SDRP Journal of Food Science & Technology最新文献

{"title":"Preparation of ACE inhibitory peptides from Tenebrio molitor and antibacterial activity","authors":"Ai-Dong Sun, Nan Cui, Yue Zhu, Ning Zhu, Fen-mei Li, Jianfei Sun","doi":"10.25177/JFST.4.3.RA.481","DOIUrl":"https://doi.org/10.25177/JFST.4.3.RA.481","url":null,"abstract":"This research aimed to obtain active peptides that exert remarkable inhibitory effects on Angiotensin-converting enzyme (ACE). The ACE inhibitory peptides from T. molitor were were prepared by hydrolyzing Tenebrio molitor powders with papain, separated by using ultrafiltration membranes. Five molecular weight fractions were obtained. Sephadex G-15 was used to separate the fraction with molecular weight < 3 kDa through the different concentrations of the enzyme solutions. Results showed that 100 mg/mL was the optimal concentration, and the elution peaks were divided into three groupsM1,M2,M3. The M2 component showed the highest activity,which was analyzed and found to be abundant and diverse. The molecular weight of M2, which was composed of three amino acid residues. The inhibitory activities of the enzymatic hydrolysis solution, the ultrafiltration component, and the chromatography component against indicator bacteria were measured. The enzymatic hydrolysis solution and the component >30 kDa in molecular weight exhibited inhibitory effects on the three indicator bacteria.","PeriodicalId":269546,"journal":{"name":"SDRP Journal of Food Science & Technology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127370195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PET Imaging in Pancreatic Cancer","authors":"Xiaohui Wang, Yumin Li, Sift Desk Journals Open Access Journals","doi":"10.25177/JFST.4.3.RA.493","DOIUrl":"https://doi.org/10.25177/JFST.4.3.RA.493","url":null,"abstract":"Early accurate detection of pancreatic cancer is still a challenge for current medicine. Compared to conventional anatomical imaging techniques, PET can provide information on tumor function, and PET/CT is increasingly used in detecting and staging of cancer as single \"one stop shop\" method. In this review, we summarize current PET molecular imaging tracers or probes for pancreatic cancer detection, and a perspective of the future trend of pancreatic cancer target-specific probes in the clinic is also provid-","PeriodicalId":269546,"journal":{"name":"SDRP Journal of Food Science & Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130583329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of Key Techniques for Ethanol Extraction of Camellia Seed Oil by Response Surface Experiment","authors":"Liu Yijun, Yijun Liu, Y. Liang, Xiaofei Li, Li Jihua, Sift Desk Journals Open Access Journals","doi":"10.25177/JFST.4.2.RA.475","DOIUrl":"https://doi.org/10.25177/JFST.4.2.RA.475","url":null,"abstract":"The ethanol extraction method was utilized to extract the oil from camellia seed oil. Single-factor tests were applied to study the effects of ethanol concentration, material/solvent ratio and extraction temperature on the yield of camellia seed oil. Then, response surface methodology (RSM) was conducted to ascertain the optimum condition for oil extraction, and the fatty acid composition of the oil were analyzed. Results indicated that the optimal parameters of extraction were using ethanol concentration 100%, material/solvent ratio 1:12 and extraction temperature 90 °C. Under these conditions, the extraction yield was high up 45.36%(v/w).According to the results of GC-MS analysis, the camellia seed oil was composed of eight kinds of fatty acids. The content of 10-Octadecenoic acid was 77.57%. Calculating via the area normalization method, the unsaturated fatty acid accounted for 88.01% (w/w) of the total amount of oil. Therefore, the camellia seed oil was a kind of nutritional oil with a high development potential.","PeriodicalId":269546,"journal":{"name":"SDRP Journal of Food Science & Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113965831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biochemical changes in sunflower plant exposed to silver nanoparticles / silver ions","authors":"R. Gooneratne, Nadir Saleeb, B. Robinson, J. Cavanagh, A. K. M. Mofasser, Sift Desk Journals Open Access Journals","doi":"10.26091/ESRNZ.9505295.V1","DOIUrl":"https://doi.org/10.26091/ESRNZ.9505295.V1","url":null,"abstract":"When soil is contaminated with silver (Ag), plants take up Ag and is concentrated in roots and leaves, with its effects reflected in crop health and yield. This study investigated the toxicity of silver nanoparticles (AgNPs) and silver nitrate (AgNO3 as Ag+) to sunflower seeds grown in soils amended with 150 mg/kg of Ag either as AgNPs or AgNO3. Exposure of the sunflower seeds to soils amended with Ag increased plant lipid peroxidation, activities of antioxidants enzymes (catalase, superoxide dismutase, glutathione-S-transferase), peroxidases (glutathione peroxidase pyrogallol peroxidase, guaiacol peroxidase), oxidases (ascorbate oxidase), urease, total phenolic compounds, vitamins (retinols, alpha-tocopherol and L-ascorbic acid) but inhibited chlorophyll, total carotenoids, total soluble carbohydrates, phenolic compounds and total soluble proteins. In general, AgNO3 increased the above-mentioned parameters in sunflower more than did AgNPs, except for the tested vitamins, which were more affected by AgNPs. The results showed that Ag accumulation in the root > leaf > stem and human food security risk is enhanced in sunflower seeds exposed to Ag compounds.","PeriodicalId":269546,"journal":{"name":"SDRP Journal of Food Science & Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129976647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of SclR on metabolite production in Aspergillus oryzae","authors":"F. Jin, Bao-Teng Wang, Zhi-Min Zhang, M. Zhuang, Long Jin, Sift Desk Journals Open Access Journals","doi":"10.25177/jfst.4.2.ra.476","DOIUrl":"https://doi.org/10.25177/jfst.4.2.ra.476","url":null,"abstract":"Aspergillus oryzae, an industrially important fungus utilized for the traditional fermentative manufacturing, produces diverse metabolites and enzymes during fermentation. In our previous study, we have ever identified and characterized a basic helix-loop-helix (bHLH) transcription factor, SclR, and found that the transcription factor is importantly involved in the conidiation, sclerotial formation, and hyphal morphology in A. oryzae. In this study, we further analyzed the effect of SclR on metabolites production in A. oryzae. The control strain and ∆sclR strain were cultivated in dextrin-polypeptone-yeast extract (DPY) liquid medium at 30 °C for 3 days and metabolites were extracted from strains. Liquid chromatography–mass spectrometry (LC-MS) analysis result showed that a total of 1,855 precursor molecules were obtained in the positive ion mode and 2,475 precursor molecules were obtained in the negative ion mode. Comparative analysis of the metabolome indicated that 259 were differentially expressed metabolites. Among of them, 161 metabolites were increased by 1.5-fold, and 98 metabolites were decreased by 1.5-fold in an sclR gene deletion strain compared to the control. Further identification of differentially expressed metabolites revealed that the production level of some organic acids, amino acids, and sugar alcohols were markedly changed in ∆sclR strain relative to control strain. Especially, some organic acids were identified to be intermediates in the citric acid cycle, which is a key metabolic pathway that connects carbohydrate, fat, and protein metabolism. The result also implied that the SclR is potentially involved in energy metabolism.","PeriodicalId":269546,"journal":{"name":"SDRP Journal of Food Science & Technology","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134010751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Isolation and Identification of procyanidins in Aronia Melanocarpa Using NMR, LC-IT-TOF/MS/MS and MALDI-TOF MS","authors":"Ai-Dong Sun, Yue Zhu, Yu-long Wei, Jia-ying Zhang, Nan Zhang, Yu-qing Lei, Zhilin Gan, Sift Desk Journals Open Access Journals","doi":"10.25177/JFST.4.1.RA.444","DOIUrl":"https://doi.org/10.25177/JFST.4.1.RA.444","url":null,"abstract":"Aronia melanocarpa berries procyanidins (Amps) were divided in three fractions: ethyl acetate phase extract of Amps (E-Amps), aqueous phase extract of Amps (W-Amps), and methanol phase extract of Amps (M-Amps). Flavan-3-ol monomers and oligomeric procyanidins were isolated from E-Amps using Sephadex LH-20 column chromatography and reversed-phase preparative HPLC. H and C NMR analyses indicated five flavan-3-ol monomers and oligomeric procyanidins: (+)catechin, (‒)epicatechin, procyanidin B2 [EC-(4β→8)-EC], procyanidin B1 [EC-(4β→8)-C], and procyanidin C1 [EC-(4β→8)-EC-(4β→8)-EC]. MALDI-TOF-MS analysis demonstrated that the structure units of polymeric Amps, which were linked by B-type bonds, contained only catechin and epicatechin. In addition, the degree of polymerization was from pentamer to twenty-two polymer. Five flavan-3-ol monomers and oligomeric procyanidins had strong antioxidant activities. The DPPH and ABTS free-radical scavenging capacities followed the order: flavan-3-ol monomers > dimeric procyanidins > trimeric procyanidins > ascorbic acid. However, FRAP values increased with a degree of polymerization.","PeriodicalId":269546,"journal":{"name":"SDRP Journal of Food Science & Technology","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133981511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crystal engineering of fisetin: a step towards improved biopharmaceutical parameters","authors":"R. Chadha, Yashika Bhalla, K. Chadha, M. Karan, Sift Desk Journals Open Access Journals","doi":"10.25177/JFST.4.2.RA.461","DOIUrl":"https://doi.org/10.25177/JFST.4.2.RA.461","url":null,"abstract":"","PeriodicalId":269546,"journal":{"name":"SDRP Journal of Food Science & Technology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131196761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physicochemical properties and the extraction process of natural melanin from Auricularia polytricha","authors":"Junsheng Fu, Xin Liu, Ruolin Hou, Yiping Huang, Kaiqiang Xu, Xiaoping Wu, Wenxiong Lin, Mingfeng Zheng, Sift Desk Journals Open Access Journals","doi":"10.25177/JFST.4.1.2","DOIUrl":"https://doi.org/10.25177/JFST.4.1.2","url":null,"abstract":"Auricularia polytricha (A. polytricha) is a kind of edible fungus with high nutritional value, and melanin is one of its main active components. However, the research and application of melanin in A. polytricha has been neglected for a long time. The purpose of this study was to analyse the physicochemical properties of the melanin from A. polytricha and establish a cellulase-ultrasonic synergistic extraction process of A. polytricha melanin by orthogonal array and response surface design. Scanning electron microscopy (SEM), ultraviolet-visible spectroscopy (UV-Vis), infrared spectroscopy (IR), electron paramagnetic resonance spectroscopy (EPR) and elemental analysis were used to characterize the melanin. The stability and antioxidant activity of the melanin were also measured. The results showed that A. polytricha melanin is an eumelanin and displays a bulk amorphous morphology. The melanin had good stability in heat and light, and it also exhibited good antioxidant activity. The optimized extraction process of A. polytricha melanin was as follows: enzyme-tosubstrate ratio (E/S) of 1.4%, enzymolysis temperature of 35°C, enzymolysis pH of 4.0, enzymolysis time of 80 min, NaOH concentration of 0.68 mol/L, solid-to-liquid ratio of 1:40 (g/mL), ultrasound power of 350 W, ultrasonic time of 62 min, and ultrasound temperature of 70°C. The results will be helpful for the efficient production of A. polytricha melanin and its application as a food colouring as well as antioxidant agent.","PeriodicalId":269546,"journal":{"name":"SDRP Journal of Food Science & Technology","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123736774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Field Heat Reduction Methods on Fresh and Processing Qualities of Red and Russet Potato Cultivars","authors":"S. Jayanty, Esam Emragi, D. Holm","doi":"10.25177/jfst.6.2.ra.10747","DOIUrl":"https://doi.org/10.25177/jfst.6.2.ra.10747","url":null,"abstract":"The effect of three field heat reduction methods, including temperature lowering stepwise (TLS), temperature lowering gradually (TLG), and temperature lowering immediately (TLI), after harvesting on the quality of Russet Norkotah 3 and red skin numbered line CO 07102-1R potatoes were investigated. The tubers were analyzed at harvest (0 time), when they reached 3 °C, and after 6 months of storage at 3 °C for physiological weight loss, firmness, wound healing, total phenolics content, reducing sugars, and color of french fries. The results indicated that weight and firmness losses were lower under the TLS reduction method after 6 months of storage than TLG and TLI methods. The weight loss in TLS is 12%, TLG 14% and TLI 17% in CO 07102-1R whereas Russet Norkotah TLS is 4%, TLG 6%, and TLI 8% respectively. Wound healing was more effective using the TLS reduction method, especially in Russet Norkotah 3. French fry color was lighter at harvest (USDA grade 0), while there were no differences in the color of French fries prepared from tubers stored under the TLS and TLG methods (both had USDA grade 2). French fries were darker for tubers from the TLI method (USDA grade 4). The total phenolic content and reducing sugars were significantly increased in the TLI field heat reduction method. Keywords: Potato, Storage management, Wound healing, Weight loss, French fry","PeriodicalId":269546,"journal":{"name":"SDRP Journal of Food Science & Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126263440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Organic Selenium on Laying Performance, Selenium Absorption and Utilization, Antioxidant Activity and Immunity in Laying Hens","authors":"Weixian Zhang, Zhengzhou P.R. China Economy, C. Pan, Yong Li, Liang Zheng, H. Deng, Zhifang Shi","doi":"10.25177/jfst.6.2.ra.10749","DOIUrl":"https://doi.org/10.25177/jfst.6.2.ra.10749","url":null,"abstract":"To study on influences of organic selenium on laying performance, Se absorption and utilization, immunity and antioxidant activity, 400（laying rates 85%）hens during the period of 43-week were randomly allocated to 1 of 4 homogeneous treatments： (control treatment，no added Se feed; Na selenite, 0.3 mg Se/kg; yeast selenium, 0.3 mg Se/kg and DL-methionine selenium 0.3 mg Se/kg). Every treatment had 10 replicates, every replicate had 5 hencoops and every hencoop had 2 hens. We hypothesized that organic selenium was better than inorganic selenium, and DL-selenium had advantages over them of yeast selenium in some ways for laying hens. The experiment lasted for 77 d, with the first 7 d for adaptation. Egg production, laying rates and dry matter intake were recorded every day. And Se contents of serum, whole eggs, heart and liver, blood antioxidant and immunity index were analyzed in the 78th d of the study. The results showed Se sources had no significant effects on laying performance and eggs qualities （ P ＞ 0.05 ）, except for the groups of organic selenium increased egg mass or had trends of increasing laying rates compared with the groups of control and inorganic selenium in the tenth week significantly respectively（P﹤0.05 or P=0.07, P=0.06 and P=0.08）. The groups of organic selenium had increased the contents of Se in serum, whole eggs, heart and liver very significantly（P﹤0.01）；and increased glutathione peroxidase activity and antioxidant capacity significantly（P﹤0.05）. At same time, the groups of organic selenium had increased significantly or had trends to increase the immunoglobulin G in serum（P ﹤0.05 or P=0.05）. In a word, adding organic selenium in diets could improve laying performance, strengthen Se absorption and utilizations, antioxidant capacity and immunity of laying hens to the extent in a longer experiment. And the effects of DL-selenium had advantages over them of yeast selenium in some ways. It implicated that DL-selenium was benefited to production of laying hens and selenium-enriched eggs. Key words： Selenium；Laying performance; Absorption and utilization；Antioxidant activity; Immunity Summary text: Selenium is an essential mineral not only for animal nutrition, but also for humans’ nutrition. Organic selenium had more advantages in improvement of laying performance, Se absorption and utilizations, antioxidant capacity and immunity of laying hens. Especially, DL-selenium was a valuable product, which was benefits to improve production of laying hens and develop functional food, selenium-enriched eggs.","PeriodicalId":269546,"journal":{"name":"SDRP Journal of Food Science & Technology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124976845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}