Effect of refining on the lignan content and oxidative stability of oil pressed from roasted sesame seed

Oxidative stability of pressed and refined sesame oils during seven consecutive months of storage at room temperature was studied comparatively. Lignans, peroxide value (PV), p‐anisidine value (AV) and total oxidation value (TOTOX) were determined as evaluation indices. PV, AV and TOTOX of sunflower, corn and peanut oils were simultaneously monitored to compare their oxidative storage stabilities with the sesame oils. The total amount of lignans in the pressed and refined sesame oils were 1103 and 790 mg per 100 g respectively. The contents of sesamin and sesemolin in the pressed sesame oil were 734 and 369 mg per 100 g respectively. Sesamin and sesamolin content were reduced by 256 and 159 mg per 100 g, respectively, after refining. Nearly 40% of the sesamin epimerised to asarinin after oil refining. The results indicate that sesame oils pressed from roasted seed have far superior storage stability to oxidation than the other vegetable oils. This difference may be due to much higher sesamin and sesamolin contents in the pressed sesame oils. The results suggest lignan compositions and levels could be used as key indicators for evaluating the oxidative storage stability of sesame oil products as well as to differentiate between pressed and refined sesame oils.     

Fatty acid composition,oxidative stability,antioxidant and antiproliferative properties of selected cold-pressed grape seed oils and flours

Cold-pressed chardonnay, muscadine, ruby red, and concord grape seed oils and their defatted flours were studied for their fatty acid composition, oxidative stability and antioxidant and antiproliferative activities. The phenolic profiles of the seed flours were also measured. The most abundant fatty acid in the oils was linoleic acid, ranging from 66.0 g/100 g of total fatty acids in ruby red seed oil to 75.3 g/100 g of total fatty acids in concord seed oil. The oils were also high in oleic acid and low in saturated fat. Ruby red grape seed oil recorded the highest oxidative stability index of 40 h under the accelerated conditions. Total phenolic content (TPC) was up to 100 times lower in the oils than in the flours. Lutein, zeaxanthin, cryptoxanthin, β-carotene, and α-tocopherol levels were also measured. DPPH radical-scavenging capacity ranged from 0.07 to 2.22 mmol trolox equivalents (TE)/g of oil and 11.8 to 15.0 mmol TE/g of flour. Oxidative stability of menhaden fish oil containing extracts of the seed flours was extended by up to 137%. HPLC analysis was conducted to determine the levels of free soluble, soluble conjugated and insoluble bound phenolics in the seed flours. The phenolic compounds analyzed included catechin, epicatechin, epicatechin gallate, quercetin, gallic acid, and procyanidins B1 and B2. Antiproliferative activity was tested against HT-29 colon cancer cells. All of the seed flours and muscadine seed oil registered significant (P < 0.05) inhibition of cancer cell growth. The results from this study demonstrate the potential of developing value-added uses for these seed oils and flours as dietary sources of natural antioxidants and antiproliferative agents for optimal health.     

改良的DPPH与ABTS自由基法评价不同葡萄籽油抗氧化能力

本研究采用改良的1,1-二苯基-2-三硝基苯肼(1,1-diphenyl-2-picryhydrazyl,DPPH)法和2,2'-联氮双-(3-乙基苯并噻唑林-6-磺酸)二胺盐[2,2'-azinobis(3-ethylbenzothi azoline-6-sulfonic acid)ammonium salt,ABTS]法测定不同方法提取葡萄籽油极性部分、非极性部分及全油的抗氧化能力,测定不同葡萄籽油多酚含量,研究多酚与葡萄籽油极性部分抗氧化能力的相关性。热榨毛油与溶剂法毛油在经过精炼后多酚含量和抗氧化能力显著降低;在溶剂法精炼油、热榨法精炼油、低温压榨油、超临界CO_2萃取葡萄籽油中,低温压榨油极性部分清除DPPH与ABTS自由基的能力最强,低温压榨油的多酚含量最高,超临界CO_2萃取葡萄籽油非极性部分与低温压榨油全油的DPPH与ABTS自由基清除能力最强;各不同葡萄籽油总酚含量与极性部分DPPH和ABTS自由基的清除能力具有显著的正相关性。     

Tocols in caneberry seed oils

The compositional analysis of tocols in oils extracted from Korean caneberry seeds was compared with commercial soybean, corn, olive, canola, perilla, and grape seed oils. The oils from caneberry seeds of six different species were extracted using either a chloroform–methanol–water system or hot hexane. Tocols from all of the oils were analysed using isocratic HPLC. The contents of total tocopherols in the caneberry seed oils were about 75–290 mg/100 g oil, whereas tocotrienols were not detected. γ-Tocopherol was the most abundant tocopherol (31.8–239 mg/100 g oil) in the caneberry seed oils, followed by α-tocopherol (7.6–58.2 mg/100 g oil). The contents of total tocols in soybean, corn, olive, canola, perilla, and grape seed oils were 99.9, 61.1, 28, 27, 45.4, and 52.2 mg/100 g oil, respectively. Total tocol content was higher in most of the caneberry seed oils including the refined ones than in the commercial vegetable oils.     

Identification of bioactive compounds and total phenol contents of cold pressed oils from safflower and camelina seeds

The compositions of fatty acids, tocopherols, polyphenols, sterols, and the total phenol contents of cold pressed oils obtained from five varieties of safflower seeds and ten varieties of camelina seeds cultivated in Turkey were determined. Total phenol contents of safflower oils were higher (272.20–525.30 mg GAE/kg) than camelina seed oils (25.90–63.70 mg GAE/kg). Apigenin, luteolin, tyrosol, syringic acid, 3-hydroxytyrosol, p-coumaric acid and sinapic acid were detected in seed oils. Camelina seed oils were rich in tocopherol (144.11–168.69 mg/100 g). γ-Tocopherol was the predominant tocopherol in camelina seed oils consisting of averagely 80% of total tocopherol, while α-tocopherol was the main compound of safflower seed oils, representing 97.85–98.53% of total tocopherols. β-Sitosterol was the major sterol in both type of seed oils. Its concentration ranged between 92.51–121.83 mg/100 g and 80.52–25.54 mg/100 g in safflower seed and camelina oils, respectively. Camelina seed oils contained 22.31–26.57% linolenic acid, 21.25–24.05% linoleic acid and 19.46–21.47% oleic acid, whereas safflower seed oils mainly consisted of linoleic (28.03–76.85%) and oleic (13.01–62.61%) acids.     

Bioactive compounds of cold pressed spice paprika seeds oils

The aim of present study was to report the industrial production of cold pressed spice paprika seed oil and to evaluate the effect of raw material variety and growing season factors on the fatty acid profile, tocopherol, and carotenoid contents. The spice paprika seed oils were cleanly transparent with shiny deep red color, due to the presence of considerable amount of carotenoids (629.35–848.39 µg/g). The main carotenoids were the capsantin, lutein, capsorubin, β‐carotene as free xanthophylls, mono‐ or di‐esters. The fatty acid profile demonstrated the predominant concentration (70.79–74.31%) of cis‐linoleic acid. Among the saturated fatty acid the most prevalent was the palmitic acid (11.08–12.20%), followed by the stearic acid (3.10–3.75%). The γ‐tocopherol (57.85–83.57 mg/100 g) was the major analogue in tocopherol fraction of paprika seeds oils, while the α‐tocopherol level was relatively low (4.50–16.41 mg/100 g). The oils had pleasant smell and flavor in which appeared the mild aroma of dried spice paprika.

Practical applications

The article deals with edible oil that has interesting composition from the technological and nutritional points of view. The high content of phytonutrients in the oils produced and examined in this work makes them preferred in modern nutrition programs with salads, as cooking oils, dressing and as good materials in many food industries. Owe to high antioxidant levels in paprika seed oils they can be used in cosmetic and pharmaceutical industries to increase bio‐efficiency of many products. The supposed consumption (～10 g as salad oil) can cover the 70–74% of the suggested minimum daily intake of linoleic acid and 3.7–13.6% of the vitamin E (α‐tocopherol) NRV, and 10.3–14.2% of the vitamin A (retinol equivalent) NRV. The available medicine studies have suggested the valuable properties of the γ‐tocopherol. It is worth to mention the lutein and zeaxantin levels (956.1–1332.9 µg/10 g and 106.3–207.4 µg/10 g respectively), due to their protective effect against age related macular degeneration.     

Chemical Composition Analysis,Sensory, and Feasibility Study of Tree Peony Seed

Eight wild species in Sect. Moutan DC (tree peony) of the genus Paeonia grown in natural habitats and 1 cultivated specie were investigated to analyze their fatty acid and bioactive phenolic compound profiles. For fatty acid composition, P. ludlowii contained the lowest α‐linolenic acid (27.68%) and P. jishanensis contained the highest (51.96 %) content of the 9 species. For phenolic compounds, P. qiui contained the highest resveratrol (2.12 mg/g), P. delavayi contained the highest β‐gentiobiosylpaeoniflorin (26.23 mg/g), and P. ostii contained the highest paeoniflorin (23.66 mg/g). P. ostii was selected to perform a feasibility study because of its relatively high level of α‐linolenic acid 46.53%, low in ω‐6 to ω‐3 ratio of 1:2, and high level of the preferred bioactive phenolic compounds l including paeoniflorin and resveratrol. Physical pressing and refining process were conducted to obtain P. ostii seed oil. It exhibited bland sensory attributes described as slight grassy, very slight nutty, no painty or fishy aroma and slight grassy, slight nutty flavor with a very slight throat catch. Tocol results reported high level in tree peony seed oil 223.5 ± 13.65 mg/100 g with γ‐tocopherol 70.1 ± 2.14 mg/100 g, and γ‐tocotrienol 149.6 ± 15.83 mg/g. Because of the high total tocol, γ‐tocopherol and γ‐tocotrienol levels, and tree peony seed oil exhibited better oxidation stability than flaxseed oil even with similar α‐linolenic acid levels. In addition, high levels of γ‐tocopherol and γ‐tocotrienol can introduce therapeutic effects such as antiinflammation and antioxidation. Therefore, this study showed that tree peony seed oil has a great potential to be used in edible oil, nutraceutical supplement, and other health care products.     

焙炒处理对不同植物油品质特性的影响北大核心CSCD

为了研究焙炒对植物油品质的影响,以油菜籽、亚麻籽、花生、葵花籽和芝麻为原料,经焙炒处理后采用液压压榨法制油(热榨油),分析植物油的理化指标(酸值、过氧化值、水分及挥发物、色泽)、主体组分(脂肪酸组成及含量、甘三酯组成及含量、挥发性组分)和总酚含量,并与未焙炒处理直接压榨制取的油(冷榨油)作对比。结果表明:热榨油酸值和过氧化值显著高于冷榨油(p<0.05),其中,热榨亚麻籽油酸值(KOH)最高(0.96 mg/g),热榨菜籽油过氧化值最高(1.02 mmol/kg);冷榨油水分及挥发物含量显著高于热榨油(p<0.05),其中冷榨花生油水分及挥发物含量最高(0.16%);热榨油的色泽较冷榨油深,其中热榨菜籽油的色泽最深(R1.1,Y31);焙炒对植物油脂肪酸和甘三酯组成及含量无显著影响(p>0.05);热榨油中醇类、醛类和酸类等挥发性组分较少,但杂环类物质较多;热榨菜籽油、亚麻籽油、花生油、葵花籽油和芝麻油总酚含量分别是其冷榨油的1.38、1.57、1.51、1.80倍和1.27倍。因此,焙炒对植物油品质影响较大,应根据生产需要选择合适的预处理方式。     

Influence of roasting pretreatment on high‐oleic rapeseed oil quality evaluated by analytical and sensory approaches

Qualitative and quantitative effects on the contents of minor components of cold‐pressed high‐oleic rapeseed oil (HORO) were evaluated in a function of different roasting temperatures (80, 100, 120 and 140 °C). Along with roasting temperature elevation, a significant increase in the content of total tocopherols up to 32% (mainly γ‐T homologue) and a slight increase of total sterols concentration (up to 5%) were observed, whereas no significant changes in the fatty acid composition occurred during seeds thermal pretreatment. Additionally, an increased degree of hydrolysis and lipid oxidation was reported; however, obtained results were within codex limits. The peroxide value of the oil ranged from 1.30 to 2.34 mEq O₂ kg^?1, while the acid value did not exceed 0.46 mg/KOH g. Principal component analysis was capable of differentiating between rapeseed oils acquired from seeds pretreated with different roasting temperatures.     

Lipids and phytosterol oxidation products in commercial potato crisps commonly consumed in Sweden

The stability of frying oils and fried foods is mainly affected by the fatty acids present and by the types and levels of minor components such as phytosterols and tocopherols. This study assessed the current status of lipid composition and the occurrence of oxidised phytosterols as a parameter of lipid oxidation in potato crisps available in the Swedish market. Fatty acid composition and concentrations of tocopherols, sterols and phytosterol oxidation products (POPs) were determined in 16 commercial potato crisp samples of two types, distinguished by a high or low fat content. The fatty acid composition in most samples was dominated by saturated and monounsaturated fatty acids. The sum of α-tocopherol and γ-tocopherol content varied from undetectable levels to 10.2 mg/100 g potato crisps, with α-tocopherol dominating. Among the tocotrienols, α-tocotrienol and γ-tocotrienol were present in almost equal proportions, while δ-tocotrienol was present in all samples but in smaller amounts. Fatty acid composition, tocopherol and tocotrienol content, showed that all potato crisp samples were prepared in palm oil or a blend of palm oil and unspecified fats and oils. Total sterol content ranged from 10.2 to 93.1 mg/100 g sample, with β-sitosterol being the major sterol in all samples. The content of POPs ranged from 0.05 to 0.68 mg/100 g potato crisps. In general, there were no significant differences in content of POPs between high and low fat samples, and generally no correlations could be established between content of POPs and fatty acid, tocopherol, tocotrienol, and sterol content among the potato crisp samples.     

Composition,characterisation and analysis of seed oil of Suaeda salsa L

Awareness of vegetable oils being beneficial for health has attracted researchers in exploring different vegetable oils. In this study, Suaeda salsa L. seed oil was extracted and characterised. The yield of S. salsa L. seed oil was 25.99%. Acidity, iodine number, saponification number, peroxide value and unsaponifiable matter were used to assess seed oil quality. Melting point and melting enthalpy were found to be ?35.75 °C and 26.39 J g^?1, respectively, from differential scanning calorimeter‐melting curves. Fatty acid and triacylglycerol composition of this oil was analysed by GC‐MS and HPLC‐MS, respectively. The main fatty acid in S. salsa L. seed oil is Linoleic (65.03%), and the dominant triacylglycerols (TAGs) were LLL and OLL. The oil was found to have high amounts of α‐tocopherol (36.72 mg 100 g^?1) and β‐tocopherol (34.76 mg 100 g^?1). All the results suggest that S. salsa L. seed oil may have potential applications in relating industries.     

冷、热榨文冠果油品质比较分析

对以河南济源产文冠果为原料生产的冷榨油和热榨油的理化指标、微量元素含量及脂肪酸组成进行对比分析。结果表明:文冠果种子为棕色扁球状,容重0. 936 kg/L,百粒重为119. 7 g;文冠果种仁中水分、粗蛋白质、粗脂肪含量分别为8. 61%、17. 4%、43. 7%,总糖未检出;热榨文冠果油的过氧化值、皂化值和灰分比冷榨文冠果油的高,而酸价比冷榨文冠果油的低;冷榨文冠果油的铜、锌、锰和铬含量比热榨文冠果油的高,而铁含量比热榨文冠果油的低;热榨和冷榨文冠果油的脂肪酸组成差别不大,主要由10种脂肪酸组成,不饱和脂肪酸含量超过90%,其中亚油酸、油酸含量较高。     

BERRY SEEDS: A SOURCE OF SPECIALTY OILS WITH HIGH CONTENT OF BIOACTIVES AND NUTRITIONAL VALUE

Selected berry seed oils from blackberry, blueberry, cranberry, strawberry, red raspberry and kiwi were characterized for their quality and nutritional characteristics. These oils are by-products of berry juice production that have only recently gained commercial interest. Free fatty acid content was below 1.6% for all examined oil samples. Peroxide value ranged between 0.6 and 44 mg O₂/kg oil for blackberry and kiwi seed oils, respectively, and p -anisidine value varied from 6 in cranberry to 23 in strawberry. Linolenic acid content ranged from 17.53% in blackberry seed oil to 57.60% in kiwi seed oil. The oxidative stability of all oils was rather low (0.17 h for kiwi to 8.4 h for blackberry at 97.8C). Phytosterol contents ranged between 403 and 692 mg/100 g for blackberry and cranberry, respectively. The content of tocols (tocopherol  +  tocotrienol) varied from 34.4 for kiwi to 2,133 mg/kg for red raspberry seed oils.

PRACTICAL APPLICATIONS

A waste stream of fruit processing is used to extract the oil from berry seeds. Such oils are particularly rich in essential fatty acids (with a favorable low n-6/n-3 ratio) and antioxidants. They are incorporated in cosmetic preparations such as hand and body creams, and shampoos. Their composition is also interesting from a nutritional point of view. As the commercial interest is growing, chemical studies are necessary to elucidate the composition, activity and stability of different berry seed oils.     

提取方式对接骨木籽油品质的影响

目的：比较冷榨法、索式提取法、亚临界丁烷萃取法对接骨木籽油得率、理化指标、脂肪酸组成以及体外抗氧化活性的影响。方法：以接骨木籽为原料,采用冷榨法、索式提取法和亚临界丁烷萃取法3种方式提取接骨木籽油,参考国家标准测定其理化指标与体外抗氧化活性,并利用GC-MS联用技术分析其脂肪酸组成。结果：3种提取方式中,亚临界丁烷萃取法的得油率最高(28.8%),索式提取法次之(27.6%),冷榨法最低(18.8%);亚临界丁烷萃取法所得的接骨木籽油的酸价和过氧化值最低,碘值最高;3种不同提取方式所得的接骨木籽油脂肪酸组成相似,主要成分为亚麻酸、亚油酸、棕榈酸,但含量存在一定差异,亚临界丁烷萃取法所得的接骨木籽油的亚麻酸含量最高,为46.94%;3种提取方式所得的接骨木籽油均具有良好的抗氧化活性,但亚临界丁烷萃取法的DPPH自由基、ABTS自由基清除能力高于冷榨法与索式提取法。结论：不同提取方法对接骨木籽油的品质存在一定影响,亚临界丁烷萃取法对接骨木籽油有较高提取率,所得油脂品质较好,是提取接骨木籽油的理想方法。     

盐肤木果及其果油与籽油品质比较

以不同产地盐肤木果为原料,分别采用溶剂浸出法、热榨法、冷榨法提取盐肤木果油,对盐肤木果的主要组分和盐肤木果油的品质进行检测分析,并与盐肤木果籽油进行比较。结果表明：盐肤木果粗脂肪质量分数为19.17%～19.62%,粗蛋白质量分数为8.87%～11.98%,粗纤维质量分数为25.20%～31.41%;盐肤木果毛油的酸价（以KOH计）为12.5～22.7?mg/g,过氧化值为14.5～47.9?mmol/kg,毛油色泽很深且难以脱除。盐肤木果油的主要脂肪酸是棕榈酸（25.92%～38.50%）、油酸（14.77%～18.49%）、亚油酸（38.05%～54.30%）、硬脂酸（2.30%～3.26%）、α-亚麻酸（1.75%～2.56%）;盐肤木果油VE含量为682.8～837.9?mg/kg,总黄酮质量浓度为102.28～165.92?mg/100?mL,甾醇含量为37.28～108.07?mg/100?g;盐肤木果油不饱和脂肪酸相对含量明显低于籽油（分别约为70%和90%）,亚油酸相对含量显著低于籽油（分别为54.30%和74.08%）,棕榈酸相对含量高于籽油（分别为25.92%和8.13%）。盐肤木果油与籽油的脂肪酸组成及毛油品质有很大差距。?     

Chamaerops humilis L. var. argentea André Date Palm Seed Oil: A Potential Dietetic Plant Product

Chamaerops humilis L. var. argentea André (C. humilis) date palm seeds are an underutilized source of vegetable oil, and no studies describing their physicochemical characteristics to indicate the potential uses of this seed or seed oil have been reported. The oil content of the seeds is about 10%, mainly composed of oleic acid (38.71%), lauric acid (21.27%), linoleic acid (15.15%), palmitic acid (9.96%), and stearic acid (7.17%). The tocol (tocopherols and tocotrienols) content is 74 mg/100 g, with δ‐tocotrienol as the major contributor (31.91%), followed by α‐tocotrienol (29.37%), γ‐tocopherol (20.16%), and γ‐tocotrienol (11.86%). Furthermore, this oil shows high thermal stability. The differential scanning calorimetery curves revealed that the melting and crystallization points are 9.33 °C and –15.23 °C, respectively.     

花椒籽油与花椒油风味及综合品质对比分析

以新鲜花椒籽为原料,分别采用压榨法和浸出法得花椒籽毛油,对毛油进行精炼得花椒籽精炼油,检测花椒籽油中挥发性风味成分、酸价、过氧化值、酰胺类化合物含量及感官评价,并与8 个市售花椒油的品质进行对比。结果表明：新鲜花椒籽压榨和浸出毛油酸价（以KOH计）分别为5.94、7.37 mg/g,过氧化值分别为1.13、0.59 mmol/kg,明显优于贮存不当的花椒籽所制取的毛油,精炼花椒籽油的酸价和过氧化值均达到GB/T 22479—2008《花椒籽油》中一级油指标要求;花椒籽油中酰胺类化合物含量为7.82～9.80 mg/g,达到并明显优于DBS 51/008—2019《花椒油》中对应指标大于等于2.0 mg/g的要求,也在8 个市售花椒油酰胺类化合物含量7.92～19.11 mg/g范围之内;花椒籽油和花椒油中挥发性风味成分含量最高的均为烯烃类化合物,其次为醇类;2 种油脂的感官评价均呈现明显的麻味和辛辣味。新鲜压榨花椒籽油与作为风味油或调味油的商品花椒油相比,无论是在反映花椒油特征的酰胺类化合物含量和挥发性风味成分含量方面,还是感官评价方面均具有高度相似性和一致性。新鲜花椒籽压榨油香味浓郁、麻味强烈,可以作为优良的花椒籽风味油开发应用,这对实现花椒籽高值化加工利用有重要意义。     

Optimization of Hull‐Less Pumpkin Seed Roasting Conditions Using Response Surface Methodology

Abstract: Response surface methodology (RSM) was applied to optimize hull‐less pumpkin seed roasting conditions before seed pressing to maximize the biochemical composition and antioxidant capacity of the virgin pumpkin oils obtained using a hydraulic press. Hull‐less pumpkin seeds were roasted for various lengths of time (30 to 70 min) at various roasting temperatures (90 to 130 °C), resulting in 9 different oil samples, while the responses were phospholipids content, total phenols content, α‐ and γ‐tocopherols, and antioxidative activity [by 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH) free‐radical assay]. Mathematical models have shown that roasting conditions influenced all dependent variables at P < 0.05. The higher roasting temperatures had a significant effect (P < 0.05) on phospholipids, phenols, and α‐tocopherols contents, while longer roasting time had a significant effect (P < 0.05) on γ‐tocopherol content and antioxidant capacity, among the samples prepared under different roasting conditions. The optimum conditions for roasting the hull‐less pumpkin seeds were 120 °C for duration of 49 min, which resulted in these oil concentrations: phospholipids 0.29%, total phenols 23.06 mg/kg, α‐tocopherol 5.74 mg/100 g, γ‐tocopherol 24.41 mg/100 g, and an antioxidative activity (EC₅₀) of 27.18 mg oil/mg DPPH. Practical Application: A well‐defined roasting process is very important for the food industry to be able to produce pumpkin seed oil with desirable nutritive and chemical characteristics of this unique salad oil, which changes during the roasting. This study contributes to the knowledge of a product design process for the roasting conditions of naked pumpkin seeds based on results that have demonstrated that an increase in roasting temperature significantly increased the biochemical values and antioxidant properties of the obtained virgin oils.     

不同提取方法对牡丹籽油品质的影响

牡丹籽油含有丰富的α-亚麻酸和脂溶性伴随物,提取方法对牡丹籽油的品质和活性成分有显著影响.本实验采用5种不同的方法(水酶法、微波辅助水酶法、水代法、冷榨法、有机溶剂浸提法)提取牡丹籽油,并对其理化性质、货架期、脂溶性伴随物含量以及挥发性成分进行了研究.结果发现水酶法提取的油酸价和过氧化值相对较低,货架期最长(4.67 ...     

不同提取方法的红树莓籽油品质及体外抗氧化活性对比

以红树莓籽为原料,采用索氏提取、超声提取、高剪切-超声提取法提取红树莓籽油,比较三种提取方法对红树莓籽油理化性质、脂肪酸组成成分、籽油中β-谷甾醇和α-生育酚含量以及体外抗氧化能力的影响,探究提取的最佳方法。结果表明,高剪切-超声提取法提取的红树莓籽油酸值、皂化值、过氧化值低,碘值高,在红树莓籽油中检测出19种脂肪酸,占红树莓籽油总成分的98.22%,其中亚麻酸和亚油酸分别为29.98%和48.07%;索氏提取法提取的红树莓籽油中β-谷甾醇和α-生育酚含量高,分别为97.37 mg/100 g和18.88 mg/100 g,对ABTS自由基的清除作用最强,与超声提取和高剪切-超声提取法有极显著性差异;超声提取法提取的红树莓籽油对DPPH自由基清除作用最强,只与高剪切-超声提取法有显著性差异。综合考虑,采用高剪切-超声提取法提取红树莓籽油,籽油品质好,活性成分丰富,且具有一定抗氧化活性。