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Nanotechnology in Meat Processing and Packaging: Potential Applications — A Review
Karna Ramachandraiah,한성구,진구복 아세아·태평양축산학회 2015 Animal Bioscience Vol.28 No.2
Growing demand for sustainable production, increasing competition and consideration of health concerns have led the meat industries on a path to innovation. Meat industries across the world are focusing on the development of novel meat products and processes to meet consumer demand. Hence, a process innovation, like nanotechnology, can have a significant impact on the meat processing industry through the development of not only novel functional meat products, but also novel packaging for the products. The potential benefits of utilizing nanomaterials in food are improved bioavailability, antimicrobial effects, enhanced sensory acceptance and targeted delivery of bioactive compounds. However, challenges exist in the application of nanomaterials due to knowledge gaps in the production of ingredients such as nanopowders, stability of delivery systems in meat products and health risks caused by the same properties which also offer the benefits. For the success of nanotechnology in meat products, challenges in public acceptance, economics and the regulation of food processed with nanomaterials which may have the potential to persist, accumulate and lead to toxicity need to be addressed. So far, the most promising area for nanotechnology application seems to be in meat packaging, but the long term effects on human health and environment due to migration of the nanomaterials from the packaging needs to be studied further. The future of nanotechnology in meat products depends on the roles played by governments, regulatory agencies and manufacturers in addressing the challenges related to the application of nanomaterials in food.
Stopped-Flow Kinetic Analysis of the Interaction of Cyclo[8]pyrrole with Anions
Karnas, Elizabeth,Kim, Sung Kuk,Johnson, Kenneth A.,Sessler, Jonathan L.,Ohkubo, Kei,Fukuzumi, Shunichi American Chemical Society 2010 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Vol.132 No.46
<P>The on and off rates corresponding to the binding of two test anions (acetate, AcO<SUP>−</SUP>, and dihydrogen phosphate, H<SUB>2</SUB>PO<SUB>4</SUB><SUP>−</SUP>, studied as their tetrabutylammonium salts) to diprotonated cyclo[8]pyrrole have been determined in CH<SUB>3</SUB>CN using stopped-flow analyses carried out at various temperatures. For dihydrogen phosphate, this afforded the activation enthalpies and entropies associated with both off and on processes. The different dynamic behavior seen for these test anions underscores the utility of kinetic analyses as a possible new tool for the advanced characterization of anion receptors.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/2010/jacsat.2010.132.issue-46/ja107471x/production/images/medium/ja-2010-07471x_0001.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ja107471x'>ACS Electronic Supporting Info</A></P>
Karna, Darshana,Ko, Ilsang The Korea Society of Management Information System 2013 Asia Pacific Journal of Information Systems Vol.23 No.4
This study investigates the potential components for academic research collaboration, and the factors that make it possible to achieve higher academic productivity. The components include collaboration factors and a collaboration model. We use two major collaboration factors to develop a framework for understanding the mechanisms that influence academic research collaborations: motivational factors and mediating factors. Motivational factors include self-motivation and trust whereas mediating factors are collaboration orientation and peer support. We analyze the effect for use of e-collaboration with research performance, reward, and satisfaction with e-research output. A survey of academicians was conducted, and by using the factor analysis and the structural equation model with SPSS 20 AMOS, we illustrate the possible influence of these factors on research performance and satisfaction. We discovered that both motivational and mediating factors play important roles on the success of academic research. This study offers several implications for academicians. We develop a parsimonious research model, which is related to e-collaboration in academic research. This unique model offers academicians to achieve good publication output from the research team. The motivational factor, self-motivation and trust, are important factors which has received positive impact of mediating factor collaboration orientation and peer support. Our research sheds light on the crucial factors for use of e-collaboration which offer the ultimate effect on performance and satisfaction with e-research output. Satisfaction motivates people to work more and more on the field of their interest, thereby influencing the performance of academicians. Rewards should be distributed according to performance of the individual, which will motivate the person to become more enthusiastic for his work of interest. Our evidence suggests that in understating the collaborative process, one must account for the context in which the collaboration occurs, the motivation of the collaborators, the scope and nature of the project, the roles and activities undertaken, and interpersonal processes such as trust. Researchers' motivations for engaging in collaboration were both instrumental and intrinsic.
Development of InDel markers to identify Capsicum disease resistance using whole genome resequencing
Karna, Sandeep,Ahn, Yul-Kyun The Korean Society of Plant Biotechnology 2018 식물생명공학회지 Vol.45 No.3
In this study, two pepper varieties, PRH1 (powdery mildew resistance line) and Saengryeg (powdery mildew resistance line), were resequenced using next generation sequencing technology in order to develop InDel markers. The genome-wide discovery of InDel variation was performed by comparing the whole-genome resequencing data of two pepper varieties to the Capsicum annuum cv. CM334 reference genome. A total of 334,236 and 318,256 InDels were identified in PRH1 and Saengryeg, respectively. The greatest number of homozygous InDels were discovered on chromosome 1 in PRH1 (24,954) and on chromosome 10 (29,552) in Saengryeg. Among these homozygous InDels, 19,094 and 4,885 InDels were distributed in the genic regions of PRH1 and Saengryeg, respectively, and 198,570 and 183,468 InDels were distributed in the intergenic regions. We have identified 197,821 polymorphic InDels between PRH1 and Saengryeg. A total of 11,697 primers sets were generated, resulting in the discovery of four polymorphic InDel markers. These new markers will be utilized in order to identify disease resistance genotypes in breeding populations. Therefore, our results will make a one-step advancement in whole genome resequencing and add genetic resource datasets in pepper breeding research.
Development of InDel markers to identify Capsicum disease resistance using whole genome resequencing
Sandeep Karna,안율균 한국식물생명공학회 2018 JOURNAL OF PLANT BIOTECHNOLOGY Vol.45 No.3
In this study, two pepper varieties, PRH1 (powdery mildew resistance line) and Saengryeg (powdery mildew resistance line), were resequenced using next generation sequencing technology in order to develop InDel markers. The genome-wide discovery of InDel variation was performed by comparing the whole-genome resequencing data of two pepper varieties to the Capsicum annuum cv. CM334 reference genome. A total of 334,236 and 318,256 InDels were identified in PRH1 and Saengryeg, respectively. The greatest number of homozygous InDels were discovered on chromosome 1 in PRH1 (24,954) and on chromosome 10 (29,552) in Saengryeg. Among these homozygous InDels, 19,094 and 4,885 InDels were distributed in the genic regions of PRH1 and Saengryeg, respectively, and 198,570 and 183,468 InDels were distributed in the intergenic regions. We have identified 197,821 polymorphic InDels between PRH1 and Saengryeg. A total of 11,697 primers sets were generated, resulting in the discovery of four polymorphic InDel markers. These new markers will be utilized in order to identify disease resistance genotypes in breeding populations. Therefore, our results will make a one-step advancement in whole genome resequencing and add genetic resource datasets in pepper breeding research.
Novel Highly Potent 15-Hydroxyprostaglandin Dehydrogenase Inhibitors
( Sandeep Karna ),( Hoon Cho ) 조선대학교 공학기술연구원 2010 공학기술논문지 Vol.3 No.3
15-hydroxyprostaglandin dehydrogenase (15-PGDH) catalyzes NAD(+) dependent oxidation of 15(S)-bydroxyl group of prostaglandins and lipoxines resulting in the formation of 15-keto metabolites which exhibit greatly induced biological diseases. Inhibition of this enzyme (15-PGDH) may be of value in anticancer therapy including cardiovascular disease, gastrointestinal disease, wound healing, skin care, heir loss and impotence. Preuiously, CT-8 a thiazolidinedione analogue, was originated to be a potent inhibitor of 15-PGDH. Based on the structure of thiazolidinediones analogues and inhibitory activity, a range of thiazolidinedione derivatives were synthesized with different substituents and their inhibitory activity was evaluated. It was found that compound 3(5-{[5-(4-chlorophenl)thiophen-2-yl]methylidene}-1,3-thiazolidine-2,4-dione)was the most potent inhibitor with IC50 0.14 μM.