迷迭香复配抗氧化剂对食品的影响及应用研究进展

迷迭香作为天然抗氧化剂其主要成分为迷迭香酸、迷迭香酚、鼠尾草酸、鼠尾草酚、迷迭香双醛和迷迭香二酚等,因具有高效、稳定、耐高温的特点,在各个领域中都有着广泛的应用。与其他复合抗氧化剂相比,迷迭香复合抗氧化剂在食品中的应用研究相对较少,文章通过对迷迭香复配抗氧化剂在肉制品、食用油、水产品及水果中抗氧化性能的影响及应用研究进展进行了综述,探索迷迭香复配抗氧化剂在食品中更广泛的研究与应用空间。     

迷迭香的研究及其应用——抗氧化剂

迷迭香植物于1981年由中国科学院植物研究所北京植物园引入我国。经过多项载培试验,有效成分 分析(鼠尾草酚、迷迭香酚、迷迭香双醛、乌孛酸和黄酮等),新工艺,抗氧化效能及应用试验等,取得引种驯化的 成功,得到精油和天然抗氧化剂两种产品。并在我国推广生产。     

迷迭香天然抗氧化剂的研究及其应用

以迷迭香为原料提取的天然抗氧化成份，具有许多优良的功能特性。该文简述了迷迭香的有效成分、特点，及其提取工艺，详述了其功能成分在食品、医药、保健品、化妆品领域的应用和前景。     

迷迭香天然高效抗氧化剂的研究及其应用

迷送香（RosmannusoffianalisL．）是一种历史悠久的香料植物，又是近十多年来举世公认的具有高效天然抗氧化效能的植物。J．R．Chipault、张驷祥、李延华、王文中（1952～1985）等人研究了32种香料植物的抗氧化有效成分及其抗氧化效能，认为迷迭香具有高效无毒抗氧化的作用。王文中、王夺元、孙法春、王颖、常静（1986～1997）等人对迷送香深人研究了不同环境条件、不同的发育阶段的抗氧化效能变化，抗氧化有效成分分析、分离、提取工艺和应用等多项试验，证明由于含有多种抗氧化有效成分以及多种抗氧化机理，导致迷迭香具有高效和广泛的…     

天然抗氧化剂迷迭香的研究进展及其应用前景

迷迭香具有显著的抗氧化、抗肿瘤、抗艾滋病毒及其它多种抗微生物活性的作用。本文综述了迷迭香的化学成分、功能及其作用机理,并对其在(运动)保健饮料、保健品、日化、医药卫生等方面的开发和利用进行了展望。     

迷迭香天然抗氧化剂研究及其应用

以迷迭香为原料提取天然抗氧化成分,具有许多优良功能特性。该文简述该抗氧化剂有效成分、特点、及其提取工艺,详述其功能成分在食品、医药、保健品、化妆品等领域应用和前景。     

迷迭香天然抗氧化剂的研究及其应用

以迷迭香为原料提取的天然抗氧化成份，具有许多优良的功能特性。为此，本文简述了该抗氧化剂的有效成分、特点、及其提取工艺．详述了其功能成分在食品、医药、保健品、化妆品领域的应用和前景。     

迷迭香天然抗氧化剂的应用研究

以核桃油为实验基油,研究了迷迭香天然抗氧化剂的应用。通过抗氧化实验、储藏实验和烹调实验,比较了迷迭香抗氧化剂和TBHQ的抗氧化效果。结果表明,迷迭香抗氧化剂具有较佳的抗氧化效果,在核桃油中随着迷迭香抗氧化剂添加量的增大抗氧化效果依次增强,0.02%迷迭香抗氧化剂与0.02% TBHQ有相似的抗氧化能力,可对核桃油酸败和反式脂肪酸形成起到延缓作用。     

天然抗氧化剂迷迭香在动物性食品中的应用

迷迭香提取物具有良好的抗氧化性能,是一种天然抗氧化剂.本文综述了迷迭香提取物的抗氧化功能及其作用机理,详细介绍了迷迭香在动物性食品中的应用,并对其前景进行了展望.     

迷迭香水溶性和脂溶性抗氧化剂的分离

研究了石油醚萃取法、水溶解法、浓缩法分离迷迭香水溶性和脂溶性抗氧化剂,对抗氧化剂的得率及总酚含量的影响。结果表明,不同的分离方法对两种抗氧化剂的得率及总酚含量的影响不大。本文同时应用HPLC法测定了3种方法分离所得的抗氧化剂中迷迭香酸、鼠尾草酸和鼠尾草酚的含量。由于水溶解法所得的抗氧化剂中3种活性成分的含量高于石油醚萃取法和浓缩法,综合考虑,水溶解法是一种较好的分离方法。     

Spray-dried rosemary extracts: Physicochemical and antioxidant properties

In this work, spray-dried rosemary extracts were obtained. A 3³ Box-Behnken design was followed to evaluate the influence of drying conditions on the contents of chemical markers and “in vitro” antioxidant activity of the powder. Although the dry products lost some of their polyphenols, they still had antioxidant activities (IC₅₀) ranging from 17.6 to 24.8 μg · mL⁻¹. Analysis of variance proved that studied factors and some of their interactions significantly affected most of the quality indicators. The best combination of conditions to use for obtaining dry rosemary extracts with adequate physicochemical and functional properties involves an extract feed rate of 6 mL · min⁻¹, a drying air inlet temperature of 140 °C and a spray nozzle air flow rate of 50 L · min⁻¹.     

超临界二氧化碳萃取天然迷迭香抗氧化剂有效成分工艺的研究

迷迭香原料采用水蒸气蒸馏法提取迷迭香精油后,残渣经干燥、粉碎,采用超临界二氧化碳提取残渣中抗氧化剂的有效成分,并以鼠尾草酸、鼠尾草酚含量作为衡量工艺的主要指标,以产品的物性和得率作为衡量工艺参数的优劣.采用L9 (33)正交实验考察压力、温度、萃取时间对产品得率等因素的影响;在正交基础上通过单因素分析水携带剂对成品物性、得率以及有效成分的影响.通过正交实验发现:当压力为40MPa、温度80℃、萃取时间2.5h可以达到较好的得率和有效成分含量,但产品为膏状类,不利于工业化生产;通过单因素实验发现:当压力为40MPa、温度80℃、水携带剂含量20%、萃取时间2.5h,产品总得率达到7.2%,鼠尾草酸含量达到32%,鼠尾草酚含量达到8.1%,产品呈粉末状、气味淡,有利于工业化生产和应用.     

Antiaflatoxigenic and antioxidant activities of Garcinia extracts

The effect of hexane and chloroform extracts from the fruit rinds of Garcinia cowa and Garcinia pedunculata on the growth and aflatoxin production in Aspergillus flavus was studied using peanut powder as a model food system. The growth of A. flavus was completely inhibited by the hexane and chloroform extracts from G. cowa and chloroform extract from G. pedunculata at 3000 ppm concentration, which was considered as the minimum inhibitory concentration (MIC). The MIC for the hexane extract of G. pedunculata was at 4000 ppm. Both the extracts from G. cowa inhibited aflatoxin B1 production upto 100% at a lower concentration of 2000 ppm. It was observed that, at lower concentration of the extracts from G. cowa and G. pedunculata, the degree of inhibition of aflatoxin production was much higher than the inhibition of fungal growth. The hexane and chloroform extracts from G. cowa and G. pedunculata were also studied for their antioxidant capacity by the formation of phosphomolybdenum complex at 100 ppm concentration and reducing power by potassium ferricyanide reduction method at various concentrations. Hexane and chloroform extracts from G. cowa showed higher antioxidant capacity than G. pedunculata extracts. Similarly, both the extracts from G. cowa showed higher reducing power than the extracts from G. pedunculata. The antiaflatoxigenic activities of the extracts from G. cowa and G. pedunculata may be due to their effective antioxidative properties, which could suppress the biosynthesis of aflatoxin.     

The antioxidant properties of alcoholic extracts from Sambucus nigra L. (antioxidant properties of extracts)

The antioxidant properties of alcoholic extracts from the leaves, berries and flowers of Sambucus nigra L. are estimated by means of DPPH and β-carotene/linoleic acid methods, and considered in relation to the extraction temperature (in the range 20-200 °C) and to the level of flavonoids most representative for this plant. The extracts of S. nigra act as antioxidants neutralizing the activities of free radicals and inhibiting the co-oxidation reactions of linoleic acid and β-carotene. There is no direct correlation between the level of flavonoids in the extracts and their antioxidant activity. The data presented show that the extraction temperature strongly influences the antioxidant properties of the extracts, especially in the case of leaves.     

大麦提取物的体外抗氧化活性研究

以脱脂大麦粉为原料,分别以70%的甲醇、乙醇、丙酮为溶剂进行提取。通过还原能力、清除DPPH自由基能力及抑制亚油酸氧化三种抗氧化体系的测定比较三种不同提取物的抗氧化性。结果表明,不同提取物在三个体系中都具有较强的抗氧化性质,抗氧化能力的大小顺序为:70%丙酮提取物>70%乙醇提取物>70%甲醇提取物,并且抗氧化能力的大小与提取物中总酚和原花青素的含量高低相一致。     

Rosemary and cancer prevention: preclinical perspectives

Colorectal cancer is the second leading cause of cancer death in Australia. Nutrition, particularly intake of vegetables and certain plant components, has been reported to have a major role in cancer risk reduction. Recently, there has been a growing research interest in rosemary, a common household plant grown in many parts of the world. This study aims to review scientific evidence from all studies, published from 1996 to March 2010 that examined the protective effects of rosemary on colorectal cancer and other types of cancer. Literature evidence from animal and cell culture studies demonstrates the anticancer potential of rosemary extract, carnosol, carnosic acid, ursolic acid, and rosmarinic acid. No evidence for other rosemary constituents was found. The reported anticancer properties were found to arise through the molecular changes in the multiple-stage process of cancer development, which are dose related and not tissue or species specific. This is evidenced by the ability of rosemary to suppress the development of tumors in several organs including the colon, breast, liver, stomach, as well as melanoma and leukemia cells. The results suggested that the different molecular targets modulated by rosemary and its active constituents are useful indicators of success in clinical cancer chemo-prevention trials.     

紫苏水提取物抗氧化活性评价

研究紫苏水提物抗氧化活性.以3%硼砂水溶液为溶剂,提取紫苏中活性成分,制备紫苏水提物;通过微生物活性纸片法研究紫苏水提物对单线态氧的清除作用及表观抗氧化率,证明其抗氧化活性;测定紫苏水提物的还原力、对DPPH自由基的清除能力,并和抗坏血酸进行比较.结果表明:紫苏水提物为一种有效的抗氧化剂,有效浓度为0.12mg/mL紫苏水提物相当于0.04mg/mL抗坏血酸的还原力;对DPPH自由基有明显的清除能力,在活性成分为0.2mg/mL时,其清除率达到91.93%,相当于0.12%抗坏血酸的清除率.     

猪骨髓浸膏的抗氧化性研究

以猪骨髓浸膏为材料,通过NBT、DPPH、ABTS三种自由基体系研究了浸膏中可溶性成分和不溶性成分的抗氧化性,并探讨了特定条件下抗氧化性的变化.结果表明:在NBT体系中,猪骨髓浸膏可溶性成分对超氧自由基有一定的抑制作用;而在DPPH、ABTS体系中,浸膏各成分无抗氧化性.特定条件下猪骨髓浸膏的抗氧化性结果表明:在100℃下,随着保温时间的延长.其抗氧化性在ABTS、DPPH体系有一定程度的增强.在模拟消化环境中,酸性条件对猪骨髓浸膏的抗氧化性没有影响;但胃蛋白酶和酸性条件处理对猪骨髓浸膏的抗氧化性能有一定的增强作用.     

Sugarcane spirit extracts of oak and Brazilian woods: antioxidant capacity and activity

Sugarcane spirit extracts of six different Brazilian woods for potential use in manufacturing aging casks were compared with similar extracts of five oak samples from different geographic origin and heat treatment regarding: (1) content of phenolics and copper; (2) radical reducing capacity and reactivity toward 2,2-diphenyl-1-picrylhydrazyl radical (DPPH·); and (3) effect on the rate of oxygen depletion rate in a peroxidating lipid model system. Total phenolic contents of the Brazilian wood extracts ranged from 0.65 (canela-sassafrás) to 6.4 (jatobá) mmol_GAE L⁻¹ and from 1.39 to 2.87 mmol_GAE L⁻¹ for oak extracts. Flavonoids ranged from 1.54 × 10⁻⁴ (ipê) to 6.5 × 10⁻² (oak) mmol_rutin L⁻¹, and tannins from below the detection limit to 0.22 (jatobá) mmol_{tannic acid} L⁻¹. Correlation was observed for the antioxidant capacity versus phenolics/flavonoids/tannins content, where oak extracts exhibit the highest radical scavenging capacity compared to Brazilian woods. Rate constant for radical scavenging by the extracts ranged from 4.9 × 10³ M⁻¹ s⁻¹ (canela-sassafrás) to 9.7 × 10⁴ M⁻¹ s⁻¹ (oak). The oxygen consumption index showed the Brazilian woods amendoim and jatobá to be more efficient inhibitors than the oak extracts for lipid autoxidation initiated by metmyoglobin, despite that the oak extracts seem to be more efficient to scavenge DPPH·. No simple correlation with phenolics or copper content could be established, and a prooxidative tendency was observed for the extracts of canela-sassafrás, castanheira, and louro-canela.