response time is ≈14 s) than a Yucca membrane with the O 2-permeable membrane (t90 response time is ≈200 s) and the sensitivity was much improved. The biosensor exhibited an excellent linear calibration range from 85 μM to 3.75 mM H2O2 (correlation coefficient r = 0.9999) with a detection limit of 15.1 μM; repeatability (1.024%, n = 10). The effects of pH and temperature on the response of the H2O2 biosensor have been studied in detail. The working life-time of the biosensor was good as it retains 86.7% of its initial sensitivity at 25 °C even after 2350 determinations of H 2O2 sample solutions. It has been successfully applied to the determination of H2O2 concentration in some commercial samples. © 2013 The Royal Society of Chemistry. Source

Li H.,Shanghai JiaoTong University | Dai Y.,Shanghai JiaoTong University | Dai J.,Shanghai JiaoTong University | Wang X.,China Grain Reserves Corporation | Wei L.,Henan Weilai Machine Engineering Co.
Frontiers of Energy and Power Engineering in China | Year: 2010

For grain in-store drying, a solar assisted drying process has been developed, which consists of a set including a solar-assisted heat pump, a ventilation system, a grain stirrer, etc. In this way, low power consumption, short cycle time and water content uniformity can be achieved in comparison with the conventional method. A solar-assisted heat pump drying system has been designed and manufactured for a practical granary, and the energy consumption performance of the unit is analyzed. The analysis result shows that the solar fraction of the unit is higher than 20%, the coefficient of performance about system (COPS) is 5.19, and the specific moisture extraction rate (SMER) can reach 3.05 kg/kWh. © 2010 Higher Education Press and Springer Berlin Heidelberg. Source

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