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Extraction, isolation, identification, and bioactivity of polysaccharides from Antrodia cinnamomea 肉桂多糖的提取、分离、鉴定及生物活性研究
3区 农林科学 Q2 Agricultural and Biological Sciences Pub Date : 2023-10-27 DOI: 10.15586/qas.v15i4.1341
Jia-ning Dai, Bo-ling Liu, Dan Ji, Lei Yuan, Wen-yuan Zhou, Hua-xiang Li
Antrodia (A) cinnamomea is a precious edible and medicinal mushroom and has attracted attention because of its rare resources and unique bioactivities. The bioactive compounds from the fruit body, mycelium, and fermentation broth of A. cinnamomea include triterpenoids, polysaccharides, antroquinonols, benzenoids, and succinic and maleic acid derivatives. Among these, polysaccharides are very important and are high-content bioactive compounds. The A. cinnamomea polysaccharides (APSs) present numerous biological activities, such as antiviral, anticancer, anti-inflammatory, antivascular, immunoregulation, antioxidant, and nerve protection. However, only few studies have focused only on APSs so far. Therefore, the cultivation methods, extraction, isolation, composition, structure, biological activity, and application of APSs are summarized in this review to provide a comprehensive and convenient reference for further research and development on APSs.
肉桂Antrodia (A) cinnamomea是一种珍贵的食药用菌,因其资源稀少和独特的生物活性而备受关注。肉桂子实体、菌丝体和发酵液中的生物活性化合物包括三萜、多糖、蒽醌醇、苯类、琥珀酸和马来酸衍生物。其中,多糖是非常重要的高含量生物活性化合物。肉桂多糖(APSs)具有抗病毒、抗癌、抗炎、抗血管、免疫调节、抗氧化和神经保护等多种生物活性。然而,到目前为止,仅针对aps的研究很少。因此,本文就黄芪多糖的培养方法、提取、分离、组成、结构、生物活性及应用等方面进行综述,以期为黄芪多糖的进一步研究和开发提供全面、方便的参考。
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引用次数: 0
Antimicrobial mechanism and biocontrol effect of Bacillus cereus XZ30-2 on Aspergillus niger 蜡样芽孢杆菌XZ30-2对黑曲霉的抑菌机理及生防效果
3区 农林科学 Q2 Agricultural and Biological Sciences Pub Date : 2023-10-27 DOI: 10.15586/qas.v15i4.1379
Yanjie Yi, Zhipeng Hou, Qian Yang, Liuqing Cui, Heng Lu, Ruifang Li, Yang Liu, Yuyanqiao Zhang, Yuan Chen
Aspergillus niger is a major mold-causing spoilage in cereals, fruits and vegetables. Controlling of mold in stored grains is essential for safety of food. Currently, application of microorganisms to control A. niger is a safer and more effective method. In this study, strain XZ30-2 against A. niger was isolated and identified as Bacillus cereus according to morphological and biochemical characteristics as well as 16 Svedberg ribosomal ribonucleic acid (16S rRNA) gene sequence analysis. The investigation of action mechanism showed XZ30-2 culture filtrate caused the mycelia inflated or contract, increasing the membrane permeability, leading to the intracellular leakage and nucleic acids release, disrupting the proton pump, decreasing the ergosterol content, inducing the membrane lipid peroxidation and reactive oxygen species (ROS) accumulation in A. niger. Moreover, B. cereus XZ30-2 culture filtrate could produce hydrolases and lipopeptides, including iturin, surfactin and fengycin. This work also evaluated the control effect of XZ30-2 on A. niger in wheat grains, and indicated that 40 μL/g of culture filtrate significantly controlled the infection of A. niger. Therefore, B. cereus XZ30-2 can be developed as a biological agent for controlling A. niger in stored grains.
黑曲霉是引起谷物、水果和蔬菜变质的主要霉菌。控制储粮中的霉菌对食品安全至关重要。目前,应用微生物防治黑曲霉是一种较为安全有效的方法。本研究分离到一株抗黑曲霉的菌株XZ30-2,根据其形态和生化特征,以及16个Svedberg核糖体核糖核酸(16S rRNA)基因序列分析,鉴定为蜡样芽孢杆菌。作用机制研究表明,XZ30-2培养滤液使黑曲霉菌丝膨胀或收缩,增加膜通透性,导致胞内渗漏和核酸释放,破坏质子泵,降低麦角甾醇含量,诱导膜脂过氧化和活性氧(ROS)积累。此外,蜡样芽孢杆菌XZ30-2培养滤液可产生水解酶和脂肽,包括iturin、surfactin和fengycin。本研究还评价了XZ30-2对小麦黑穗病的防治效果,结果表明,40 μL/g培养滤液对黑穗病的防治效果显著。因此,蜡样芽孢杆菌XZ30-2可作为防治储粮中黑曲霉的生物制剂。
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引用次数: 1
Exploring the efficacy of Shexiang Tongxin extract pills in severe heart failure 探讨麝香通心浸膏丸治疗重度心力衰竭的疗效
3区 农林科学 Q2 Agricultural and Biological Sciences Pub Date : 2023-10-16 DOI: 10.15586/qas.v15i4.1340
Yanping Zeng, Weixing Ma, Hua Xue, None Xiaohui Ren, None Guanfeng Zhu, None Keming Xiao, None Zhenhua Jiang
The clinical efficacy of Shexiang Tongxin pills (STP) on cardiac function, inflammation, and prognosis was investigated in patients with severe heart failure. A total of 140 patients with severe heart failure, diagnosed and treated at the Shaoxing Central Hospital and its affiliates, were divided into control and experimental groups. Patients in the control group received conventional treatment, while those in the experimental group were given STP plus conventional treatment. The cardiac functions, levels of inflammatory factors, and outcomes of 6-minute walk distance (6MWD) were assessed and compared after 12 weeks of intervention. Besides, the rehospitalization and mortality proportions were also determined during a 1-year follow-up. In addition, oxygen-glucose deprivation and reperfusion (OGD/R) were conducted to mimic the injury of H9c2 cells in heart failure; cell survival, cytotoxicity, apoptosis, and inflammatory factors were also evaluated. Post-intervention, patients in the experiment group demonstrated greater improvement in cardiac functions, especially regarding left ventricular end-diastolic diameter and N-terminal pro-B-type natriuretic peptide, which were significantly decreased, while left ventricular ejection fraction was significantly increased (P < 0.05). Further, the levels of inflammatory factors, including tumor necrosis factor-α, hypersensitive C-reactive-protein, and interleukin 6, were significantly lower (P < 0.05), and a superior 6MWD outcome was observed in patients from the experimental group, compared to the control group (P < 0.05). After 1-year follow-up, both rehospitalization rate and mortality were significantly decreased in the experimental group, compared to the control group (rehospitalization, 38.57% vs. 55.71%, and mortality, 12.86% vs. 27.14%, respectively; P < 0.05). Furthermore, STP increased cell survival and reduced cell apoptosis, cytotoxicity, and inflammatory response in cardiomyocytes induced by OGD/R. Shexiang Tongxin pill demonstrated significant and promising clinical effects in treating severe heart failure by ameliorating cardiac functions, reducing inflammatory factor levels, and improving patients’ prognosis. In addition, STP ameliorated cellular damage and inflammation at cellular level. Thus, STP demonstrated important clinical values.
观察麝香通心丸对重度心力衰竭患者心功能、炎症及预后的临床疗效。共有140名在绍兴市中心医院及其附属医院诊断和治疗的严重心力衰竭患者被分为对照组和实验组。对照组患者给予常规治疗,实验组患者给予STP加常规治疗。在干预12周后,评估并比较心功能、炎症因子水平和6分钟步行距离(6MWD)的结果。随访1年,再住院率和死亡率。采用氧糖剥夺再灌注(OGD/R)模拟心力衰竭时H9c2细胞的损伤;细胞存活、细胞毒性、细胞凋亡和炎症因子也进行了评估。干预后,实验组患者心功能有较大改善,尤其是左室舒张末期内径和n端前b型利钠肽显著降低,左室射血分数显著升高(P <0.05)。此外,炎症因子,包括肿瘤坏死因子-α、超敏c反应蛋白和白细胞介素6的水平显著降低(P <0.05),实验组患者的6MWD预后优于对照组(P <0.05)。随访1年后,实验组患者再住院率和死亡率均较对照组显著降低(再住院率分别为38.57%对55.71%,死亡率分别为12.86%对27.14%;P & lt;0.05)。此外,STP提高了细胞存活率,减少了OGD/R诱导的心肌细胞凋亡、细胞毒性和炎症反应。麝香通心丸在改善心功能、降低炎症因子水平、改善患者预后等方面具有显著的临床疗效。此外,STP在细胞水平上改善了细胞损伤和炎症。因此,STP具有重要的临床价值。
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引用次数: 0
Investigation of meat species adulteration in beef-based meat products via real-time PCR in Türkiye 利用实时荧光定量PCR技术对<s:1>基耶省牛肉肉制品中肉类种类掺假的调查
3区 农林科学 Q2 Agricultural and Biological Sciences Pub Date : 2023-10-07 DOI: 10.15586/qas.v15i4.1374
Hayrunnisa Özlü, Burak Çevik, Mustafa Atasever, Muhammet Furkan Sarıalioğlu, Betül Alkan Polat
The addition of poultry and other meats to products made from 100% beef is prohibited in Türkiye. In addition, in Türkiye, where the majority of the population is Muslim, the use of pork and single-hoofed meat is a matter of concern due to religious reasons. This study utilized a sensitive and specific real-time polymerase chain reaction (PCR) method to identify the different meat species in meat products marketed as 100% beef and sold in the eastern Türkiye provinces of Erzurum, Erzincan, Kars, Ağrı, and Bingöl. The real-time PCR method was used to investigate the presence of DNA specific to six animal species (chicken, turkey, pork, horse, donkey, and camel). The analysis revealed no traces of horse, donkey, camel, or pork meat in any of the 100 samples of Turkish fermented sausage (sucuk), salami, and sausage. Contrary to the product labels claiming 100% beef content, poultry DNA residues were identified in a salami sample from Erzincan, while turkey DNA residues were found in sucuk samples from both Ağrı and Kars. The study’s findings reveal that contrary to label information, various types of meat can be present in meat products sold by both trademarked and local butchers. Consequently, this paper emphasizes the need for routine checks on market-sold products to ensure they comply with legislation and avoid consumer deception. Furthermore, the Real-Time PCR method, with its rapid results and high sensitivity, is deemed beneficial for food safety, consumer rights, and the prevention of unfair competition.
日本禁止在100%牛肉制成的产品中添加家禽和其他肉类。此外,在大多数人口是穆斯林的基耶省,由于宗教原因,猪肉和单蹄肉的使用是一个令人担忧的问题。本研究利用一种灵敏、特异的实时聚合酶链反应(PCR)方法,鉴定了在东部基耶省埃尔祖鲁姆、埃尔津詹、卡尔斯、Ağrı和Bingöl等地销售的100%牛肉肉制品中的不同肉类品种。采用实时荧光定量PCR方法对鸡、火鸡肉、猪肉、马、驴、骆驼等6种动物进行特异性DNA检测。分析显示,在100份土耳其发酵香肠(sucuk)、意大利腊肠和香肠样本中,没有任何马肉、驴肉、骆驼肉或猪肉的痕迹。与产品标签上声称的100%牛肉含量相反,在Erzincan的腊肠样品中发现了家禽DNA残留,而在Ağrı和Kars的sucuk样品中发现了火鸡DNA残留。研究结果显示,与标签信息相反,商标肉店和当地肉店出售的肉制品中可能存在各种类型的肉。因此,本文强调需要对市场销售的产品进行例行检查,以确保它们符合法律规定,避免欺骗消费者。此外,Real-Time PCR方法具有快速结果和高灵敏度,被认为有利于食品安全、消费者权益和防止不正当竞争。
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引用次数: 0
Prevalence of anterior nares colonization of Palestinian diabetic patients with Staphylococcus aureus or methicillin-resistant Staphylococcus aureus 巴勒斯坦糖尿病患者鼻腔前定植金黄色葡萄球菌或耐甲氧西林金黄色葡萄球菌的患病率
3区 农林科学 Q2 Agricultural and Biological Sciences Pub Date : 2023-10-05 DOI: 10.15586/qas.v15i4.1380
Muna M Abbas, Motasim Almasri, Alaeddin Abu-Zant, Shadi Sharef, Sara Mahajne, Khalil Kananbi
Staphylococcus aureus (S. aureus) is an opportunistic pathogen that colonizes the anterior nares of about one-third of the human population. Anterior nares colonization with S. aureus or methicillin-resistant S. aureus (MRSA) allows these pathogens to colonize the skin and other anatomical locations. Accordingly, these pathogens may cause different types of endogenous infections. To investigate the prevalence of nasal carriage of S. aureus or MRSA among Palestinian diabetic patients, nasal swabs were taken from 151 diabetic patients, about to undergo invasive surgeries. Thirty-five patients (35.1% of the total patients) were found to be colonized with S. aureus, of which 14 (9.7% of the total patients) were found to be colonized with MRSA. These proportions were higher than those described for the general population (30% and 1.3%, respectively) or even for Palestinian patients in general (25.9% and 2%, respectively). In addition, the proportion of nasal carriage of S. aureus or MRSA among Palestinian diabetic patients was found to be higher than that described for diabetic patients in other countries. Meanwhile, 30 of the 53 isolates (57% of the total isolates) were also found to be multidrug-resistant. Accordingly, the proportion of anterior nares colonization with S. aureus or MRSA in Palestinian diabetic patients was remarkably high.
金黄色葡萄球菌(金黄色葡萄球菌)是一种机会致病菌,大约三分之一的人口在鼻腔前定植。前鼻孔定植金黄色葡萄球菌或耐甲氧西林金黄色葡萄球菌(MRSA)使这些病原体定植在皮肤和其他解剖部位。因此,这些病原体可能引起不同类型的内源性感染。为了调查巴勒斯坦糖尿病患者中金黄色葡萄球菌或MRSA鼻腔携带的流行情况,对151例即将接受有创手术的糖尿病患者进行鼻拭子采集。35例(35.1%)患者检出金黄色葡萄球菌,其中14例(9.7%)患者检出MRSA。这些比例高于一般人群(分别为30%和1.3%),甚至高于一般巴勒斯坦患者(分别为25.9%和2%)。此外,巴勒斯坦糖尿病患者鼻腔携带金黄色葡萄球菌或MRSA的比例高于其他国家糖尿病患者。同时,53株分离株中有30株(占总分离株的57%)也被发现具有多重耐药。因此,巴勒斯坦糖尿病患者鼻腔前定植金黄色葡萄球菌或MRSA的比例非常高。
{"title":"Prevalence of anterior nares colonization of Palestinian diabetic patients with Staphylococcus aureus or methicillin-resistant Staphylococcus aureus","authors":"Muna M Abbas, Motasim Almasri, Alaeddin Abu-Zant, Shadi Sharef, Sara Mahajne, Khalil Kananbi","doi":"10.15586/qas.v15i4.1380","DOIUrl":"https://doi.org/10.15586/qas.v15i4.1380","url":null,"abstract":"Staphylococcus aureus (S. aureus) is an opportunistic pathogen that colonizes the anterior nares of about one-third of the human population. Anterior nares colonization with S. aureus or methicillin-resistant S. aureus (MRSA) allows these pathogens to colonize the skin and other anatomical locations. Accordingly, these pathogens may cause different types of endogenous infections. To investigate the prevalence of nasal carriage of S. aureus or MRSA among Palestinian diabetic patients, nasal swabs were taken from 151 diabetic patients, about to undergo invasive surgeries. Thirty-five patients (35.1% of the total patients) were found to be colonized with S. aureus, of which 14 (9.7% of the total patients) were found to be colonized with MRSA. These proportions were higher than those described for the general population (30% and 1.3%, respectively) or even for Palestinian patients in general (25.9% and 2%, respectively). In addition, the proportion of nasal carriage of S. aureus or MRSA among Palestinian diabetic patients was found to be higher than that described for diabetic patients in other countries. Meanwhile, 30 of the 53 isolates (57% of the total isolates) were also found to be multidrug-resistant. Accordingly, the proportion of anterior nares colonization with S. aureus or MRSA in Palestinian diabetic patients was remarkably high.","PeriodicalId":20868,"journal":{"name":"Quality Assurance and Safety of Crops & Foods","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135483971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Valorized pineapple waste by conventional and energy-saving ohmic extraction: potentially toxic elements and mycotoxin contamination 传统和节能欧姆萃取法处理菠萝废弃物:潜在有毒元素和霉菌毒素污染
3区 农林科学 Q2 Agricultural and Biological Sciences Pub Date : 2023-10-03 DOI: 10.15586/qas.v15i4.1361
Mohsen Gavahian
Pineapple peel is a food waste with environmental concerns. It can be valorized by extracting its bioactive compound through conventional and emerging technologies such as ohmic heating. However, mycotoxins and heavy metals contaminations could be concerns of such a valorization process. This study assessed the effects of conventional and ohmic heating on selected aflatoxins and metal ions in pineapple peel extract using high- performance liquid chromatography (HPLC) and inductively coupled plasma mass spectrometry (ICP-MS). Also, energy consumption and environmental impacts of the ohmic process were analyzed. According to the results, the ohmic-based valorization system reduced energy consumption and greenhouse gas emissions by more than 83%, contributing to net-zero and sustainable development goals (SDGs). Aflatoxins B1, B2, G1, and G2 were below the detection limit (B1, G1: 0.2µg/kg; B2, G2: 0.1µg/kg). However, ohmic extracts contained higher concentrations of Cr, Pb, Ni, and Fe because of electrochemical reactions and electrode corrosion. Despite the capability of ohmic valorization systems, inspecting food waste and valorized products for hazardous chemicals and investing in durable electrodes (e.g., titanium) are among the considerations for ohmic systems’ industrial implementation.
菠萝皮是一种环境问题的食物浪费。它可以通过传统的和新兴的技术,如欧姆加热提取其生物活性化合物。然而,真菌毒素和重金属污染可能是这种增值过程的关注点。采用高效液相色谱(HPLC)和电感耦合等离子体质谱(ICP-MS)研究了传统加热和欧姆加热对菠萝皮提取物中黄曲霉毒素和金属离子的影响。分析了欧姆工艺的能耗和对环境的影响。结果表明,基于欧姆的增值系统降低了83%以上的能耗和温室气体排放,有助于实现净零排放和可持续发展目标(sdg)。黄曲霉毒素B1、B2、G1、G2均低于检出限(B1、G1: 0.2µg/kg;B2, G2: 0.1µg/kg)。然而,由于电化学反应和电极腐蚀,欧姆萃取液中含有较高浓度的Cr、Pb、Ni和Fe。尽管欧姆增值系统的能力,检查食物垃圾和危险化学品的增值产品和投资于耐用电极(例如,钛)是欧姆系统工业实施的考虑因素之一。
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引用次数: 2
Quality-grade analysis of velvet antler materials using ultra-weak delayed luminescence combined with chemometrics 超弱延迟发光结合化学计量学分析鹿茸材料的质量等级
3区 农林科学 Q2 Agricultural and Biological Sciences Pub Date : 2023-10-02 DOI: 10.15586/qas.v15i4.1311
Jianxun Zhu, Shasha Fan, Min He, Nan Wang, Xiaoru Xu, Jingxiang Pang, Yu Yan, Li Li, Jiale Yang, Wen-Te Chang, Tung-Ti Chang, Ye Zhao, Jinxiang Han, Mengmeng Sun
The pharmacological properties of velvet antler, a well-known animal-derived traditional Chinese medicine material and functional food, are extensively acknowledged globally. However, there are significant restrictions on the quality standard and control system of velvet antler. The four quality grades of velvet antler slices taken from Cervus nippon Temminck and Cervus elaphus Linnaeus were evaluated in this study using delayed luminescence (DL) and chemical analysis of protein and amino acid content. Our results demonstrated a significant degree of consistency in the assessment impacts of the measurements for identifying velvet antler slices of different quality grades from Cervus nippon Temminck and Cervus elaphus Linnaeus. Additionally, it is possible to distinguish velvet antler slices of Rangifer tarandus from those of other deer species by exploiting DL parameters (i.e., I0, Beta, Tau, and T). Moreover, there is a strong correlation between the DL parameters and particular amino acids detected in velvet antler slices. As an innovative, quick, and systematic methodology, DL enables the examination of the overall property of various grades of velvet antler slices. The integrated assessment using DL and chemical components can give a novel method for determining the quality of animal-derived herbs and functional foods.
鹿茸是一种著名的动物源性中药材和功能性食品,其药理特性在全球范围内得到广泛认可。然而,鹿茸的质量标准和控制体系存在很大的限制。采用延迟发光(DL)和蛋白质、氨基酸含量的化学分析方法,对日本鹿茸和林奈鹿茸的4个质量等级进行了评价。我们的研究结果表明,不同质量等级鹿茸片在鉴定鹿茸片上的测量结果具有显著的一致性。此外,利用DL参数(即I0、Beta、Tau和T)可以将Rangifer tarandus鹿茸片与其他鹿种鹿茸片区分开来,并且DL参数与鹿茸片中检测到的特定氨基酸之间存在很强的相关性。作为一种创新的,快速的,系统的方法,DL能够检查各种等级鹿茸切片的整体性能。利用DL和化学成分相结合的评价方法可以为动物源性中药和功能食品的质量评价提供一种新的方法。
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引用次数: 0
Tectorigenin suppresses the viability of gastric cancer cells in vivo and in vitro 鸢尾黄素在体内和体外均抑制胃癌细胞的活力
3区 农林科学 Q2 Agricultural and Biological Sciences Pub Date : 2023-09-21 DOI: 10.15586/qas.v15i3.1357
Wenchong Song, Weiwei Lv, Ning Bi, Guanglin Wang
Gastric cancer is currently the 4th most common malignant tumor with a poor prognosis in 2022. New and effective drugs are needed to combat this disease to treat advanced gastric cancer. Tectorigenin (Tec) has a series of pharmacological activities, such as anti-inflammatory and anticancer. However, the effect of Tec on the progression of gastric cancer is unclear. In this study, we investigated the role of Tec in regulating cell viability, cell cycle, and tumor growth of gastric cancer. To detect the role of Tec in the progression of gastric cancer in vitro and in mice, we performed several in vitro assays such as MTT, colony formation, wound closure, transwell, Immunoblot assays, and in vivo tumor growth assays. Our data confirmed that Tec restrained the viability of gastric cancer cells at concentrations of 100, 200, and 300 μM. It also denied the motility of gastric cancer cells. Tec treatment also induced the cell cycle arrest of gastric cancer cells. Mechanically, Tec could suppress the activation of the PI3K/Akt pathway and stop gastric cancer progression. We, therefore, thought Tec could serve as a drug for treating gastric cancer.
胃癌是目前第四大最常见的恶性肿瘤,2022年预后较差。需要新的和有效的药物来对抗这种疾病,以治疗晚期胃癌。鸢尾黄素(Tectorigenin, Tec)具有抗炎、抗癌等一系列药理作用。然而,Tec对胃癌进展的影响尚不清楚。在本研究中,我们研究了Tec在胃癌细胞活力、细胞周期和肿瘤生长中的作用。为了检测Tec在体外和小鼠胃癌进展中的作用,我们进行了几种体外试验,如MTT、菌落形成、伤口闭合、transwell、免疫印迹试验和体内肿瘤生长试验。我们的数据证实,Tec在100、200和300 μM浓度下抑制胃癌细胞的活力。同时也否定了胃癌细胞的运动性。Tec还能诱导胃癌细胞周期阻滞。机械上,Tec可以抑制PI3K/Akt通路的激活,阻止胃癌的进展。因此,我们认为Tec可以作为治疗胃癌的药物。
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引用次数: 0
Effects of phenolic compounds of colored wheats on colorectal cancer cell lines 有色小麦酚类化合物对结直肠癌细胞系的影响
3区 农林科学 Q2 Agricultural and Biological Sciences Pub Date : 2023-09-04 DOI: 10.15586/qas.v15i4.1354
Zeynep Hazal Tekin-Cakmak, Vladamir P. Shamanin, Salih Karasu, Inna V. Pоtоtskaya, Sergey S. Shepelev, Alexandr S. Chursin, Alexey I. Morgounov, Mustafa Yaman, Osman Sagdic, Hamit Koksel
In this study, the different colored wheat brans were analyzed and compared for phenolic content (PC), phenolic compositions, and the total antioxidant capacity (TEAC) with methods based on the ability to eliminate radicals of 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS), 2,2-diphenyl-1-(2,4,6-trinitrophenyl) hydrazyl (DPPH), and anthocyanin compositions. This study also aims to characterize the bioactive components of wheat grain genotypes as well as to test the protective and rescuer effects of their extracts on colorectal cancer (CRC) cell lines. PCs in the bound insoluble fraction of red wheat bran, blue wheat bran, and purple wheat bran were determined as 369.60, 446.95, and 486.79 mg gallic acid equivalents (GAE)/100 g wheat bran, respectively, while strong relationships were detected between PC and antioxidant activity (DPPH and ABTS) results. HPLC anal-ysis of phenolic extracts demonstrated that ferulic acid was determined as the dominant phenolic acid in the bound fractions of red, purple, and blue wheats. In the free fractions, p-coumaric acid (11.55 µg/100 g wheat bran) was the dominant phenolic acid for red wheat bran, whereas ellagic acid (14.72 and 11.55 µg/100 g wheat bran) was the highest phenolic acid for purple and blue wheat brans, respectively. In bound fractions, ferulic acid was the highest phenolic acid for red (988.39 µg/100 g wheat bran), purple (1948.76 µg/100 g wheat bran), and blue (2263.96 µg/100 g wheat bran) wheat brans. On the other hand, Cyanidin-3-O-glucoside chloride was the predominant anthocyanin in free extracts of purple and blue wheat brans. In line with the antioxidant activities and phenolic acid concentrations, the blue wheat bran extracts increased CRC cell viability nonsignificantly in HT-29 and HCT-116 cell lines, whereas purple wheat bran extract had a significantly higher (P = 0.0361) rescuer effect compared to vehicle control under 50 µM H2O2 concentration. In conclusion, the in vitro data here show that blue and purple wheat brans are posing a novel means to increase the defense of cells against oxidative stress and cell death.
本研究以2,2′-氮基-双-3-乙基苯并噻唑啉-6-磺酸(ABTS)、2,2-二苯基-1-(2,4,6-三硝基苯)肼(DPPH)和花青素的自由基清除能力为基础,对不同颜色小麦麸皮的酚类含量(PC)、酚类成分和总抗氧化能力(TEAC)进行了分析和比较。本研究还旨在表征小麦籽粒基因型的生物活性成分,并测试其提取物对结直肠癌(CRC)细胞系的保护和拯救作用。红色麦麸、蓝色麦麸和紫色麦麸的结合不溶性部分的PC分别为369.60、446.95和486.79 mg没食子酸(GAE)/100 g麦麸,PC与抗氧化活性(DPPH和ABTS)结果密切相关。对红、紫、蓝小麦酚类提取物的高效液相色谱分析表明,阿魏酸是红、紫、蓝小麦结合部位的主要酚类酸。在游离馏分中,对香豆酸(11.55µg/100 g麦麸)是红色麦麸的主要酚酸,而鞣花酸(14.72和11.55µg/100 g麦麸)是紫色和蓝色麦麸中最高的酚酸。在结合馏分中,阿魏酸是红色(988.39µg/100 g麦麸)、紫色(1948.76µg/100 g麦麸)和蓝色(2263.96µg/100 g麦麸)麦麸中酚酸含量最高的。紫麦麸和蓝麦麸游离提取物中花青素以3- o -葡萄糖苷氯为主。与抗氧化活性和酚酸浓度一致,蓝色麦麸提取物对HT-29和HCT-116细胞株CRC细胞活力的提高不显著,而在50µM H2O2浓度下,紫色麦麸提取物的拯救作用显著高于对照(P = 0.0361)。总之,这里的体外数据表明,蓝色和紫色麦麸提供了一种新的手段来增加细胞对氧化应激和细胞死亡的防御。
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引用次数: 0
Mechanical properties of stem and physiological–biochemical responses of cucumber under different N and K conditions 不同氮、钾条件下黄瓜茎部力学特性及生理生化反应
IF 4 3区 农林科学 Q2 Agricultural and Biological Sciences Pub Date : 2022-02-07 DOI: 10.15586/qas.v14i1.1035
Yong Liu, Yafei Wang, Guoxin Ma, Bin Wang, Xiaoxue Du, Qiang Shi, J. Ni, H. Mao
In order to investigate the effects of N and K on the mechanical properties of cucumber stems, the physiological and biochemical indexes under different N and K conditions were compared. The analysis showed that the pho-tosynthetic rate was affected by both stress and the self-senescence of cucumber plants, and that the crops under N and K stress were stimulated to activate a highly effective antioxidant system to cope with the damage. Sugar, as the basis for the synthesis and structure formation of the stems, was highly related to stem strength, and polyphenol oxidase in the study of stem strength was limited but indispensable. Compared with CK, the epidermal penetration strength under LN, LNLK, and LNHK treatments increased by at least 10%, while the strength under HN, LK, HNLK, and HNHK treatments decreased by at least 7%. To sum up, it was the photosynthesis rate, the sucrose transportation, as well as the futile cycling of K+ that were the keys of stem strength.
为了研究N和K对黄瓜茎部力学性能的影响,比较了不同N和K条件下的生理生化指标。分析表明,光合速率受到胁迫和黄瓜植株自身衰老的影响,在氮和钾胁迫下,作物受到刺激,激活了一个高效的抗氧化系统来应对损伤。糖作为茎的合成和结构形成的基础,与茎的强度高度相关,多酚氧化酶在茎的强度研究中是有限但不可或缺的。与对照相比,LN、LNLK和LNHK处理的表皮穿透强度至少增加了10%,而HN、LK、HNLK和HNHK处理的强度至少降低了7%。总之,光合作用速率、蔗糖运输以及K+的无效循环是茎强度的关键。
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Quality Assurance and Safety of Crops & Foods
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