National Engineering Laboratory for Rice and Byproducts Processing

Changsha, China

National Engineering Laboratory for Rice and Byproducts Processing

Changsha, China
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Cao Q.,National Engineering Laboratory for Rice and Byproducts Processing | Cao Q.,Central South University of forestry and Technology
Proceedings - 2016 International Conference on Smart City and Systems Engineering, ICSCSE 2016 | Year: 2016

With the worldwide research on natural product activity, new technologies and methods have been added to the screening of natural products. This effectively improves the efficiency and precision of the screening of the active ingredients of natural products. Artificial intelligence is a new technology which is currently in the field of computer, the basic principle of artificial intelligence technology was applied to the screening of active components of natural products in the paper, which has laid a solid theoretical foundation and support for strong screening active components in natural products. Different from the previous research methods, the method based on artificial intelligence not only promotes the role of biological activity, but also effectively shortens the time of discovery of active compounds[1]. The modern intelligent algorithm used in this article, and the full algorithm of support vector machine (SVM) classification performance and excellent precision of the genetic algorithm (GA) with high robustness of the comprehensive, premise analysis of the active components of natural products in quantity, build the basic framework of intelligent quantitative evaluation. We combined with the actual situation to verify the practicality of the mode in the subsequent learning process, which confirmed the feasibility of the model, to provide a basis and reference for the subsequent chemical treatment of natural products. © 2016 IEEE.


Gong J.,National Engineering Laboratory for Rice and Byproducts Processing | Huang W.,National Engineering Laboratory for Rice and Byproducts Processing | Zhong H.,National Engineering Laboratory for Rice and Byproducts Processing | Li Z.,National Engineering Laboratory for Rice and Byproducts Processing | And 3 more authors.
Journal of Chinese Institute of Food Science and Technology | Year: 2013

The purpose of this study was to evaluate the immunomodulatory activity of oil-tea seed meal peptide (OTSMP) in mice. With spleen lymphocytes proliferation function, index of immune organ, calculation of 50% hemolysin value (HC50), phagocytic index and phagocytic rate of macrophage, swelling rate in ear of mice induced by 2, 4-Dini-trofluorobenzene (DNFB) as evaluated indices, the immunomodulatory effect of OTSMP in mice was studied with high, medium and low dose (i. e. 250, 500, 1 000 mg/kg bw) of them. The results obtained from this study showed that all of three doses of OTSMP could effectively counteract the immunosuppressed effects of cyclophosphamide in assayed mice (P<0.05). It was suggested that this OTSMP could improve non-specific and specific immunomodulatory effects in the immunosuppressed mice. Results of this assay concerning delayed type hypersensitivity (DTH) reaction also showed that all of three doses of OTSMP could significantly improve specific immunomodulatory function on normal mice (P<0.05). These results obtained from our study suggested that OTSMP is a good immune stimulant and could strengthen the immune response of its host.


Wang H.,Ministry of Forestry Bioethanol Research Center | Gong J.,National Engineering Laboratory for Rice and Byproducts Processing | Gong J.,Key Laboratory of Cultivation and Protection for Non Wood Forest Trees
Journal of the Chinese Cereals and Oils Association | Year: 2015

This paper is aimed to investigate the decoloring technology of cold-pressed crude camellia oil (COASO) so as to provide basis for preparation of colorless cosmetic oil with high quality. Take cold-pressed crude camellia oil (≤65℃) as material, decoloring technology was optimized through single factor and orthogonal experiments. The optimum decolorizing conditions were as follows: the dosage of compound decolorant was 3.5% (m/m), the ratio of bamboo charcoal to activated clay was 2:1(m/m), temperature was 60℃, and time was 30 min. Under such conditions, the maximum rate of decolorization reached (98.2±0.1)% (n=4), the effect of the dosage of compound decolorant on the rate of decolorization reached a significant level (P<0.01). At the condition of normal temperature with and without light, its color values will come back a little more, while at the condition of low temperature with and without light, the color values of the colorless cold-pressed camelliae oil was kept at Y0R0 during the 90 d period. Compared cosmetic and medical camelliae oil reported in literatures with one of this study, the quality of our samples was better than the formers. The decoloring efficiency of this technology was higher than others. Furthermore, due to the low temperature, the bioactive components in cold-pressed crude camelliae oil can be free from destruction to the utmost. In order to ensure the quality stability of colorless camelliae oil cold-pressed, it should be preserved under condition of low temperature and without light. The samples of colorless cold-pressed camelliae oil made in this study are excellent raw material for preparation of skin-care cosmetics. ©, 2015, Editorial Department, Chinese Cereals and Oils Association. All right reserved.


Wang H.,Bioethanol Research Center | Gong J.,National Engineering Laboratory for Rice and Byproducts Processing | Gong J.,Key Laboratory of Cultivation and Protection for Non Wood Forest Trees
Journal of the Chinese Cereals and Oils Association | Year: 2015

The paper was aimed to investigate the effect of decolorization on Camellia oleifera Abel seed oil quality (COASO) cold-pressed. Crude COASO prepared under low temperature (≤65℃) had been taken as the material and bamboo charcoal/activated clay as compound decolorant; the mainly important indexes including physicochemical index, main bioactive components in COASO, fatty acid composition & content, sensory quality and rheological properties were measured before and after the decolorization process. Decolorization technology was used in the study could produce a colorless state (Y0R0) to realize COASO cold-pressed. After decolorization, the acid value and peroxide value of COASO were reduced to a extremely low level, i.e. 0.05 mg/g-1 and 0.52 mmol/kg-1 respectively; except carotenoid, bioactive components in COASO have not been significantly affected during the process of decolorization; for the flavor of COASO, its average score was only 0.3 points, in a state of almost tasteless after decolorization; in addition, the decolorization process did not change the fatty acid composition and the content of COASO; furthermore, no obvious influence on the rheological properties was observed. The result indicated that the decolorization treatment could not only make the COASO cold-pressed realize the demand of colorless and tasteless of cosmetic oil, without damage on bioactive components in COASO, but also could improve its property of preservation, with no adverse effects shown on other important quality characteristics. © 2015, Editorial Department, Chinese Cereals and Oils Association. All right reserved.


Peng X.-L.,Central South University of forestry and Technology | Peng X.-L.,National Engineering Laboratory for Rice and Byproducts Processing | Li Z.-H.,Central South University of forestry and Technology | Li Z.-H.,National Engineering Laboratory for Rice and Byproducts Processing | Qiang D.-Z.,Central South University of forestry and Technology
Proceedings of 2012 International Conference on Biobase Material Science and Engineering, BMSE 2012 | Year: 2012

This essay established the determination of cadmium content in the food paper and plastic packaging materials with wet digestion-flame atomic absorption spectrometry. The detection limit and relative standard deviations of cadmium were 0.0056μg/ml and 1.93%. The recoveries of cadmium ranged from 91.92% to 96.37%. The method has the advantages of low detection limit, high accuracy and good precision. © 2012 IEEE.


Peng X.,Central South University of forestry and Technology | Peng X.,National Engineering Laboratory for Rice and Byproducts Processing | Li Z.,Central South University of forestry and Technology | Li Z.,National Engineering Laboratory for Rice and Byproducts Processing | And 2 more authors.
Journal of Chinese Institute of Food Science and Technology | Year: 2013

A method for determining lead and cadmium content in the paper and plastic packaging materials with wet digestion-flame atomic absorption spectrometry was developed. The detection limit and relative standard deviations of lead were 0.029 μg/mL and 1.12%, the recoveries of lead ranged from 93.77% to 96.14%; The detection limit and relative standard deviations of cadmium were 0.0056 μg/mL and 1.93%, the recoveries of cadmium ranged from 91.92% to 96.37%. The method has the advantages of low detection limit, high accuracy and good precision.


Zheng Y.-J.,National Engineering Laboratory for Rice and Byproducts Processing | Zheng Y.-J.,South University of Science and Technology of China | Chen R.,National Engineering Laboratory for Rice and Byproducts Processing | Chen R.,South University of Science and Technology of China | And 2 more authors.
Chinese Traditional and Herbal Drugs | Year: 2014

Objective: To study the characteristics of 2-C-methyl-D-erythritol 4-phosphate cytidylytransferase (MCT) gene and to predict the structure and function site of MCT. Methods: Based on MCT gene of Picrorhiza kurrooa, NCBI website and bio-informatics software were used to predict and analyze the base distribution, amino acid composition, hydrophilicity or hydrophobicity, and secondary and three-level structures of hyper-conservative region. The results were compared with MCT gene sequences in other eight species and the related evolution analysis was followed. Results: The mRNA sequence of MCT gene in P. kurrooa was 1216 bp (GenBank: JQ991625.1), coding the protein containing 399 amino acids, and the relative molecular mass of protein was 44448.5 with 10.0% Ser in volume; In polypeptide, hydrophobic amino acid was 59.5% in volume, and the average hydropathicity was 0.050; The homology was found as high as 99% compared with MCT gene in Salvia miltiorrhiza. Conclusion: The MCT gene in P. kurrooa was quite stable and the coded protein was hydrophobic, which was quite conservative in evolution; The sequence information in conservative region gained in the test provides the basis for clone ofnovel gene in other species. ©, 2014, Editorial Office of Chinese Traditional and Herbal Drugs. All right reserved.


Huang W.,Central South University of forestry and Technology | Huang W.,National Engineering Laboratory for Rice and Byproducts Processing | Wang W.,Central South University of forestry and Technology | Li J.,Central South University of forestry and Technology | And 2 more authors.
Advanced Materials Research | Year: 2012

Response surface methodology was used to optimize the preparation technology of resistant starch (RS) production by raw cowpea bean starch. In the first optimization step, single factor experiments designed was used to evaluate the influence of RS yield. The RS yield were influenced significantly by some factors of preparation RS, including the starch concentration, autoclaving time, pullulanase dosage and enzymolysis temperature. The others in the investigation scope had no significant influence on the RS production. In the last step, four main factors were further optimized using Box-Behnken designs and response surface analysis. The optimized conditions in the process of preparation RS were starch concentration as 29%, autoclaving time as 38min, pullulanase dosage as 4.0PUN/g, enzymolysis temperature as 60°C. In our optimal conditions, rather good RS yield was 23.52±0.15% and repeatability of the preparation process was good which was valuable in further production.© (2012) Trans Tech Publications, Switzerland.

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