Antioxidant potential

抗氧化潜能
  • 文章类型: Journal Article
    这项研究旨在检查掺入a菜(Amaranthusspinosus,无论是生的还是热处理的)对生长性能的影响,肉类抗氧化能力,血液生化参数,肠道组织形态计量学,和盲肠挥发性脂肪酸谱。在完全随机的设计中,共有210只雄性罗斯308只肉鸡被分配到五种饮食处理中,每个处理包括六个重复的七个鸟。对照组接受以玉米和豆粕为基础的日粮,而其余的饮食组被配制成与对照组等氮和等热量,在饮食中精确水平为10%和20%的原料或热处理过的a菜。在研究的第0、10、24和39天监测体重和采食量。在第39天,每个重复随机选择两只鸟进行血液采样,然后屠宰进行进一步的参数检查。与对照相比,在肉鸡日粮中掺入高达20%的刺猬对体重增加没有不利影响。然而,较高的a菜含量会对饲料转化率产生负面影响,归因于饲料摄入量增加。此外,补充a菜不会对car体产量或各种器官重量产生负面影响,除了小精灵,在以a菜为食的组中较重。值得注意的是,a菜补充剂减少了腹部脂肪,增强肉类抗氧化状态,对血液生化或血液学指标无不利影响。此外,a菜喂养导致血液甘油三酯水平降低,但对胆固醇水平没有影响。虽然a菜的热处理并没有显着改变肉鸡的性能,它增强了a菜摄食对十二指肠和回肠组织形态特征的有益作用,和增加血液IgG水平。盲肠挥发性脂肪酸谱在很大程度上不受a菜内含物的影响,尽管热处理过的a菜导致支链脂肪酸和戊酸的含量增加。总的来说,研究结果表明,当在日粮中含有10%的肉鸡时,刺梨是一种有前途的替代饲料成分。然而,还需要进一步的研究来调查不同种a菜的影响,加工方法和补充酶对家禽营养扩大其包合率。
    This study aimed to examine the effects of incorporating amaranth (Amaranthus spinosus, either raw or heat-treated) into broiler diets on growth performance, meat antioxidant capacity, haemato-biochemical parameters, intestinal histomorphometry, and cecal volatile fatty acid profile. A total of 210 male Ross 308 broiler chicks were allocated to five dietary treatments in a completely randomized design, with each treatment comprising six replicates of seven birds each. The control group received a diet based on maize and soybean meal, while the remaining dietary groups were formulated to be isonitrogenous and isocaloric to the control, with exact levels of 10% and 20% raw or heat-treated amaranth in the diet. Body weight and feed intake were monitored on days 0, 10, 24, and 39 of the study. On day 39, two birds per replicate were randomly selected for blood sampling, followed by slaughtering for further parameter examination. Incorporating A. spinosus up to 20% in broiler diets had no adverse effect on body weight gain compared to the control. However, higher levels of amaranth led to a negative impact on the feed conversion ratio, attributed to increased feed intake. Furthermore, amaranth supplementation did not negatively influence carcass yield or various organ weights, except for the gizzard, which was heavier in the amaranth-fed groups. Notably, amaranth supplementation reduced abdominal fat, enhanced meat antioxidant status, and had no detrimental effects on blood biochemical or hematological indices. Additionally, amaranth feeding resulted in decreased blood triglyceride levels but had no effect on cholesterol levels. While heat treatment of amaranth did not significantly alter the performance of broiler chickens, it enhanced the beneficial effects of amaranth feeding on the histomorphological features of the duodenum and ileum, and increased blood IgG levels. The cecal volatile fatty acid profile remained largely unaffected by amaranth inclusion, although heat-treated amaranth led to increased levels of branched-chain fatty acids and valerate. Overall, the findings suggest A. spinosus as a promising alternative feed ingredient for broilers when included at 10% of the diet. However, further research is needed to investigate the effect of various amaranth species, processing methods and enzyme supplementation on poultry nutrition to expand its inclusion rate.
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  • 文章类型: Journal Article
    纺织行业日益增长的活动一直要求寻找新的和创新的技术,以满足消费者对更可持续和生态过程的需求。功能受到更多关注。蜂产品以其广泛的特性而闻名,包括抗氧化和抗菌活性。蜂胶和蜂蜜是自古以来最受欢迎和使用的最多样化的应用,因为它们的健康益处。随着对更安全和更可持续做法的需求日益增加,由于其安全性和生态友好性,将天然产品用于功能性整理过程可能是合适的替代方案。为此,一种生物溶液,由蜂胶和蜂蜜在水中的混合物组成,用于进行棉针织物的功能整理,在存在和不存在钾明矾作为化学媒染剂的情况下。还在三个洗涤循环之后评价了牢度强度。生物溶液的抗氧化潜力,用体外ABTS清除试验评估,为纺织品提供了减少90%以上ABTS自由基的能力,无论媒染剂的存在,甚至经过三个洗涤周期。此外,生物功能纺织品降低了枯草芽孢杆菌的生长,痤疮丙酸杆菌,大肠杆菌,and,特别是,孵育24小时后的金黄色葡萄球菌培养物,使用钾明矾时抗菌活性增加。这些发现表明,蜂产品是有前途和有效的替代品,可用于纺织工业,以赋予棉纺织品抗氧化和抗菌性能,从而增强人类健康。
    The growing activity in the textile industry has been demanding the search for new and innovative technologies to meet consumers\' needs regarding more sustainable and ecological processes, with functionality receiving more attention. Bee products are known for their wide spectra of properties, including antioxidant and antibacterial activities. Propolis and honey are the most popular and used since ancient times for the most diverse applications due to their health benefits. With the increasing need for safer and more sustainable practices, the use of natural products for the functional finishing process can be a suitable alternative due to their safety and eco-friendly nature. For that, a biosolution, composed of a mixture of propolis and honey in water, was used to perform the functional finishing of cotton knits, both in the presence and in the absence of potassium alum as a chemical mordant. The fastness strength was also evaluated after three washing cycles. The antioxidant potential of the biosolution, assessed with the in vitro ABTS scavenging assay, provided textiles with the capacity to reduce more than 90% of the ABTS radical, regardless of the mordant presence and even after three washing cycles. Furthermore, biofunctional textiles decreased the growth of Bacillus subtilis, Propionibacterium acnes, Escherichia coli, and, particularly, Staphylococcus aureus cultures after 24 h of incubation with an increase in antibacterial activity when potassium alum was used. These findings show that bee products are promising and effective alternatives to be used in the textile industry to confer antioxidant and antibacterial properties to cotton textiles, thereby enhancing human health.
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  • 文章类型: Journal Article
    探究类黄酮衍生物在ESIPT工艺后的抗氧化潜力,为发现抗氧化能力较高的化合物提供了理论依据。在这项工作中,采用密度泛函理论(DFT)和时间相关密度泛函理论(TD-DFT)方法,探讨了两种柑橘源性柚皮素黄酮在ESIPT工艺后的抗氧化潜力。基于ESIPT过程的研究,包括IMHB强度变化,势能曲线,和过渡状态,由于超快ESIPT,这些分子仅以烯醇和酮形式存在。HOMO用于探索电子供体能力,证明酮形式的分子比烯醇形式的分子更强。此外,原子偶极矩校正的Hirshfeld种群(ADCH)和Fukui函数表明,酮形式的两个分子的亲电自由基攻击的位点分别是O3和O5',两者都比烯醇形式更活跃。总的来说,综合考虑类黄酮衍生物的ESIPT过程和抗氧化潜力,将有助于探索和设计具有更高抗氧化能力的物质。
    Exploring antioxidant potential of flavonoid derivatives after ESIPT process provides a theoretical basis for discovering compounds with higher antioxidant capacity. In this work, employing the density functional theory (DFT) and time-dependent density functional theory (TD-DFT) methods, the antioxidant potential of two citrus-derived naringenin flavonoids after ESIPT process is explored. Based on studies of ESIPT process including IMHB intensity variations, potential energy curves, and transition state, these molecules exist only in enol and keto⁎ forms due to ultra-fast ESIPT. The HOMOs are utilized to explore electron-donating capacity, demonstrating that the molecules in keto⁎ form is stronger than that in enol form. Furthermore, the atomic dipole moment corrected Hirshfeld population (ADCH) and Fukui functions indicate that the sites attacked by the electrophilic free radical of the two molecules in the keto⁎ form are O3 and O5\' respectively, and both are more active than in the enol form. Overall, a comprehensive consideration of the ESIPT process and antioxidant potential of flavonoid derivatives will facilitate the exploration and design of substances with higher antioxidant capacity.
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  • 文章类型: Journal Article
    在这项研究中,从InulasalicinaL.获得的脱脂甲醇提取物的UHPLC-HRMS分析导致鉴定了58种化合物-羟基肉桂酸和羟基苯甲酸及其糖苷,酰基奎尼酸和咖啡酰基己二酸,和类黄酮及其糖苷。此外,一种新的天然化合物,分离了N-(8-甲基萘佩汀)-3-羟基哌啶-2-酮,并通过NMR光谱阐明了其结构。现在首次描述了Inula属中黄体生物碱的存在。绿原酸是主要化合物,其次是3,5-,1,5-和4,5-二咖啡酰基奎尼酸。通过DPPH研究了甲醇提取物的抗氧化潜力,ABTS,和FRAP测定和防晒性能。此外,进行了一项研究以评估受试提取物抑制革兰氏阳性和革兰氏阴性菌株生物膜形成的有效性。结晶紫试验的结果显示,由于提取物,生物膜质量显著降低。通过活/死染色观察生物膜活力来确认抗生物膜功效。获得的结果表明,该植物提取物可用于开发具有抗菌和防晒性能的化妆品。
    In this study, UHPLC-HRMS analysis of the defatted methanol extract obtained from Inula salicina L. led to the identification of 58 compounds-hydroxycinnamic and hydroxybenzoic acids and their glycosides, acylquinic and caffeoylhexaric acids, and flavonoids and their glycosides. In addition, a new natural compound, N-(8-methylnepetin)-3-hydroxypiperidin-2-one was isolated and its structure was elucidated by NMR spectroscopy. The presence of a flavoalkaloid in genus Inula is described now for the first time. Chlorogenic acid was the main compound followed by 3,5-, 1,5- and 4,5-dicaffeoylquinic acids. The methanol extract was studied for its antioxidant potential by DPPH, ABTS, and FRAP assays and sun protective properties. In addition, a study was conducted to assess the effectiveness of the tested extract in inhibiting biofilm formation by Gram-positive and Gram-negative strains. Results from crystal violet tests revealed a notable decrease in biofilm mass due to the extract. The anti-biofilm efficacy was confirmed through the observation of the biofilm viability by live/dead staining. The obtained results showed that this plant extract could be used in the development of cosmetic products with antibacterial and sun protection properties.
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  • 文章类型: Journal Article
    在这项研究中,合成了五种不同的Cu(II)配合物,用于环境臭名昭著的汞传感和初步生物筛选。吡啶-2,6-二羧酸(也称为吡啶二羧酸,缩写为H2DPA),3-苯基吡唑(3-ppz),4-碘-1H-吡唑(4-ipz),4-硝基吡唑(4-npz),4-溴吡唑(4-bpz),选择4-氯吡唑(4-cpz)作为潜在配体。合成的复合物标记为1-5,即[Cu(DPA)(3-ppz)],[Cu(DPA)(4-ipz)],[Cu(DPA)(4-npz)],[Cu(DPA)(4-bpz)],[Cu(DPA)(4-cpz)],基于光谱数据(FTIR,TGA,和紫外可见光谱)。这些配合物的特征在于C=O官能团不参与配位并且可以用于进一步的应用。分离的复合物用于检测水样中的Hg(II)离子。制备各种浓度的Hg(II)离子用于检测目的,使用紫外可见光谱法确定有关配合物1-5的吸收变化。发现配合物3和4对Hg(II)离子表现出有效的感应能力。评估复合物1-5对伤寒沙门氏菌和大肠杆菌的抗菌活性。配合物1和3对伤寒沙门氏菌(13.67和13.56mm,分别),而发现复合物1、2和4对大肠杆菌(11.6、12.66、11.31mm,分别)。2,2-二苯基-1-吡啶酰肼(DPPH)在517nm处的吸收最大值,添加复合物1-5后发生了相当大的变化。结果表明,配合物具有潜在的自由基清除能力。
    In this study five different complexes of Cu(II) were synthesized for the purpose of environmentally notorious mercury sensing and preliminary biological screening. Pyridine-2,6-dicarboxylic acid (also known as dipicolinic acid, and abbreviated as H2DPA), 3-phenyl pyrazole (3-ppz), 4-iodo-1H-pyrazole (4-ipz), 4-nitropyrazole (4-npz), 4-bromopyrazole (4-bpz), and 4-chloropyrazole (4-cpz) were chosen as potential ligands. The synthesized complexes labelled as 1-5, namely [Cu(DPA)(3-ppz)], [Cu(DPA)(4-ipz)], [Cu(DPA)(4-npz)], [Cu(DPA)(4-bpz)], [Cu(DPA)(4-cpz)], were proposed based on spectroscopic data (FTIR, TGA, and UV-visible spectroscopy). These complexes feature C=O functionalities that are not involved in coordination and may be used for further applications. The isolated complexes were utilized for detecting Hg(II) ions in water samples. Various concentrations of Hg(II) ions were prepared for detection purposes, and changes in absorption concerning complexes 1-5 were determined using UV-Visible spectroscopy. It was found that complexes 3 and 4 exhibit efficient sensing abilities towards Hg(II) ions. The antibacterial activities of complexes 1-5 were assessed against S. typhi and E. coli. The complexes 1 and 3 displayed good antibacterial activities against S. typhi (13.67, and 13.56 mm, respectively) while complexes 1, 2 and 4 were found to be efficient against E. coli (11.6, 12.66, 11.31 mm, respectively). The absorption maxima of 2,2-diphenyl-1-picryhydrazyl (DPPH) at 517 nm, considerably shifted upon addition of complexes 1-5. The results reveal that the complexes possess potential free radical scavenging abilities.
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  • 文章类型: Journal Article
    在糖尿病血糖水平升高的情况下,蛋白质的非酶糖基化加速。维生素和矿物质缺乏与糖尿病的发病和进展密切相关。各种水溶性和脂溶性维生素的抗糖基化能力,以及钼(Mo)等微量矿物质,锰(Mn),镁(Mg),铬,等。,已经使用牛血清白蛋白(BSA)作为体外模型进行了筛选。BSA与甲基乙二醛(MGO)在37°C下孵育48小时,与矿物质和维生素分开,以及对照和氨基胍(AG)作为比较矿物质和维生素功效的标准。Further,检查了它们对肾细胞(HEK-293)抗氧化潜力的影响。通过监测蛋白质糖基化标志物来测量抗糖基化潜力,结构和功能修改。一些矿物质,Mo,Mn,Mg,在最大生理浓度下,对蛋白质结合的羰基含量和β-淀粉样蛋白聚集的抑制作用相当。Mo和Mg保护了巯基和游离氨基酸,并保留了抗氧化潜力。维生素E,D,B1和B3显示显著的糖化抑制和改善的抗氧化潜力在HEK-293细胞通过评估脂质过氧化评估,SOD和乙二醛酶活性。这些结果强调了维生素和矿物质的糖化抑制潜力,表明这些微量营养素在糖尿病管理治疗前景中的应用前景。
    Nonenzymatic glycation of proteins is accelerated in the context of elevated blood sugar levels in diabetes. Vitamin and mineral deficiencies are strongly linked to the onset and progression of diabetes. The antiglycation ability of various water- and fat-soluble vitamins, along with trace minerals like molybdenum (Mo), manganese (Mn), magnesium (Mg), chromium, etc., have been screened using Bovine Serum Albumin (BSA) as in vitro model. BSA was incubated with methylglyoxal (MGO) at 37 °C for 48 h, along with minerals and vitamins separately, along with controls and aminoguanidine (AG) as a standard to compare the efficacy of the minerals and vitamins. Further, their effects on renal cells\' (HEK-293) antioxidant potential were examined. Antiglycation potential is measured by monitoring protein glycation markers, structural and functional modifications. Some minerals, Mo, Mn, and Mg, demonstrated comparable inhibition of protein-bound carbonyl content and ß-amyloid aggregation at maximal physiological concentrations. Mo and Mg protected the thiol group and free amino acids and preserved the antioxidant potential. Vitamin E, D, B1 and B3 revealed significant glycation inhibition and improved antioxidant potential in HEK-293 cells as assessed by estimating lipid peroxidation, SOD and glyoxalase activity. These results emphasize the glycation inhibitory potential of vitamins and minerals, indicating the use of these micronutrients in the prospect of the therapeutic outlook for diabetes management.
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  • 文章类型: Journal Article
    这项工作旨在评估紫草提取物的抗氧化和抗菌性能。对不同的植物部位进行了生化分析,利用酶和非酶测定。参数,如总可溶性蛋白质,叶绿素,和类胡萝卜素含量也进行了评估,以阐明生物活性化合物的作用。对细菌和真菌菌株大肠杆菌进行了提取物的抗菌筛选,金黄色葡萄球菌,和白色念珠菌,分别。结果表明,叶绿素a,叶绿素b,总叶绿素,类胡萝卜素含量,花青素含量,过氧化氢酶,过氧化物酶,超氧化物歧化酶在O.Corymbosa叶片中含量最高。此外,抗坏血酸过氧化物酶总含量,总酚含量,发现根中总黄酮含量高于其他部位。高效液相色谱分析确定绿原酸为主要成分,其次是没食子酸,咖啡酸,槲皮素,和水杨酸。关于抗菌潜力,每种提取物都表现出显著的活性,甲醇和乙酸乙酯提取物证明了对金黄色葡萄球菌和大肠杆菌的最大抑制区,分别。这些发现突出了O.corymbosa不同部位的大量抗氧化和抗菌潜力,表明它们作为各种营养产品成分的有希望的应用。
    This work aimed to assess the antioxidant and antimicrobial properties of Oxalis corymbosa extracts. Biochemical analyses were conducted on various plant parts, utilizing enzymatic and non-enzymatic assays. Parameters such as total soluble protein, chlorophyll, and carotenoid contents were also evaluated to elucidate the role of bioactive chemical compounds. The antimicrobial screening of extracts was performed against the bacterial and fungal strains Escherichia coli, Staphylococcus aureus, and Candida albicans, respectively. Results indicated that chlorophyll a, chlorophyll b, total chlorophyll, carotenoid content, anthocyanin content, catalase, peroxidase, and superoxide dismutase were most abundant in the O. corymbosa leaves. Moreover, total ascorbate peroxidase content, total phenolic content, and total flavonoid content were found to be higher in the roots compared to other parts. High-performance liquid chromatography analysis identified chlorogenic acid as the major component, followed by gallic acid, caffeic acid, quercetin, and salicylic acid. Regarding antibacterial potential, each extract exhibited significant activity, with methanolic and ethyl acetate extracts demonstrating the maximum inhibition zone against S. aureus and E. coli, respectively. These findings highlight the substantial antioxidant and antibacterial potential of different parts of O. corymbosa, suggesting their promising applications as ingredients in various nutraceutical products.
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  • 文章类型: Journal Article
    通过对七叶草甲醇树皮提取物的化学研究,分离出了一种新的黄烷酮,5,7,4\'-三羟基-3\',5'-双(3-甲基丁二烯基)黄烷酮(三重命名为苯丙酮)(1),连同七种已知的化合物,苦参素-V-4'-O-甲基醚(2),苦参素V(3),Calopocarpin(4),金雀异黄素(5)豆甾醇(6)和β-谷甾醇(7)和β-谷甾醇-3-O-β-D-吡喃葡萄糖苷(8)的混合物。通过广泛的光谱和光谱分析(1D和2DNMR,ESI-MS),并与以前报告的数据进行比较。1的绝对构型是基于其实验CD与类似化合物的CD的比较来推导的。所有化合物都经过了抗菌测试,抗真菌和抗氧化活性。化合物4对肠炎沙门氏菌表现出弱的抗菌活性,MIC值为62.5μg/mL。发现所有分离物在DPPH中作为抗氧化剂是无活性的,ABTS和FRAP测定。
    The chemical investigation of the methanol trunk bark extract of Erythrina senegalensis led to the isolation of a new flavanone, 5,7,4\'-trihydroxy-3\',5\'-bis(3-methylbutadienyl)flavanone (trivially named senegalensisnone) (1), together with seven known compounds, abyssinone-V-4\'-O-methyl ether (2), abyssinone V (3), Calopocarpin (4), genistein (5) mixture of stigmasterol (6) and β-sitosterol (7) and β-sitosterol-3-O-β-D-glucopyranoside (8). The structures of the isolates were elucidated by extensive spectroscopic and spectrometric analyses (1D and 2D NMR, ESI-MS) and by comparison with previously reported data. The absolute configuration of 1 was deduced based on comparison of its experimental CD with that of similar compound. All the compounds were tested for their antibacterial, antifungal and antioxidant activities. Compound 4 displayed weak antibacterial activity against Salmonella enteritidis with MIC value of 62.5 μg/mL. All the isolates were found to be inactive as antioxidant agents in the DPPH, ABTS and FRAP assays.
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  • 文章类型: Journal Article
    这项研究旨在比较营养成分,抗氧化潜力,和水果的多酚生物可及性,叶子,和黑苦莓果渣。植物化学表征,抗氧化活性,以及体外胃肠消化对水果中单个酚类化合物的影响,叶子,和黑苦莓果渣进行了评估。结果表明,叶片中的多酚含量较高(61.06mgGAE/gdw),黄酮类化合物(8.47mgQE/g),和生育酚(1172.20毫克/千克)比水果(27.99毫克GAE/克dw多酚,5.23mgQE/g黄酮,38.48mg/kg生育酚)和果渣(22.94mgGAE/gdw多酚,1.89mgQE/g类黄酮和157.19mg/kg生育酚),具有优越的体外抗氧化活性。绿原酸是黑莓未消化样品中的主要酚类化合物(水果中2.713mg/g,17.954毫克/克的叶子,和1.415mg/g的果渣),但吸收不良(肠道阶段的生物可及性指数为28.84%的水果,叶子为8.81%,和31.90%的果渣)。羟基苯甲酸在模拟消化过程中在叶片和果实中高度稳定,并具有较高的生物可及性。总之,来自黑苦莓加工的残留物也是生物活性化合物的宝贵来源,但是果渣比叶子具有更高的多酚生物可及性,可能是食品工业的有希望的补充。
    The study aims to compare the nutrient composition, antioxidant potential, and polyphenol bioaccessibility of the fruit, leaves, and pomace of black chokeberry. Phytochemical characterization, antioxidant activity, and the effect of in vitro gastrointestinal digestion on the individual phenolic compounds of fruit, leaves, and pomace of black chokeberry were assessed. Results showed that leaves had a higher content of polyphenols (61.06 mg GAE/g dw), flavonoids (8.47 mg QE/g), and tocopherols (1172.20 mg/kg) than fruit (27.99 mg GAE/g dw polyphenols, 5.23 mg QE/g flavonoids, 38.48 mg/kg tocopherols) and pomace (22.94 mg GAE/g dw polyphenols, 1.89 mg QE/g flavonoids and 157.19 mg/kg tocopherols), with superior in vitro antioxidant activity. Chlorogenic acids were the dominant phenolic compounds in black chokeberry undigested samples (2.713 mg/g in fruit, 17.954 mg/g in leaves, and 1.415 mg/g in pomace) but are poorly absorbed (bioaccessibility index in intestinal phase of 28.84% for fruit, 8.81% for leaves, and 31.90% for pomace). Hydroxybenzoic acids were highly stable in leaves and fruit during simulated digestion and had high bioaccessibility. In conclusion, residues from black chokeberry processing are also valuable sources of bioactive compounds, but the pomace had higher polyphenol bioaccessibility than leaves and might be a promising supplement for the food industry.
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  • 文章类型: Journal Article
    芸苔属油菜(syn。芸苔属油菜)通常被称为芥菜,由于其与营养素和植物化学物质的存在相关的促进健康的特性而在世界范围内生长。除了营养成分,B.campestris还含有抗营养素(植酸,草酸盐,单宁,生物碱,皂苷)可能对消费者造成严重的健康不利影响,包括皮疹,恶心,头痛,腹胀和营养不足。在本研究中,加热(热烫)和发酵(植物乳杆菌)处理被应用于减少在三个不同生长阶段收获的B.campestris叶的抗营养素的负荷:第一阶段(第四周),第二阶段(第六周)和第三阶段(第八周)。结果表明,使用Lp进行发酵处理。车前草会增加灰分(5.4%至6%),蛋白质(9至10.4%)和纤维(9.6至10.7%)含量,而水分(0.91至0.82%),油菜样品中脂肪(9.9至9.1%)和碳水化合物(64.5至64.2%)含量降低,这三个阶段的趋势相似。漂白和发酵导致植酸盐减少(46,42%),皂苷(34,49%),单宁(1,10%),草酸盐(15,7%)和生物碱(10,6%),分别与卷心菜叶的原始样品进行比较。相比之下,发酵对植物化学物质含量(总酚和总黄酮)和抗氧化潜力(DPPH和FRAP)没有显着影响。与单独的烫漂或发酵相比,烫漂随后发酵的作用导致上述毒物负荷的更多下降。热烫中的结构修饰和发酵中的生化转化导致营养稳定性和抗氧化潜力增强。一起来看,这些发现表明热烫后发酵处理是一种可靠的,具有成本效益和更安全的方法来减少抗营养负荷,而不影响附近的成分,植物化学属性和抗氧化活性。
    Brassica campestris (syn. Brassica rapa) is often known as mustard and is grown worldwide owing to its health-promoting characteristics associated with the presence of nutrients and phytochemicals. Along with the nutritional components, B. campestris also contains anti-nutrients (phytates, oxalates, tannins, alkaloids, saponins) that can cause adverse severe health effects to consumers, including rashes, nausea, headaches, bloating and nutritional deficiencies. In the present study, heating (blanching) and fermentation (Lactiplantibacillus plantarum) treatments were applied to reduce the load of the anti-nutrients of B. campestris leaves harvested at three different growth stages: the first stage (fourth week), the second stage (sixth week) and the third stage (eighth week). Results revealed that fermentation treatment using Lp. plantarum increases the ash (5.4 to 6%), protein (9 to 10.4%) and fiber (9.6 to 10.7%) contents, whereas moisture (0.91 to 0.82%), fat (9.9 to 9.1%) and carbohydrate (64.5 to 64.2%) contents decreased among B. campestris samples, and the trend was similar for all three stages. Blanching and fermentation lead to the reduction in phytates (46, 42%), saponins (34, 49%), tannins (1, 10%), oxalates (15, 7%) and alkaloids (10, 6%), separately as compared to raw samples of B. campestris leaves. In contrast, fermentation had no considerable effect on phytochemical contents (total phenolic and total flavonoids) and antioxidant potential (DPPH and FRAP). The action of blanching followed by fermentation caused more decline in the aforementioned toxicants load as compared to blanching or fermentation alone. Structural modifications in blanching and the biochemical conversions in fermentation lead to enhanced stability of nutrients and antioxidant potential. Taken together, these findings suggest blanching followed by fermentation treatments as a reliable, cost-effective and safer approach to curtail the anti-nutrient load without affecting the proximate composition, phytochemical attributes and antioxidant activity.
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