oxidative stability

氧化稳定性
  • 文章类型: Journal Article
    这项研究的目的是研究丁香芽油作为脂溶性抗氧化剂在加速氧化条件下,通过用蜂蜡以5、7.5和10%的浓度结构化菜籽油来延缓有机凝胶中脂质氧化的利用。油结合能力和粘弹性性能随蜂蜡含量的增加而增加,但几乎没有受到丁香芽油的影响。发现载有丁香芽油的有机凝胶在高蜂蜡含量系统中更有效地阻止脂质氧化,在10%蜂蜡样品中尤为明显。丁香芽油的添加导致过氧化氢和丙二醛的含量较低,并且在储存期间防止质地和颜色劣化。此外,已发现脂质氧化指数与质地和颜色参数之间的Pearson相关性表现出有限的关联,除了a*和b*值之外,显示出很强的相关性。
    The aim of this study was to investigate the utilization of clove bud oil as fat-soluble antioxidants for retarding lipid oxidation in organogels by structuring canola oil with beeswax at 5, 7.5, and 10% concentration under accelerated oxidation condition. Oil binding capacity and viscoelastic properties were increased with beeswax content, but were not nearly affected by the addition of clove bud oil. Organogel loaded with clove bud oil were found to be more effective in retarding lipid oxidation in high beeswax content systems, particularly evident in 10% beeswax samples. The addition of clove bud oil resulted in low levels of hyeoperxide and MDA, and protected against texture and color deterioration during the storage period. Additionally, the Pearson correlation between lipid oxidation indices and parameters of texture and color has been found to exhibit a limited association, with the exception of the a* and b* values, which show a strong correlation.
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  • 文章类型: Journal Article
    本研究旨在研究饲喂乳香果肉对家兔动物性能和肉品质的影响。将30只兔子分为两组(体重平衡,804.4±2.35g),并单独饲喂基础饮食(对照)或基础饮食60天,其中部分谷物被10%的干佛手果肉(DBP)代替。DBP对生长性能没有影响,car体产量,或肉的粗蛋白和乙醚提取物成分。在将干佛手果肉整合到饮食中后,胸腰最长肌中α-亚麻酸(C18:3n-3)和二十碳五烯酸(C20:5n-3)的浓度增加(分别为p<0.01和p=0.021),导致与对照处理相比更高水平的ω-3脂肪酸(p<0.01)。包含干佛手果肉改善了肉中的氧化稳定性(p<0.001),其中DBP组冷藏4天和7天后的TBARS值低于对照组(p<0.001)。最后,给兔子饲喂佛手果肉可以改善肉质,而不会对生长性能产生负面影响。
    This study aimed to investigate the effects of feeding dried bergamot pulp to rabbits on animal performance and meat quality. Thirty rabbits were assigned to two groups (balanced for body weight, 804.4 ± 2.35 g) and fed individually for 60 days a basal diet (control) or the basal diet in which part of the cereals was replaced with 10% of dried bergamot pulp (DBP). There were no effects of DBP on growth performance, carcass yield, or the crude protein and ether extract composition of meat. The concentrations of α-linolenic acid (C18:3 n-3) and eicosapentaenoic acid (C20:5 n-3) increased in the longissimus thoracis et lumborum muscle (p < 0.01 and p = 0.021, respectively) after integrating dried bergamot pulp into the diet, leading to higher levels of total of ω-3 fatty acids (p < 0.01) compared to the control treatment. The inclusion of dried bergamot pulp improved the oxidative stability in meat (p < 0.001), where TBARS values were lower after 4 and 7 days of refrigerated storage (p < 0.001) in the DBP group than in the control group. Finally, feeding dried bergamot pulp to rabbits improves meat quality without negatively influencing growth performance.
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  • 文章类型: Journal Article
    考虑到Achetadomecticus面粉作为许多食品中的成分越来越重要和利用,对其储存的研究至关重要。这项研究的目的是确定在不同储存温度(-18°C,+4°C,和+20°C两种变体,有和没有光)。使用傅立叶变换红外光谱(FTIR)研究了昆虫粉。测定脂肪酸含量,并计算膳食指标。酸值,过氧化值,并测定茴香胺值,并进行差示扫描量热法。从Acheta驯化粉的光谱分析获得的结果与生化数据一致。在12个月的面粉储存期间,储存温度显着影响确定的脂肪酸组的百分比组成以及所有呈现的比率和饮食指数的值。在冷藏温度(-18°C和+4°C)下储存期间,脂肪酸含量和膳食指数没有变化,表明冷藏温度在12个月的储存期间为面粉提供氧化稳定性。在20°C下储存的样品具有较高的酸值(AV),过氧化值(PV),和茴香胺值(p-AV)相比于在较低温度(4°C和-18°C)下储存的样品。同时,SFA和MUFA的增加,以及PUFA和UFA的减少,在室温下储存的样品中记录。当储存期超过12个月时,在较低的温度下储存板球面粉对于限制脂肪氧化的发生至关重要。升高的温度和暴露于光对加速氧化机制有显著的影响,降低热弹性,并诱导更明显的脂肪质量变化。
    Considering Acheta domecticus flour\'s growing importance and utilization as an ingredient in many food products, research on its storage is essential. The objective of this study was to determine the chemical and nutritional fat profile of house cricket (Acheta domesticus) flour during storage for 12 months under different storage temperatures (-18 °C, +4 °C, and +20 °C in two variants, with and without access to light). Insect flour was studied using Fourier-transform infrared spectroscopy (FTIR). The fatty acids content was determined, and dietary indicators were calculated. The acid value, peroxide value, and anisidine value were also determined, and differential scanning calorimetry was performed. The results obtained from spectroscopic analysis of Acheta domesticus flour were consistent with the biochemical data. During the 12-month period of flour storage, the storage temperature significantly influenced the percentage composition of identified groups of fatty acids and the values of all presented ratios and dietary indices. During storage at refrigerated temperatures (-18 °C and +4 °C), no changes were observed in the fatty acid content and dietary indices, indicating that refrigerated temperatures provide oxidative stability to flour during 12 months of storage. Samples stored at 20 °C had higher acid values (AV), peroxide values (PV), and anisidine values (p-AV) compared to samples stored at lower temperatures (4 °C and -18 °C). Simultaneously, an increase in SFA and MUFA, as well as a decrease in PUFA and UFA, was noted in samples stored at room temperature. Storing cricket flour at lower temperatures when the storage period will be more than 12 months is essential to restrict the occurrence of fat oxidation. Elevated temperatures and exposure to light have a notable effect in hastening oxidation mechanisms, reducing thermal resilience, and inducing more pronounced alterations in the quality of fats.
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  • 文章类型: Journal Article
    这项研究调查了无麸质松饼中乳蓟种子蛋白(MTP)分离株的潜在利用,以提高蛋白质的数量和技术属性。MTP用于部分替代混合物,包括等量的米粉和玉米淀粉(RCS),3%,6%,9%,和12%。该研究包括对松饼面糊和物理化学的流变学评估,纹理,和松饼的感官分析。松饼面糊的稠度系数(K)随着MTP的掺入而增加,所有面糊表现出剪切稀化行为(n<1)。面团样品表现出归因于G\'>G”的固体样特征,表明它们的粘弹性。储能模量(G')和损耗模量(G”)随着MTP水平的提高而上升,表明面团粘弹性整体增强。含有小麦粉的松饼显示出最低的硬度值,其次是以12%和9%的比例添加MTP的松饼。此外,添加MTP的松饼比不含MTP的对照样品表现出更大的弹性值(C2)。然而,添加MTP的松饼的氧化稳定性低于小麦对照松饼(C1)和无麸质对照松饼。松饼中的蛋白质含量随着MTP的添加而增加,以6%的MTP替代达到与小麦粉松饼的同等水平。感官分析表明,用高达6%的MTP代替RCS并没有显著改变整体质量(p>0.05)。而较高的MTP水平(9%和12%)导致感官属性下降。掺入高达6%的MTP可产生富含蛋白质的松饼,其感官特性与小麦粉松饼(C1)相当。此外,较高的MTP添加(9%和12%)赋予比C2松饼更有利的质地性能。然而,发现对照松饼的氧化稳定性高于添加MTP的松饼。这项研究表明,MTP可能是一种潜在的成分,可以增加无麸质松饼的蛋白质含量和比容,并改善弹性和硬度等质构属性。
    This study investigated the potential utilization of milk thistle seed protein (MTP) isolates in gluten-free muffins to enhance the protein quantity and technological attributes. MTP was employed to partially substitute a blend including equal amounts of rice flour and corn starch (RCS) at 3%, 6%, 9%, and 12%. The study encompassed a rheological assessment of muffin batters and physicochemical, textural, and sensory analyses of the muffins. The consistency coefficient (K) of muffin batters exhibited an increase with the incorporation of MTP, with all batters demonstrating shear-thinning behavior (n < 1). The dough samples exhibited solid-like characteristics attributed to G\' > G″, indicative of their viscoelastic nature. The storage modulus (G\') and loss modulus (G″) escalated with higher levels of MTP, suggesting an overall enhancement in dough viscoelasticity. The muffin containing wheat flour displayed the lowest hardness value, followed by MTP-added muffins at ratios of 12% and 9%. Additionally, MTP-added muffins exhibited greater springiness values than control samples without MTP (C2). However, the oxidative stability of MTP-added muffins was lower than the wheat control muffin (C1) and gluten-free control muffin. The protein content in muffins increased with MTP addition, reaching parity with wheat flour muffins at 6% MTP replacement. Sensory analysis revealed that substituting RCS with up to 6% MTP did not significantly alter the overall quality (p > 0.05), whereas higher MTP levels (9% and 12%) led to a decline in sensory attributes. Incorporating MTP at up to 6% yielded protein-enriched muffins with sensory characteristics comparable to the wheat flour muffin (C1). Furthermore, higher MTP additions (9% and 12%) conferred more favorable textural properties than the C2 muffin. However, the oxidative stability of the control muffins was found to be higher than that of MTP-added muffins. This study suggested that MTP could be a potential ingredient to increase the protein amount and specific volume of gluten-free muffins and to improve textural attributes such as springiness and hardness.
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  • 文章类型: Journal Article
    掺入2.5%的黑加仑果渣提取物(BPE),研究了5.0%和10.0%加入基于高油酸向日葵和亚麻籽油的乳液凝胶中,以获得用作维也纳香肠中猪肉回脂替代品的功能性成分。与传统产品相比,用对照乳液凝胶代替猪肉回脂减少了蒸煮损失,但通过降低L*和a*值而对颜色产生负面影响。n-6/n-3比率从10.99下降到1.54左右(下降7倍)是通过重新配制实现的,而PUFA/SFA比率从0.49增加到1.09。BPE的掺入对脂肪酸谱没有重大影响,并通过增加发红来改善颜色,但通过增加硬度对织构产生负面影响,与不含提取物的重新配制的香肠相比,胶粘性和共享力。BPE降低了乳液凝胶的pH值和热稳定性,香肠中烹饪损失增加,水分保留率降低。BPE增加了富含多不饱和脂肪酸的维也纳香肠的氧化稳定性;然而,BPE掺入到乳液凝胶中超过5%影响外观的感官评分,重新配制香肠的质地和一般可接受性。
    The incorporation of a blackcurrant pomace extract (BPE) at 2.5%, 5.0% and 10.0% into an emulsion gel based on high oleic sunflower and linseed oils was examined in order to obtain a functional ingredient to be used as a pork backfat replacer in Vienna sausages. The replacement of the pork backfat with the control emulsion gel reduced the cooking loss but negatively affected the color by decreasing L* and a* values as compared with the traditional product. A decrease in the n-6/n-3 ratio from 10.99 to around 1.54 (by 7 times) was achieved through reformulation, while the PUFA/SFA ratio increased from 0.49 to 1.09. The incorporation of BPE did not have a major impact on the fatty acid profile and improved color by increasing redness, but negatively affected the texture by increasing hardness, gumminess and share force as compared with the sausages reformulated without extract. BPE reduced the pH and the thermal stability of the emulsion gels, increased cooking loss and decreased moisture retention in sausages. BPE increased the oxidative stability of Vienna sausages enriched in polyunsaturated fatty acids; however, the incorporation of BPE into the emulsion gels above 5% affected the sensory scores for appearance, texture and general acceptability of the reformulated sausages.
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  • 文章类型: Journal Article
    四种混合油,包括棕榈油+玉米油(PC),棕榈+葡萄籽油(PG),玉米+葡萄籽油(CG),使用棕榈+玉米+葡萄籽油(PCG)作为油炸介质。8-氧代和9-氧代含量,脂肪酸组成,氧化稳定性指数,分析了样品(n=42)的碘值。随着油炸周期的增加,8-oxo和9-oxo的含量也显着增加(p<0.05),在100个油炸周期中,其含量最高为965.56±0.706μg/g。在CG中20-40个油炸周期后,棕榈的数量,硬脂酸,油酸和亚油酸增加到15.5%(p<0.05)。棕榈油的氧化稳定性在16.76-18.33h时最高(p<0.05)。葡萄籽油的碘值最高,为144.96±2.569-153.64±2.233g碘/100g油(p<0.05)。在检查的油中,PC是棕榈油的最合适替代品。
    Four blended oils including palm + corn oil (PC), palm + grapeseed oil (PG), corn + grapeseed oil (CG), and palm + corn + grapeseed oil (PCG) were used as frying media. The 8-oxo and 9-oxo content, fatty acid composition, oxidative stability index, and iodine value of samples (n = 42) were analyzed. As the frying cycles increased, the content of 8-oxo and 9-oxo also increased significantly (p < 0.05) and showed the highest content of 965.56 ± 0.706 μg/g in 100 frying cycles of PCG. After 20-40 frying cycles in CG, the amount of palmitic, stearic, oleic and linoleic acid increased up to 15.5% (p < 0.05). The oxidative stability of palm oil was the highest at 16.76-18.33 h (p < 0.05). The iodine value of grapeseed oil was the highest at 144.96 ± 2.569-153.64 ± 2.233 g iodine/100 g oil (p < 0.05). Among the examined oils, PC was the most suitable alternative to palm oil.
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  • 文章类型: Journal Article
    这项研究探讨了姜黄副产品的潜力,称为姜黄素去除姜黄油树脂(CRTO),延长花生酱的保质期。CRTO,富含姜黄素,添加到花生酱配方中以评估其防腐效果,风味影响,和营养益处。结果表明,CRTO油和姜黄素通过延缓酸败有效延长了花生酱的保质期。该研究还比较了使用氧清除剂膜(OSF)包装的结果。随着时间的推移,水活度和油分离增加,但CRTO石油和OSF帮助减轻了这些影响。感官评估有利于CRTO油和姜黄素,虽然微生物分析证实了对照和OSF样品在27°C和65%RH下六个月的安全性,并在37°C和95%RH下持续四个月。这项研究提出了一种自然和可持续的方法来延长花生酱的保质期,同时丰富姜黄素,对食品工业有重大影响。
    This study explores the potential of Curcuma longa byproducts, called Curcuminoid removed turmeric oleoresin (CRTO), to extend the shelf life of peanut butter. CRTO, rich in curcuminoids, was added to peanut butter formulations to assess its preservative effects, flavour impact, and nutritional benefits. Results demonstrated that CRTO oil and curcuminoids effectively prolonged peanut butter shelf life by delaying rancidity. The study also compared results using oxygen scavenger film (OSF) packaging. Over time, water activity and oil separation increased, but CRTO oil and OSF helped to mitigate these effects. Sensory evaluations favored CRTO oil and curcuminoids, while microbial analysis confirmed safety of both the control and OSF samples for six months at 27 °C and 65% RH, and for four months at 37 °C and 95% RH. This study proposes a natural and sustainable method for extending peanut butter shelf life while enriching it with curcuminoids, with significant implications for the food industry.
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  • 文章类型: Journal Article
    本研究旨在评估小球藻补充对肉鸡日粮的影响,单独或与维生素E联合使用,关于肉质参数,营养价值,和氧化稳定性在储存时间。在180COBB500肉鸡(14日龄)上进行了实验,被分配到六种治疗中,遵循2×3阶乘排列。玉米-豆粕日粮补充了三个水平的普通梭菌(C1组0%,E1组1%,E2组2%),两种水平的维生素E(C1中0%,C2中250ppm),和它们的组合(1%C.vulgaris+250ppm维生素(E3),2%的普通念珠菌+250ppm维生素(E4))。普通梭菌的饮食掺入,包括那些补充了维生素E的,导致肉类蛋白质含量显着增加。在2%普通梭菌+维生素E组中,DPA和DHA水平分别增加2.01倍和1.60倍。PUFA/SFA比率在所有饮食处理中均增加(p<0.0001)。HPI和h/H记录的最高值是补充2%普通梭菌的结果,与降低胆固醇水平的积极作用有关。与对照组相比,补充2%普通梭菌和维生素E显示大腿肉中维生素E浓度增加了1.45倍,是这个实验中大腿肉中记录的最高水平。实验组大腿肉中的肌红蛋白浓度较低,而与对照组相比,同组的脱氧肌红蛋白增加。在肉鸡日粮中加入普通梭菌(1%和2%)与维生素E(250mg/kg)的组合,在冷藏7天后表现出对脂质氧化的最佳预防。由二次氧化产物评估的最高效率因子定义。
    This study aimed to assess the impact of Chlorella vulgaris supplementation in broilers\' diet, alone or in combination with vitamin E, on meat quality parameters, nutritional value, and oxidative stability during storage time. An experiment was conducted on 180 COBB 500 broiler chickens (14 days old), assigned into six treatments, following a 2 × 3 factorial arrangement. A corn-soybean meal diet was supplemented with three levels of C. vulgaris (0% in group C1, 1% in E1, 2% in E2), two levels of vitamin E (0% in C1, 250 ppm in C2), and a combination of them (1% C. vulgaris + 250 ppm vitamin (E3), 2% C. vulgaris + 250 ppm vitamin (E4)). Dietary incorporation of C. vulgaris, including those supplemented with vitamin E, resulted in a significant increase in meat protein content. DPA and DHA levels increased by 2.01-fold and 1.60-fold in the 2% C. vulgaris + vitamin E group. The PUFA/SFA ratio was increased across all dietary treatments (p < 0.0001). HPI and h/H registered the highest values as a result of 2% C. vulgaris supplementation, being linked with a positive effect in lowering cholesterol levels. Supplementation with 2% C. vulgaris and vitamin E exhibited a 1.45-fold increase in vitamin E concentration in thigh meat compared to the control group, being the highest level registered in thigh meat in this experiment. Metmyoglobin concentrations registered lower values in the thigh meat of the experimental groups, while deoxymyoglobin increased in the same groups when compared to the control group. The inclusion of C. vulgaris (1% and 2%) in combination with vitamin E (250 mg/kg) in broiler diets exhibited the best prevention of lipid oxidation after 7 days of refrigerated storage, defined by the highest efficiency factors assessed in terms of secondary oxidation products.
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  • 文章类型: Journal Article
    在本文中,以虎子油(TNO)为芯材,采用喷雾干燥法,以大豆分离蛋白(SPI)和麦芽糊精(MD)为壁材,并对其理化性质和稳定性进行了表征和分析。在最佳条件下,TNOM的包封率(EE)可达91.23%。值得注意的是,在60°C下储存60天后,TNO的过氧化值(PV)几乎是包封TNO的21.8倍。此外,TNOM在200°C以下具有良好的热稳定性,并且足以满足一般的食品加工需求。通过拟合阿伦尼乌斯氧化动力学模型,据预测,产品在25°C下储存的保质期为352.48d。因此,有望在未来应用于高油酸食品的开发。这项研究为TNO在食品工业中的利用和应用范围提供了理论框架。
    In this paper, tiger nut oil-loaded microcapsules (TNOMs) were prepared by complexation soybean protein isolate (SPI) and maltodextrin (MD) as wall materials using the spray drying method with tiger nut oil (TNO) as the core material, and its physicochemical properties and stabilities were characterized and analyzed. Under the optimum conditions, the encapsulation efficiency (EE) of TNOMs could reach up to 91.23%. Of note, after 60 days of storage at 60 °C, the peroxide value (PV) of TNO was almost 21.8 times as much as that of TNO encapsulated. Furthermore, TNOMs had good thermal stability below 200 °C and are sufficient for the general food processing needs. By fitting Arrhenius oxidation kinetics model, it was predicted that the shelf life of the product stored at 25 °C was 352.48 d. Therefore, it is promised to be applied to the development of high oleic acid food in the future. This study offered a theoretical framework for utilization and broadening the range of applications of TNO in the food industry.
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  • 文章类型: Journal Article
    本研究调查了甘氨酸(Gly)和戊糖片(Pp)的应用效果,单独或组合,关于物理化学性质,氧化稳定性,哈尔滨干香肠的口感品质。结果表明,经过9天的发酵,Gly+Pp组水分含量(19.04%)显著降低(P<0.05),水活度(0.686),和pH值(4.78),值得注意的是(P<0.05)更高的乳酸菌计数(8.11logCFU/g香肠)和红度值(17.2),与其他三组相比(P<0.05)。此外,Gly+Pp组的干香肠表现出最低的过氧化值(0.34meq/kg香肠),硫代巴比妥酸反应性物质(0.46MAD/kg香肠),发酵过程中的蛋白质羰基含量(1.26nmol/kg蛋白质),紧随其后的是Gly集团,PP组,和对照组。电子舌(e-舌)和感官评价显示,与戊糖P.pososacusR1和Gly的组合处理导致优异的味道特征。此外,偏最小二乘回归(PLSR)分析表明,使用电子舌表征的味道品质与感官评价结果一致,和总游离氨基酸(FAA)和有机酸有助于干香肠的味道特性。总之,Gly和PentosaceusR1的联合应用增强了理化性质,氧化稳定性,哈尔滨干香肠的味道。
    This study investigated the effects of the application of glycine (Gly) and Pediococcus pentosaceus R1(Pp), alone or in combination, on the physicochemical properties, oxidative stability, and taste quality of Harbin dry sausages. The results demonstrated that after nine days of fermentation, the Gly + Pp group exhibited significantly (P < 0.05) lower moisture content (19.04%), water activity (0.686), and pH (4.78) values, alongside notably (P < 0.05) higher lactic acid bacteria count (8.11 log CFU/g sausage) and redness value (17.2), compared to the other three groups (P < 0.05). In addition, the dry sausages in the Gly + Pp group exhibited the lowest peroxide value (0.34 meq/kg sausage), thiobarbituric acid reactive substances (0.46 MAD/kg sausage), and protein carbonyl content (1.26 nmol/kg protein) during fermentation, followed by the Gly group, Pp group, and control group. Electronic tongue (e-tongue) and sensory evaluations revealed that the combined treatment with P. pentosaceus R1 and Gly resulted in superior taste characteristics. Besides, partial least squares regression (PLSR) analysis illustrated that the taste qualities characterized using the e-tongue were accordant with the sensory evaluation consequences, and total free amino acids (FAAs) and organic acids contributed to the dry sausages\' taste properties. In conclusion, the combined application of Gly and P. pentosaceus R1 enhanced the physicochemical properties, oxidative stability, and taste profile of Harbin dry sausages.
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