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Fruit Quality Attributes of Blackberry (Rubus sanctus) Mutants Obtained by ^(60)Co Gamma Irradiation
Pervin Basaran,Kahraman Kepenek 한국생물공학회 2011 Biotechnology and Bioprocess Engineering Vol.16 No.3
Blackberry mutants were induced by the irradiation of blackberry shoots with 5 kilo radians of cobalt (^(60)Co) gamma irradiation. Seven mutant plants demonstrating improved plant growth properties were selected for evaluation of the fruit quality characteristics, such as size,shape, color, firmness, soluble solids content, juice acidity,nutritive value (e.g. ascorbic acid) and overall fruit flavor. The organoleptic properties, including texture, firmness,flavor, sweetness, acidity, color, and overall fruit flavor,were evaluated by a consumer panel. The results indicated that irradiation induced changes in some of the quality parameters of blackberry fruits, as well as increased the fruit shelf-life.
An Assessment of Emerging Molecular Farming Activities Based on Patent Analysis (2002~2006)
Pervin Basaran,Emilio Rodriguez-Cerezo 한국생물공학회 2008 Biotechnology and Bioprocess Engineering Vol.13 No.3
The products of Plant Molecular Farming are recombinant proteins or their metabolic products. In this study, patent data was employed to assess industrial trend in the research and innovation process of Plant Molecular Farming within national and international context. The US Patent and Trade Organization (USPTO), the European Patent Office (EPO) issued a total of 585 patents covering Plant Molecular Farming from 2002 through 2006. By nationality, US inventors predominated as recipients of PMF patents, followed by Germany, Denmark, and Japan. The PMF patents were catagorized in five major areas of research namely pharmaceutical and nutraceuticals with 170 patents (31%) and plant expression tools and methods for alternative production systems with 169 patents (29%) were the dominating patent applications, followed by 102 patent claims associated with antibodies (17%), 71 patents of industrial molecules (12%), 48 patents of vaccines (8%), and finally 18 patents related to post-translational protein glycosylation (3%). The greatest proportion of patentees was of US origin (52%), and PMF associated patenting activities at the USPTO and EPO were dominated with 67% by private organizations.
Pervin, M.,Hasnat, Md.A.,Lim, J.H.,Lee, Y.M.,Kim, E.O.,Um, B.H.,Lim, B.O. Butterworths ; Elsevier Science Ltd 2016 The Journal of nutritional biochemistry Vol.28 No.-
<P>Inflammatory bowel disease (IBD) is an inflammatory disorder caused by hyperactivation of effector immune cells that produce high levels of proinflammatory cytokines. The aims of our study were to determine whether orally administered blueberry extract (BE) could attenuate or prevent the development of experimental colitis in mice and to elucidate the mechanism of action. Female Balb/C mice (n=7) were randomized into groups differing in treatment conditions (prevention and treatment) and dose of BE (50 mg/kg body weight). Acute ulcerative colitis was induced by oral administration of 3% dextran sodium sulfate for 7 days in drinking water. Colonic mucosal injury was assessed by clinical, macroscopic, biochemical and histopathological examinations. BE significantly decreased disease activity index and improved the macroscopic and histological score of colons when compared to the colitis group (P<.05). BE markedly attenuated myeloperoxidase accumulation (colitis group 54.97 +/- 2.78 nmol/mg, treatment group 30.78 +/- 1.33 nmol/mg) and malondialdehyde in colon and prostaglandin E2 level in serum while increasing the levels of superoxide dismutase and catalase (colitis group 11.94 +/- 1.16 U/ml, BE treatment group 16.49 +/- 0.39 U/ml) compared with the colitis group (P<.05). mRNA levels of the cyclooxygenase (COX)-2, interferon-gamma, interleukin (IL)-1 beta and inducible nitric oxide synthase cytokines were determined by reverse transcriptase polymerase chain reaction. Immunohistochemical analysis showed that BE attenuates the expression of COX-2 and IL-1 beta in colonic tissue. Moreover, BE reduced the nuclear translocation of nuclear transcription factor kappa B (NF-kappa B) by immunofluorescence analysis. Thus, the anti-inflammatory effect of BE at colorectal sites is a result of a number of mechanisms: antioxidation, down regulation of the expression of inflammatory mediators and inhibition of the nuclear translocation of NF-kappa B. (C) 2015 Elsevier Inc. All rights reserved.</P>
Shamim-Ara Pervin,김갑진,Arun Anand Prabu,이용택 한국고분자학회 2015 Macromolecular Research Vol.23 No.1
Poly(vinylidene fluoride) (PVDF) based water purification membranes exhibit excellent thermal stability andchemical resistance, but also possess inherent drawbacks such as severe membrane fouling, lower separation efficiency andwater flux due to its hydrophobic nature. In the present study, we attempted to enhance the hydrophilicity of PVDFmembranes by treating with varying content (0 to 3 wt%) of partially sulfonated poly(1,4-phenylene sulfide) (sPPS)component using phase-inversion process. Compared to neat PVDF membrane, the PVDF/sPPS blend membranesexhibited typical asymmetric morphology with larger finger-like pores, efficient distribution of hydrophilic SO3-groups and decreasing water contact angle (WCA) upto 62o (77o for neat PVDF) as confirmed from scanning electronmicroscope (SEM), energy dispersive X-ray spectroscopy (EDX) and contact-angle measurements, respectively. Studies carried out for pure water flux (880 L/m2h) and blood serum albumin (BSA) solution flux (185 L/m2h)confirmed the enhanced permeability and higher fouling resistance for PVDF-sPPS (3 wt% sPPS) membranescompared to neat PVDF membrane (175 L/m2h and 63 L/m2h, respectively), though the BSA flux decreased withan increase in the filtration time due to membrane fouling. Compared to the total organic carbon (TOC) values ofpoly(ethylene oxide) (PEO) aqueous solutions before permeation (189.9 mg/L for Mw=100,000 and 75.68 mg/L forMw=300,000), TOC of neat PVDF membrane decreased to 15 mg/L for Mw= 100,000 and 5 mg/L for Mw=300,000. Withincreasing sPPS content, the TOC values showed an increasing trend due to their increasing pore size. Overall, theincorporation of sPPS in PVDF membrane lowered the WCA, enhanced fouling resistance and improved its permeabilityand selectivity, which exemplifies the importance of this study.
Shamim-Ara Pervin,Arun Anand Prabu,Kap-Jin Kim 한국섬유공학회 2022 Fibers and polymers Vol.23 No.4
Structural characterization of industrial-grade poly(1,4-phenylene sulfide) (PPS) batch samples (solution- andmelt-polymerized) can only be carried out using expensive and least available solid-state NMR/high-thermal viscometer dueto their insolubility in common organic solvents even at 200 oC. In the present study, we prepared sulfonated PPS (sPPS)which is soluble in common organic solvents even at ambient temperature conditions, thereby facilitating its easiercharacterization in the solution state at R.T. using FTIR, NMR, and solution-viscosity measurements. sPPS was synthesizedthrough the anionic modification of PPS using chlorosulfonic acid (ClSO3H) and dichloromethane as a function of varyingPPS:ClSO3H mole ratio (1:5 and 1:10) and sulfonation time (1 to 48 h). A previously unreported methodology to identify thebranching types (phenylene and sulfide branching) in PPS was carried out using 1H-NMR curve-fitting analysis withLorentzian equation. Melt-polymerized PPS samples were analyzed to contain about two times higher degree of branchingthan the solution-polymerized PPS ones.