The Development Trend of Tea Industry in China

Yue-Rong Liang 한국차학회 2015 한국차학회지 Vol.- No.S

China is the largest producer and consumer of tea in the world. Tea field area and tea production in China were developed from 169.53 thousand hectares and 6220.0 tons in 1950 to 2579.3 thousand hectares and 1890.0 tons in 2013 respectively. The developments of various teas differentiated in the recent years. The production of white tea, black tea and dark tea increased more quickly than green tea and oolong tea. The development of China tea industry shows the trends: 1) continuous rise in production volume; 2) tea production shifting from eastern China to southwest China; 3) the market demand of tea products being diversified; 4) famous tea being major contributor to the output value of China tea industry; 5) comprehensive utilization of tea resources making great progress.

Effects of Green Tea on Blood Pressure and Hypertension-induced Cardiovascular Damage in Spontaneously Hypertensive Rat

Yue-Rong Liang,Shi-Cheng Ma,Xin-Qiang Zheng,Jing-Yi Xu,Ming-Yan Wu,Yi-Wen Luo,Xian-Yang Luo,Jian-Liang Lu 한국식품과학회 2011 Food Science and Biotechnology Vol.20 No.1

Three groups of spontaneously hypertensive rats were administered by gavage with distilled water (control group), low-dose green tea (LGT, 0.2 g/kg BW·day) and high-dose green tea (HGT, 1.0 g/kg BW·day) for 4 weeks,during which systolic blood pressure (SBP) was measured weekly by non-invasive tail-cuff method. At the end of experiment, left ventricular hypertrophy index (LHVI) and plasma biochemical indicators were determined, and ultrastructures of myocardium and aortic vascular smooth muscle cells were observed by transmission electron microscopy (TEM). The results show that green tea gavage suppressed the increase in SBP, along with decline in levels of plasma nitric oxide, aldosterone, malondialdehyde, and LHVI, but increased levels of plasma creatinine, calcitonin gene-related peptide, and glutathione peroxidase in a dose dependant manner. Green tea had no effect on plasma total cholesterol. TEM shows that green tea gavage protected mitochondria of left ventricular myocardium and aortic vascular smooth muscle cells from damage.

한·중·일 현대도자기디자인 비교연구

영현월(Rong xuan-yue ),노황우(Noh hwang-woo) 한국콘텐츠학회 2017 한국콘텐츠학회 종합학술대회 논문집 Vol.2017 No.5

Rice Husk as a Food Carrier Forselective Enrichment of Tea Catechins

Meng Shi,Long-Yue Huang,Rong-Rong Han,Qiao Lin, Jian-Hui Ye,Yue-Rong Liang,Jian-Hui Ye 한국차학회 2015 한국차학회지 Vol.- No.S

The potentials of rice husk, oat bran and soya milk cake as food carriers for tea catechins(TC) were studied. Adsorption properties, contact time and temperature effects and the concentration of tea catechins, as well as digestive stability were investigated in this paper. The result showed that the adsorption capacity of rice husk for tea catechins was 32.04 mgg-1 which was 28.1 % and 17.7 % higher than those of oat bran and soya milk cake and no obvious adsorbability to caffeine was observed for these materials. The selectivity coefficient K of EGCg to TC for rice husk was 4.44 in comparison with 1.87 and 1.96 of oat husk and soya milk cake. This guarantees rice husk a selective food carrier to tea catechins with enrichment of EGCg. Also, 20 min contact time and tea extract concentration above 1.75 g L-1 are recommended in order to obtain a high loading amount of tea catechins onto rice husk, and low temperature is favorable for the adsorption processof tea catechins onto rice husk. Digestive study showed that combination of tea catechins with rice husk was propitious to increase the digestive stability of tea catechins in simulated gastrointestinal fluids. Thus, rice husk is a promising food carrier for tea catechins. Further studies would be focusing on the identification and separation of the functional constituent of rice husk and its interaction mechanism with tea catechins.

Design and Preparation of Magnetic CTAB/Montmorillonite Nanocomposite for Phenols Removal

Rong Shen,Yichang Yu,Yue Wang,Zhining Xia 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2018 NANO Vol.13 No.10

The cetyltrimethyl ammonium bromide (CTAB)-modified montmorillonite (MMT) was synthesized via a novel "dissolution and reassembly" method. To determine the optimal formula, the adsorption of C.I. Reactive Red 2 (X3B) with CTAB/MMT was investigated. The optimal CTAB/MMT nanocomposite was used to remove 2,6-dichlorophenol and p-nitrophenol from aqueous solutions. The adsorption results can be described by Langmuir isotherm, and the adsorption capacities were 200 mg/g and 125 mg/g for 2,6-dichlorophenol and p-nitrophenol, respectively. To realize the quick separation and recycle, the magnetic CTAB/MMT was further strategized and synthesized. The adsorption equilibrium time was 15 min for both contaminants; the ions' strength showed a little bit of influence on the adsorption performance. In addition, compared with acidic condition, neutral condition was more beneficial to the adsorption reaction. Due to the addition of Fe3O4, the adsorption capacities of this magnetic nanocomposite for 2,6-dichlorophenol and p-nitrophenol were a little bit decreased, which were 170 mg/g and 91 mg/g, respectively. However, the magnetic nanocomposite can be separated within 30s under an external magnetic field, which would be useful in the practical application.

High-Mobility-Group family genes from Lampetra japonica reveal their early origin and molecular evolution in the vertebrate lineage

Yue Pang,Rong Xiao,Xin Liu,Qingwei Li 한국유전학회 2012 Genes & Genomics Vol.34 No.6

High-mobility group family (HMG) genes are ubiquitous in vertebrates, including mammals, birds, amphibians and fishes. To elucidate the molecular phylogeny of the HMG genes in the primitive vertebrate, we have cloned three homologues of HMG-box genes, called Lj-HMGB1, Lj-HMGB2 and Lj-HMGBX, from a cDNA library generated from lymphocyte-like cells of the Japanese lamprey (Lampetra japonica),an Agnathan that occupies a critical phylogenetic position between invertebrates and vertebrates. The open reading frames of Lj-HMGB1, Lj-HMGB2 and Lj-HMGBX contained 627 bp,585 bp and 678 bp, respectively. The analysis of the deduced amino acid sequences indicated that these three putative Lj-HMGB proteins contain four domains: HMG-box A,HMG-box B, an acidic carboxyl-terminal tail and a linker. A phylogenetic analysis revealed that the Lj-HMGB proteins fall outside the vertebrate clade; Lj-HMGBX is descended from a gene ancestral to the mammalian HMGB1/2/3. This discovery implies that there was a gene duplication event in the HMGB1/2/3 gene family that occurred after the divergence of the vertebrates (Cyclostomata) from the Cephalochordata and Urochordata at least 450 million years ago (MYA). The Lj-HMGB1, Lj-HMGB2 and Lj-HMGBX genes were detected in most tissues of the lamprey by RT-PCR. Our findings provide insight into the phylogeny of the HMGB genes in vertebrates.

Preparation and characteristics of carboplatin-Fe@C-loaded chitosan nanoparticles with dual physical drug-loaded mechanisms

Yue-Hua Guo,Fu-Rong Li,Shi-Yun Bao,Tao Han,Jun-Jian Cao,Han-Xin Zhou 한국물리학회 2007 Current Applied Physics Vol.7 No.s1

The present work is intended to set up the optimal carboplatin-Fe@C-loaded chitosan nanoparticles method and to compare andassess carboplatin-Fe@C-loaded with carboplatin-Fe-loaded chitosan nanoparticles. Both kinds of nanoparticles were prepared by areverse microemulsion method. The carboplatin-Fe@C-loaded chitosan nanoparticles consisted of Fe@C nanopowder with the adsorbeddrug as the magnetic core, chitosan as the matrix and carboplatin as the model drug. The core of the carboplatin-Fe-loaded chitosannanoparticles was pure iron nanopowder, which was unable to adsorb a drug. The characteristics of both kinds of nanoparticles weredetermined and compared. The results showed that both kinds of nanoparticles were spherical in shape with an average size of210 nm ± 26 nm (size range 150300 nm) and a good magnetic responsivity. The drug content of the nanoparticles wasrespectively. The cumulative release percentages of carboplatin-Fe@C-loaded chitosan nanoparticles in vitro in 1d, 2d, 3d, 4d were60%, 74%, 84%, and 92%, respectively, and those of carboplatin-Fe-loaded chitosan nanoparticles in 1d, 2d were 81% and 91%. Thus,the carboplatin-Fe@C-loaded chitosan nanoparticles with dual physical drug-loaded mechanisms (physical encapsulation and adsorp-tion of active carbon) possessed a higher drug content and showed more sustained releasing. The cooperation of multiple mechanismswas a promising feature to improve the properties of nanoparticles.

Challenges for commercializing perovskite solar cells

Rong, Yaoguang,Hu, Yue,Mei, Anyi,Tan, Hairen,Saidaminov, Makhsud I.,Seok, Sang Il,McGehee, Michael D.,Sargent, Edward H.,Han, Hongwei American Association for the Advancement of Scienc 2018 Science Vol.361 No.6408

<P>Perovskite solar cells (PSCs) have witnessed rapidly rising power conversion efficiencies, together with advances in stability and upscaling. Despite these advances, their limited stability and need to prove upscaling remain crucial hurdles on the path to commercialization. We summarize recent advances toward commercially viable PSCs and discuss challenges that remain. We expound the development of standardized protocols to distinguish intrinsic and extrinsic degradation factors in perovskites. We review accelerated aging tests in both cells and modules and discuss the prediction of lifetimes on the basis of degradation kinetics. Mature photovoltaic solutions, which have demonstrated excellent long-term stability in field applications, offer the perovskite community valuable insights into clearing the hurdles to commercialization.</P>

A Hybrid Life-Cycle Analysis and Two-Stage Stochastic Programming Model for Low-Carbon Management upon Urban Water Resources

Wencong Yue,Yanpeng Cai,Linyu Xu,Xumei Wang,Qiangqiang Rong,Lin Liu 보안공학연구지원센터 2016 International Journal of Smart Home Vol.10 No.6

Due to population growth and economic development, water demands for municipal, industrial, and agricultural users are increasing. It is a challenging and critical issue in water resources system to properly allocate and utilize water resources to satisfy the goals of different stakeholders and greenhouse gases mitigation. In this study, a hybrid life-cycle analysis and two-stage stochastic programming model was proposed to analyze the water-allocation strategies based on complicated urban water resource system. The hybrid model can effectively assess the low-carbon performance of an urban water resources system in the framework of life-cycle analysis. The environmental impacts and GHGs reduction of urban water resources were firstly considered as the objective and constraint for solving the water allocation problems. The results indicated that the first-stage solutions of surface water conveyance of Dalian could be [3.83×108, 8.25×108] in 2015, and [3.83×108, 9.21×108] in 2020; Meanwhile, the first-stage solutions of surface water conveyance of Dalian could be [4.26×108, 8.68×108] in 2015, and [5.35×108, 10.7×108] in 2020.

Construction and analysis of Sip1Aa insecticidal protein random recombination library

Ding Yue-ming,Wang Jing,Wang Lin,Gao Ji-Guo,Liu Rong-Mei,Li Hai-Tao 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.2

The Sip1Aa protein from Bacillus thuringiensis is highly toxic to Colaphellus bowringi Baly. In order to obtain mutant proteins with higher insecticidal activity, a random recombinant library of Sip1Aa protein was con structed using error-prone PCR. A total number of 100 positive transformants were randomly selected for sequence determination, and 25 mutants (M1 to M25) were selected and expressed the respective Sip1Aa mu tants. These Sip1Aa variants had a total of 29 base mutations, with an average of 1.2 base mutations per mutant. Compared with that of the wild-type Sip1Aa protein, the insecticidal activity of the mutants M1 (A31G, Y118C, D227E), M5 (K168R) and M21 (I307T) was significantly decreased, with and LC 50 values 4 to 6 times higher than the Sip1Aa protein. The mutant M8 (R174S) showed increase in the insecticidal activity against the Colaphellus bowringi Baly was obtained, with an LC 50 value 4-fold less than the Sip1Aa protein. The results of this study provide reference for the molecular modification of Sip1Aa protein and the study of key sites of its insecticidal activity.