共查询到17条相似文献，搜索用时 234 毫秒
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续随子种子油提取工艺响应面法优化及成分分析 总被引：1，自引：1，他引：0
确定续随子种子油的最优提取工艺,并对其脂肪酸成分进行分析。通过比较索氏法、超声法、水酶法对续随子种子油的提取效率,选出最佳提取方法。在单因素试验基础上,采用Plackett-Burman 设计筛选索氏提取法中影响提取率的因素。以种子油提取率作为响应目标,对筛选出的因素通过中心复合设计(Central Composite Design)进行优化,确定索氏提取法的最优提取工艺。三种方法的最高得率分别为41.97%,36.38%,34.33%。提取溶剂、液料比、温度、时间为影响最明显的因素。确定了索氏提取法的最优提取工艺为：提取溶剂石油醚,液料比30:1(v:m),提取温度90℃,提取时间9 h。采用气相色谱-质谱法(GC-MS)分析种子油成分,共鉴定出8 种脂肪酸,占总脂肪酸含量的99%以上。其中,不饱和脂肪酸以油酸、亚油酸、α-亚麻酸和花生酸等为主,其含量达到总脂肪酸90%以上。在此工艺条件下,续随子种子油得率理论值为54.353%,实测值为54.175%,与理论值相比,相对误差为0.120%。研究结果可为续随子种子油的提取工艺提供参考,为续随子的进一步开发利用建立基础。 相似文献
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《农产品加工．学刊》2020,(3)
优化了毛酸浆果实多糖的微波辅助提取工艺。在考查料液比、微波时间、浸提时间、物料粒度对毛酸浆果实多糖提取率影响的基础上,采用L_9(3~4)正交试验法对提取工艺进行优化。结果表明,毛酸浆多糖的最佳提取工艺条件为料液比1∶25,浸提时间30 min,微波时间120 s,物料粒度100目。此条件下毛酸浆多糖提取率为5.51%。 相似文献
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通过超声辅助乙醇提取法、超声辅助石油醚提取法和索氏石油醚提取法3种方法提取红树莓籽油,比较提取率、鉴定脂肪酸成分、测定抗氧化活性和总皂甙含量。结果表明:UAE-Et红树莓籽油的提取率最高,为18.55%,UAE-PE和SE-PE的提取率分别为10.18%和13.58%。GC-MS结果表明,3种提取方法共在红树莓籽油中鉴定出32种物质,其中不饱和脂肪酸(亚油酸和亚麻酸等)含量分别为82.71%(UAE-Et)、85.76%(UAE-PE)和88.83%(SE-PE),均超过80%;ω-6/ω-3脂肪酸比例为2.22∶1~2.32∶1。抗氧化活性研究表明,UAE-Et红树莓籽油抗氧化活性最强,其IC 50(半抑制浓度)为4.36 mg·mL^-1。总皂甙含量测定结果表明,UAE-Et红树莓籽油中总皂甙含量最高,为351.88 mg·g^-1,这与GC-MS吻合。 相似文献
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《农产品加工．学刊》2021,(19)
采用亚临界萃取法提取苹果籽油,探究夹带剂比例、原料粒度、萃取温度、萃取时间等因素对苹果籽油得率的影响。通过响应面法对提取工艺进行优化,并利用气相色谱-质谱联用法测定苹果籽油的脂肪酸组成。结果表明,添加正己烷作为夹带剂,取正己烷与四氟乙烷的比例为75.4 g/kg,萃取温度40℃,原料粒度40目,萃取时间60 min;在此条件下,苹果籽油得率为19.36%,提取率达到86%。其不饱和脂肪酸含量高达90%以上,亚油酸含量约占脂肪酸总量的53%。 相似文献
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以正己烷为提取溶剂,研究残次打瓜籽中油脂的提取工艺,结果表明液料比1∶1,提取温度50℃,提取时间60 min,油脂提取率为97.5%。利用气相色谱对打瓜籽油的脂肪酸组成与含量分析表明,其脂肪酸主要有7种,包括油酸(40.89%)、亚油酸(49.87%)、棕榈酸(5.6%)、硬脂酸(1.34%)、花生酸(1.49%)等。 相似文献
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《种业导刊》2019,(11)
为探讨芍药籽油与牡丹籽油的成分差异,评价其营养及保健功能。选取6个品种的芍药籽与6个品种的牡丹籽,采用GB/T 14772—2008提取法、GB/T 17377—2008气象色谱法对芍药籽和牡丹籽的粗脂肪成分进行测定。结果表明,芍药籽油的主要组成不饱和脂肪酸(油酸、亚油酸、亚麻酸)的相对总含量在86.2%～90.9%,牡丹籽油的主要组成不饱和脂肪酸的相对总含量在88.4%～90.6%;芍药籽油的亚油酸含量在22.4%～33.0%,牡丹籽油中亚油酸含量介于19.6%～33.2%;牡丹籽油中的亚麻酸相对含量普遍高于芍药;芍药籽油中的油酸含量普遍高于牡丹。芍药籽油与牡丹籽油的不饱和脂肪酸总含量差异很小,其中芍药籽油的油酸、亚油酸平均值高于牡丹籽油,牡丹籽油的亚麻酸平均值高于芍药籽油,表明芍药籽油具有较高的营养和保健价值。 相似文献
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利用索氏提取法对产于辽宁地区的紫茄子种子中的脂肪酸成分进行了提取,用氢氧化钾-甲醇法和浓硫酸-甲醇法两种不同的方法甲酯化后,通过气相色谱-质谱法对样品中的组成和含量进行了检测。实验结果表明,两种甲酯化方法得到的脂肪酸成分基本相同,但含量有些差异。两种酯化方法得到的脂肪酸主要有8,11-十八碳二烯酸、十六酸(棕榈酸)、硬脂酸,含量分别为29.87%~62.60%、12.83%~16.19%和5.17%~7.17%。氢氧化钾-甲醇法比浓硫酸-甲醇法更加适合辽宁茄子种子样品中脂肪酸的甲酯化。 相似文献
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采用超临界CO2流体萃取南瓜子油,气相色谱等方法测定了南瓜子油的理化成分、脂肪酸组成、品质特性。结果表明,南瓜子含粗蛋白质为33.28%,粗脂肪为42.77%;超临界CO2流体萃取南瓜子油的提取率为90%,明显优于其他提取方法;南瓜子油含丰富不饱和脂肪酸,其中亚油酸占52.29%,所得南瓜子油品质良好酸价为1.46 mg/g,过氧化值为1.62 mmol/kg。 相似文献
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Effect of 1,1-Dimethyl Piperidinium Chloride (Pix) on the Seed, Protein, Oil and Fatty Acids of Egyptian Cotton 总被引：1，自引：0，他引：1
Z. M. Sawan R. A. Sakr F. A. Ahmed A. M. Abd-Al -Samed 《Journal of Agronomy and Crop Science》1991,166(3):157-161
Two field experiments were conducted in 1985 and 1986 on the cotton cultivar, Giza 75 (Gossypiitm barbadense L.) to determine the effect of foliar application of Pix at 0, 10, 20, 40, 60, 80 or 100 ppm on cottonseed yield, seed index, protein and oil contents and fatty acid compositions of cottonseed oil. Pix was sprayed once at 90 days or twice at 90 and 110 days from sowing date.
Seed yield/plant or /ha, protein and oil yield/ha, and seed index increased due to the application of Pix compared to the control. The highest response occurred with 40 or 60 ppm Pix and with one application rather than two. The seed protein percentage increased due to Pix application, especially at 10 ppm. A slight increase in seed oil percentage was detected throughout Pix applications. The number of applications had no noticeable effect on seed protein and oil %. Application of Pix caused a general decrease in the saturated fatty acids (myristic, stearic, and palmitic), associated with an increase in the unsaturated fatty acids (oleic and linoleic). These results were confirmed bv the ratio of total unsaturated fatty acids to total saturated (TU/TS). Ten ppm Pix gave the highest TU/TS. Generally, the saturated fatty acids decreased while the unsaturated fatty acids increased with one application rather than two. Palmitic acid was the most abundant saturated fatty acid, whereas linoleic acid was the most abundant unsaturated ones. 相似文献
Seed yield/plant or /ha, protein and oil yield/ha, and seed index increased due to the application of Pix compared to the control. The highest response occurred with 40 or 60 ppm Pix and with one application rather than two. The seed protein percentage increased due to Pix application, especially at 10 ppm. A slight increase in seed oil percentage was detected throughout Pix applications. The number of applications had no noticeable effect on seed protein and oil %. Application of Pix caused a general decrease in the saturated fatty acids (myristic, stearic, and palmitic), associated with an increase in the unsaturated fatty acids (oleic and linoleic). These results were confirmed bv the ratio of total unsaturated fatty acids to total saturated (TU/TS). Ten ppm Pix gave the highest TU/TS. Generally, the saturated fatty acids decreased while the unsaturated fatty acids increased with one application rather than two. Palmitic acid was the most abundant saturated fatty acid, whereas linoleic acid was the most abundant unsaturated ones. 相似文献
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The potential of near-infrared reflectance spectroscopy (NIRS) for the simultaneous analysis of seed weight, total oil content
and its fatty acid composition in intact single seeds of rapeseed was studied. A calibration set of 530 single seeds was analysed
by both NIRS and gas-liquid chromatography (GLC) and calibration equations for the major fatty acids were developed. External
validation with a set of 75 seeds demonstrated a close relationship between NIRS and GLC data for oleic (r = 0.92) and erucic
acid (r = 0.94), but not for linoleic (r = 0.75) and linolenic acid (r = 0.73). Calibration equations for seed weight and
oil content were developed from a calibration set of 125 seeds. A gravimetric determination was used as reference method for
oil content. External validation revealed a coefficient of correlation between NIRS and reference methods of 0.92 for both
traits. The performance of the calibration equations for oleic and erucic acid was further studied by analysing two segregating
F2 seed populations not represented in the calibration set. The results demonstrated that a reliable selection for both fatty
acids in segregating populations can be made by using NIRS. We concluded that a reliable estimation of seed weight, oil content,
oleic acid and erucic acid content in intact, single seeds of rapeseed is possible by using NIRS technique.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
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为探究红树莓菇娘果复合饮料的最佳配方,以红树莓、菇娘果两种果实的汁液为原料,辅以白砂糖、复合稳定剂进行复配试验。以感官评分为考察指标,设计单因素试验,确定红树莓汁、菇娘果汁、白砂糖和复合稳定剂（魔芋胶+黄原胶）的最佳添加量。在单因素试验的基础上,设计L9(34)正交试验,优化饮料原、辅材料的配比,得到最优配方为：以水的质量为基础质量,稳定剂添加量0.18%,白砂糖添加量6%,菇娘果汁添加量60%,红树莓汁添加量50%。采用最优工艺制作的复合饮料产品色泽清亮,稳定均匀,酸甜适中,融合了红树莓和菇娘果的风味,且其理化性质及微生物指标均符合国家质量标准要求。 相似文献
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白菜型油菜黄、黑籽间种皮、胚中蛋白质、脂肪及其组份的比较研究 总被引：1，自引：0，他引：1
本文利用主成分分析对6个白菜型油菜品种（系）黄、黑籽间种皮、胚、籽粒中蛋白质、17种氨基酸、含油量和7种脂肪酸进行了比较研究。表明：黄籽蛋白质、氨基酸和含油量高于黑籽是由于黄籽种皮较薄，胚占的比重较大，种皮中各种含量显著或极显著高于黑籽种皮所造成；而黄籽胚中蛋白质和氨基酸含量低于黑籽胚；黄、黑籽间胚含油 相似文献