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Physicochemical and Sensory Characterization of Ginger-juice Yogurt during Fermentation
Guo-Hao Yang,Jun-Jun Guan,Jin-Shui Wang,Haicheng Yin,Fa-Dong Qiao,Feng Jia 한국식품과학회 2012 Food Science and Biotechnology Vol.21 No.6
The primary purpose of this study was to investigate the effects of a ginger (Zingiber ofcinale) juice addition to milk on the physicochemical and sensory properties and consumer acceptability of yogurt during fermentation. Under the presence of ginger juice at 2.0 to 10.0%(v/v), there was a significant influence (p<0.05) on the viability of characteristic microorganisms in yogurt,the pH, titratable acidity (ºSH), viscosity, and hardness of the products. The descriptive data showed significant differences (p<0.05) among the samples for all attributes. The consumer results from external preference mapping indicated that samples with the lower ginger juice (≤4%)were liked over the higher samples (≥6%), with a negative impact on the acceptance by the consumers. Therefore,these findings suggest that 4%(v/v) may be the more appropriate content of ginger juice in the preparation of ginger-juice yogurt.
Multielectrochromic Copolymers Based on Thiophene Derivatives: Tunable Optoelectronic Properties
Yafei Guo,Gaoyong Liang,Mengjie Dong,Meihui Wang,Xinmin Hao 한국섬유공학회 2022 Fibers and polymers Vol.23 No.9
In this study, a series of copolymers based on 3-methoxythiophene(MOT) and 3,4-ethylenedioxythiophene(EDOT) have been prepared by electrochemical method in boron trifluoride diethyl etherate (BFEE). The copolymers arecharacterized by FTIR, XPS, SEM and cyclic voltammograms. The MOT/EDOT ratio in the polymer chain decreases withthe decreasing MOT/EDOT feed ratio, and low polymerization potential incorporates more EDOT units into the polymerchain. The electrochromic properties of the copolymers can be greatly tuned by the applied MOT/EDOT feed ratio. Absorption peak of the neutral copolymer presents red-shift with increasing feed ratio, and each copolymer has multicolorelectrochromism. In addition, the copolymers present fast-switching response, reasonable coloration efficiency and goodstability. All these indicate that the copolymers based on facile, commercial MOT and EDOT are promising candidates forelectrochromic applications.
Zhi-Fu Guo,Xiang-Yu Long,Pan Dong,Yu-Ming Wei,Li-Ping Bai,Xiao-Xuan Dang,Hao-Lei Wan,Li-Jun Zhang,You-Liang Zheng 한국유전학회 2011 Genes & Genomics Vol.33 No.2
The α-gliadins from Crithopsis delileana (Schult) Roshev (2n=2x=14, KK) were investigated by Acid polyacrylamide gel electrophoresis (A-PAGE) analysis. It was indicated that the electrophoresis mobility of gliadins from C.delileana had obvious difference with those from common wheat in α, γand ω region. Using primers designed from published sequences of α-gliadin genes, three α-gliadin genes were isolated from C. delileana, which were designated as gli-ka1,gli-ka2 and gli-ka3, respectively. Two in-frame stop codons were found in the coding sequences of gli-ka3, indicating that gli-ka3 could be a pseudogene. The gli-ka2 was a gliadin with an odd number of cysteines, resulting from a non-synonymous mutation. This change might lead to the interactive behavior of gli-ka2. Three α-gliadin genes of C. delileana had the similar but not identical primary structures to the corresponding gene sequences from other wheat related species. By the alignment of α-gliadin genes from Triticeae,phylogenetic analysis indicated that three α-gliadin genes of C. delileana clustered together with all α-gliadin genes from Ee genome of Lophopyrum elongatum by an interior paralleled branch.
Hou Jing-Hao,He Yu,Ma Yu,Guo Jin-Meng,Wei Zhi-Qiang,Yan Qi,Zhang Jin,Dong Shuanglin 한국응용곤충학회 2023 Journal of Asia-Pacific Entomology Vol.26 No.2
Some chemosensory genes are found to be expressed specifically or highly in the male reproductive system, suggesting their importance in male reproductive physiology. In this paper, we identified chemosensory genes expressed in the male reproductive system of the moth pest Spodoptera exigua by transcriptome and proteome sequencing, and further determined expression patterns of these genes regarding antennae and different tissues of the male reproductive system (testes, vas deferens, seminal vesicles, ejaculatory ducts, male accessory glands) by the real-time quantitative PCR (qPCR). Transcriptome analysis showed that 46 chemosensory genes were expressed in the male reproductive system of S. exigua, including 18 odorant binding proteins (OBPs), 12 che mosensory proteins (CSPs), 10 odorant receptors (ORs) and 6 other chemosensory genes. Further qPCR mea surements revealed that 14 chemosensory genes were expressed specifically or highly in the male reproductive tissues, relative to that in male antennae. Of the 14 genes, OBP17, OBP22, OBP27 and GR43 were specifically expressed in the testes; OBP20 was specifically expressed in the vas deferens; and PBP4 was specifically expressed in the male accessory glands. In addition, proteome data of the spermatophore confirmed that at least 4 OBPs and one CSP were transmitted from males to females, suggesting their function in the reproductive physiology of mated females. The results provide insights into the functional diversity of chemosensory genes, and bases for exploring functions of these chemosensory genes in male reproductive physiology.
Wang, Ai-Guo,Fang, Wan,Han, Ying-Hao,Cho, Sang-Mi,Choi, Jong Young,Lee, Kee Ho,Kim, Wook Hwan,Kim, Jin Man,Park, Moon Gi,Yu, Dae-Yeul,Kim, Nam-Soon,Lee, Dong-Seok The Korean Academy of Medical Sciences 2006 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.21 No.5
<P>Ras-related, estrogen-regulated, and growth-inhibitory gene (RERG) is a novel gene that was first reported in breast cancer. However, the functions of RERG are largely unknown in other tumor types. In this study, RERG expression was analyzed in hepatocellular carcinomas of human patients using reverse transcriptase PCR analysis. In addition, the possible regulation of RERG expression by histone deacetyltransferases (HDACs) was studied in several cell lines. Interestingly, the expression of RERG gene was increased in hepatocellular carcinoma (HCC) of male patients (57.9%) but decreased in HCC of females (87.5%) comparison with paired peri-tumoral tissues. Moreover, RERG gene expression was increased in murine hepatoma Hepa1-6 cells, human breast tumor MDA-MB-231 cells, and mouse normal fibroblast NIH3T3 cells after treated by HDAC inhibitor, trichostatin A. Our results suggest that RERG may function in a gender-dependent manner in hepatic tumorigenesis and that the expression of this gene may be regulated by an HDAC-related signaling pathway.</P>
Han Ying-Hao,Mao Ying-Ying,Yu Nan-Nan,Jin Mei-Hua,Jin Ying-Hua,Wang Ai-Guo,Zhang Yong-Qing,Shen Gui-Nan,Cui Yu-Dong,Yu Li-Yun,Lee Dong-Seok,Jo Yu-Jin,Sun Hu-Nan,Kwon Jeongwoo,권태호 한국응용생명화학회 2020 Applied Biological Chemistry (Appl Biol Chem) Vol.63 No.3
In this study, we used RNA sequencing (RNA-seq) to analyze and compare bulk cell samples from wild-type (WT) dermal mesenchymal stem cells (DMSCs) (n = 3) and Prx II knockout DMSCs (n = 3). The purpose of the study was to elucidate the role of Prx II on allogeneic immune rejection of transplanted DMSCs. The results revealed differential expression of 472 genes (176 up-regulated and 296 down-regulated; p ≤ 0.05) between the PrxII+/+ (WT) and PrxII−/− sample groups. When highly regulated genes were categorized according to the Gene Ontology (GO) molecular function classification and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis, the PrxII−/− samples showed a robust downward trend in allograft rejection. The study identified 43 all immunologically rejected differentially expressed genes, of which 41 showed lower expression in the PrxII−/− vs. PrxII+/+ (WT) samples. These findings suggest that Prx II gene knockout may down-regulate the allograft rejection that occurs during DMSCs transplantation and improve the survival rate of DMSCs in the host. This study provides a new perspective on the clinical treatment of stem cell transplantation.
Non-structural 5A protein of hepatitis C virus induces a range of liver pathology in transgenic mice
Wang, Ai-Guo,Lee, Dong-Seok,Moon, Hyung-Bae,Kim, Jin-Man,Cho, Kyung-Hyun,Choi, Soo-Ho,Ha, Hye-Lin,Han, Ying-Hao,Kim, Dae-Ghon,Hwang, Soon B.,Yu, Dae-Yeul John Wiley Sons, Ltd. 2009 The Journal of pathology Vol.219 No.2
<P>Hepatitis C virus (HCV) is a major cause of chronic hepatitis, liver cirrhosis and hepatocellular carcinoma (HCC). However, the mechanism of HCV pathogenesis is not well understood. Our previous in vitro studies suggested that non-structural 5A (NS5A) protein may play an important role in liver pathogenesis. To elucidate the mechanism of HCV-induced liver pathogenesis, we investigated the histopathological changes of liver in transgenic mice harbouring the NS5A gene. We generated transgenic mice harbouring HCV NS5A gene under the control of hepatitis B virus (HBV) enhancer. Pathological changes were analysed by immunohistochemical staining and western blot analysis. Lipid composition and reactive oxygen species (ROS) production in NS5A transgenic mice were analysed. HCV NS5A transgenic mice developed extraordinary steatosis over 6 months old and induced HCC in some mice. NS5A was co-localized with apolipoprotein A-I in fatty hepatocytes. In addition, the extraordinarily high levels of ROS, NF-κB and STAT3 were detected in hepatocytes of NS5A transgenic mice. These data suggest that NS5A, independent of other HCV viral proteins, may play an important role in the development of hepatic pathologies, including steatosis and hepatoceullular carcinoma in transgenic mice. Copyright © 2009 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.</P>
Discovery of the leinamycin family of natural products by mining actinobacterial genomes
Pan, Guohui,Xu, Zhengren,Guo, Zhikai,Hindra,Ma, Ming,Yang, Dong,Zhou, Hao,Gansemans, Yannick,Zhu, Xiangcheng,Huang, Yong,Zhao, Li-Xing,Jiang, Yi,Cheng, Jinhua,Van Nieuwerburgh, Filip,Suh, Joo-Won,Duan National Academy of Sciences 2017 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.114 No.52
<P>Nature's ability to generate diverse natural products from simple building blocks has inspired combinatorial biosynthesis. The knowledge-based approach to combinatorial biosynthesis has allowed the production of designer analogs by rational metabolic pathway engineering. While successful, structural alterations are limited, with designer analogs often produced in compromised titers. The discovery-based approach to combinatorial biosynthesis complements the knowledge-based approach by exploring the vast combinatorial biosynthesis repertoire found in Nature. Here we showcase the discovery-based approach to combinatorial biosynthesis by targeting the domain of unknown function and cysteine lyase domain (DUF-SH) didomain, specific for sulfur incorporation from the leinamycin (LNM) biosynthetic machinery, to discover the LNM family of natural products. By mining bacterial genomes from public databases and the actinomycetes strain collection at The Scripps Research Institute, we discovered 49 potential producers that could be grouped into 18 distinct clades based on phylogenetic analysis of the DUF-SH didomains. Further analysis of the representative genomes from each of the clades identified 28 lnm-type gene clusters. Structural diversities encoded by the LNM-type biosynthetic machineries were predicted based on bioinformatics and confirmed by in vitro characterization of selected adenylation proteins and isolation and structural elucidation of the guangnanmycins and weishanmycins. These findings demonstrate the power of the discovery-based approach to combinatorial biosynthesis for natural product discovery and structural diversity and highlight Nature's rich biosynthetic repertoire. Comparative analysis of the LNM-type biosynthetic machineries provides outstanding opportunities to dissect Nature's biosynthetic strategies and apply these findings to combinatorial biosynthesis for natural product discovery and structural diversity.</P>