Pt-MWCNT modified carbon electrode strip for rapid and quantitative detection of H2O2 in food
Publication date: April 2018Source: Journal of Food and Drug Analysis, Volume 26, Issue 2Author(s): Tai-Cheng Chou, Kai-Yu Wu, Fu-Xiang Hsu, Cheng-Kang LeeAbstractA single-use screen-printed carbon electrode strip was designed and fabricated. Nanohybrids, prepared by deposition of platinum (Pt) nanoparticles on multi-wall carbon nanotube (MWCNT), was modified on the surface of screen-printed carbon electrode for the development of a fast, sensitive and cost-effective hydrogen peroxide (H2O2) detection amperometric sensor strip. With Pt-MWCNT nanohybrids surface modification, current generated in response to H2O2 by the scr...
Source: Journal of Food and Drug Analysis - July 11, 2018 Category: Food Science Source Type: research

Determination of total mercury in seafood by ion-selective electrodes based on a thiol functionalized ionic liquid
Publication date: April 2018Source: Journal of Food and Drug Analysis, Volume 26, Issue 2Author(s): Juan Miao, Xin Wang, Yunchang Fan, Jing Li, Lina Zhang, Guitao Hu, Can He, Can JinAbstractA mercury(II) ion-selective electrode with an ionic liquid (IL), 1-methyl-2-butylthioimidazolium bis(trifluoromethanesulphonyl)imide ([C1C4Sim]NTf2) as active material was constructed. Parameters affecting the performance of the electrodes such as the dosages of the IL and carbon nanotubes and the aqueous pH values were investigated. Experimental results indicated that the optimal composition of the electrode filling material was 47.6% ...
Source: Journal of Food and Drug Analysis - July 11, 2018 Category: Food Science Source Type: research

Characteristics of fucose-containing polysaccharides from submerged fermentation of Agaricus blazei Murill
In this study, we characterized bioactive fucose-containing acidic polysaccharides from submerged fermentation of Agaricus blazei Murill. We obtained the polysaccharides through a cell-based activity-guided strategy, and used carbohydrate recognition monoclonal antibodies based Enzyme-Linked Immuno Sorbent Assay (ELISA) along with methylation and NMR analyses to investigate the structural characteristics of the polysaccharides. The polysaccharides had Mw of 3.5 × 105 Da. The major sugars were l-fucose, l-arabinose, d-galactose, d-xylose, and d-galacturonic acid in the molar ratio of 6.4, 15.5, 28.5, 14.7, and 25.0% wit...
Source: Journal of Food and Drug Analysis - July 11, 2018 Category: Food Science Source Type: research

HPTLC-FLD-SERS as a facile and reliable screening tool: Exemplarily shown with tyramine in cheese
Publication date: April 2018Source: Journal of Food and Drug Analysis, Volume 26, Issue 2Author(s): Liao Wang, Xue-Ming Xu, Yi-Sheng Chen, Jie Ren, Yun-Tao LiuAbstractThe serious cytotoxicity of tyramine attracted marked attention as it induced necrosis of human intestinal cells. This paper presented a novel and facile high performance thin-layer chromatography (HPTLC) method tailored for screening tyramine in cheese. Separation was performed on glass backed silica gel plates, using methanol/ethyl acetate/ammonia (6/4/1 v/v/v) as the mobile phase. Special efforts were focused on optimizing conditions (substrate preparation...
Source: Journal of Food and Drug Analysis - July 11, 2018 Category: Food Science Source Type: research

Production of antioxidant and ACE-inhibitory peptides from Kluyveromyces marxianus protein hydrolysates: Purification and molecular docking
Publication date: April 2018Source: Journal of Food and Drug Analysis, Volume 26, Issue 2Author(s): Mahta Mirzaei, Saeed Mirdamadi, Mohamad Reza Ehsani, Mahmoud AminlariAbstractKluyveromyces marxianus protein hydrolysates were prepared by two different sonicated-enzymatic (trypsin and chymotrypsin) hydrolysis treatments to obtain antioxidant and ACE-inhibitory peptides. Trypsin and chymotrypsin hydrolysates obtained by 5 h, exhibited the highest antioxidant and ACE-inhibitory activities. After fractionation using ultrafiltration and reverse phase high performance liquid chromatography (RP-HPLC) techniques, two new peptide...
Source: Journal of Food and Drug Analysis - July 11, 2018 Category: Food Science Source Type: research

Compositional analyses of white, brown and germinated forms of popular Malaysian rice to offer insight into the growing diet-related diseases
Publication date: April 2018Source: Journal of Food and Drug Analysis, Volume 26, Issue 2Author(s): Bilyaminu Abubakar, Hafeez Muhammad Yakasai, Norhasnida Zawawi, Maznah IsmailAbstractDiet-related metabolic diseases, and especially obesity, are metabolic disorders with multifactorial aetiologies. Diet has been a cornerstone in both the aetiology and management of this metabolic disorders. Rice, a staple food for over half of the world's population, could be exploited as part of the solution to check this menace which has been skyrocketing in the last decade. The present study investigated nine forms of rice from three wid...
Source: Journal of Food and Drug Analysis - July 11, 2018 Category: Food Science Source Type: research

Comparison of anti-inflammatory effect and protein profile between the water extracts from Formosan sambar deer and red deer
In this study, we demonstrated the difference of anti-inflammatory effect and the protein profile between SVAE and RVAE. SVAE showed better anti-inflammatory potential than RVAE. In the future, the anti-inflammatory active components and their related mechanisms should be further investigated.Graphical abstract (Source: Journal of Food and Drug Analysis)
Source: Journal of Food and Drug Analysis - July 11, 2018 Category: Food Science Source Type: research

Curculigoside and polyphenol-rich ethyl acetate fraction of Molineria latifolia rhizome improved glucose uptake via potential mTOR/AKT activated GLUT4 translocation
Publication date: Available online 5 April 2018Source: Journal of Food and Drug AnalysisAuthor(s): Der Jiun Ooi, Nur Hanisah Azmi, Mustapha Umar Imam, Noorjahan Banu Alitheen, Maznah IsmailAbstractAdipose tissue is one of the major organs responsible for rapid restoration of postprandial glucose fluxes. Being the major isoform of glucose transporter in adipose tissue, regulations of insulin-dependent GLUT4 trafficking have always been of research interest. The present study aimed to examine the molecular mechanisms underlying the efficacy of curculigoside and polyphenol-rich ethyl acetate fraction (EAF) of Molineria latifo...
Source: Journal of Food and Drug Analysis - July 11, 2018 Category: Food Science Source Type: research

A novel micro-extraction strategy for extraction of bisphosphonates from biological fluids using zirconia nanoparticles coupled with spectrofluorimetry and high performance liquid chromatography
Publication date: Available online 5 April 2018Source: Journal of Food and Drug AnalysisAuthor(s): Nadereh Rahbar, Ladan Nazernezhad, Maryam Asadinezhad, Zahra Ramezani, Maryam KouchakAbstractExtraction of bisphosphonates from biological fluids is important and time consuming step in sample preparation procedure. This paper describes a simple and green sample preparation technique for dispersive micro solid phase extraction (DMSPE) of alendronate sodium (ALS) from urine and serum samples prior to direct spectrofluorimetry (DSFL) and high performance liquid chromatography with fluorescence detection (HPLC-FLD), respectively...
Source: Journal of Food and Drug Analysis - July 11, 2018 Category: Food Science Source Type: research

Profiles of commensal and opportunistic bacteria in human milk from healthy donors in Taiwan
In conclusion, each milk sample revealed a unique profile and patterns of bacterial abundance levels, and our data do not support the idea that lactobacilli and bifidobacteria are common and abundant in modern milk samples. Because none of the donors of the milk samples showed mastitis or any discomfort during the sampling process or at follow-up inspection, the microbiota of these milk samples is not likely to negatively affect its host. This study provides new information on the proportions of commensal bacteria in human milk in Taiwan.Graphical abstractBacterial species composition in human milk samples from healthy don...
Source: Journal of Food and Drug Analysis - July 11, 2018 Category: Food Science Source Type: research

Down-regulation of partial substitution for staple food by oat noodles on blood lipid levels: A randomized, double-blind, clinical trial
Publication date: Available online 26 May 2018Source: Journal of Food and Drug AnalysisAuthor(s): Miao-Yu Liao, You-Cheng Shen, Hui-Fang Chiu, Siew-Moi Ten, Yan-Ying Lu, Yi-Chun Han, Kamesh Venkatakrishnan, Shun-Fa Yang, Chin-Kun WangAbstractThis clinical trial was conducted to assess the lipid-lowering activity of oat noodles by replacing partial staple food (wheat or rice noodle) in normal and mildly hypercholesterolemic subjects. Totally 84 healthy and mild hypercholesterolemic subjects were recruited and divided into 2 groups as experimental (oat noodles) and placebo (wheat noodles) and instructed to consume 100 g of ...
Source: Journal of Food and Drug Analysis - July 11, 2018 Category: Food Science Source Type: research

A steroidal derivative from Trigonella foenum graecum L. that induces apoptosis in vitro and in vivo
In this study, we investigated the cytotoxicity, antitumor, antimetastatic and antiangiogenic effect of the steroidal compound, ethyl iso-allocholate isolated from T. foenum graecum L. seeds against A549 lung cancer cells in vitro and in vivo. Among all the isolated compounds, the ethyl iso-allocholate rendered the highest cytotoxicity potential. It showed least percentage cell viability in trypan blue assay and lowest nuclei count in hoechst staining. The caspase glo assay and western blot analysis showed the significant caspase 3 cleavage, indicating caspase dependent apoptosis. Consistent with the in vitro data, ethy...
Source: Journal of Food and Drug Analysis - July 11, 2018 Category: Food Science Source Type: research

Application of food description to the food classification system: Evidence of risk assessment from Taiwan as Acrylamide of grain products
This study also compared the Acrylamide hazard index estimated under the HFDFC system with that under the National Food Consumption Database in Taiwan (NFCDT). The findings indicated that the HFDFC system provides useful and detailed information that helps the users to quickly identify food information in a harmonized manner and to reduce estimation bias. The HFDFC system is expected to facilitate global comparisons in the food risk assessment because it is built based upon EU Foodex2.Graphical abstract (Source: Journal of Food and Drug Analysis)
Source: Journal of Food and Drug Analysis - July 11, 2018 Category: Food Science Source Type: research

Therapeutic effects of Lactobacillus paracasei subsp. paracasei NTU 101 powder on dextran sulfate sodium-induced colitis in mice
Publication date: Available online 31 May 2018Source: Journal of Food and Drug AnalysisAuthor(s): Chien-Li Chen, Pei-Yu Hsu, Tzu-Ming PanAbstractUlcerative colitis (UC) is a form of inflammatory bowel disease (IBD) whose exact cause is still unclear. Disruption of the intestinal microflora is considered one of the main causes of the disease. Lactobacillus paracasei subsp. paracasei NTU 101 (NTU 101) is a multifunctional strain that has been shown in previous studies to possess anti-inflammatory properties and to exert a modulatory effect on intestinal bacteria associated with certain pathogenic mechanisms of IBD. In the cu...
Source: Journal of Food and Drug Analysis - July 11, 2018 Category: Food Science Source Type: research

Multivariate optimization of mebeverine analysis using molecularly imprinted polymer electrochemical sensor based on silver nanoparticles
Publication date: Available online 6 June 2018Source: Journal of Food and Drug AnalysisAuthor(s): Azizollah Nezhadali, Golnar Ahmadi BonakdarAbstractThin film of a moleculary imprinted polymer (MIP) based on electropolymerization method with sensitive and selective binding sites for mebeverine (MEB) was developed. This film was cast on pencil graphite electrode (PGE) by electrochemical polymerization in solution of pyrrole (PY) and template MEB via cyclic voltammetry scans and further electrodeposition of silver nanoparticles (AgNPs). Several parameters controlling the performance of the silver nano particles MIP pencil gr...
Source: Journal of Food and Drug Analysis - July 11, 2018 Category: Food Science Source Type: research