scholarly journals EFFECTS OF PROCESS PARAMETERS ON THE EXTRACTION EFFICIENCY AND CHEMICAL CHARACTERISTICS OF TEA SEED OIL FROM “TRUNGDU” TEA VARIETY

2019 ◽  
Vol 57 (3B) ◽  
pp. 75
Author(s):  
Thao Thi Phuong Phan ◽  
Thi Thu Hang Tran ◽  
Hoang Dinh Hoa ◽  
Vu Hong Son
Keyword(s):  
Particle Size ◽  
Linoleic Acid ◽  
Process Parameters ◽  
Seed Oil ◽  
Extraction Efficiency ◽  
Acid Value ◽  
Chemical Characteristics ◽  
High Quality ◽  
Tea Seed Oil ◽  
Extraction Cycle

This research was aimed at investigating the effects of some extraction process parameters on the extraction efficiency and some chemical characteristics of tea seed oil from “Trungdu” tea variety, one of the high-quality vegetable oils, similar to olive oil with high portion of unsaturated fatty acids, especially essential linoleic acid and low content of saturated fat. This work reports for the first time the effects of process parameters using solvent extraction method on the efficiency and chemical characteristics of “Trungdu” tea seed oil. The study parameters were particle size (0.25-2.00 mm), material/solvent ratio (1/12-1/6), temperature (25-55oC), time (5-11 h), speed of solvent movement (0-250 r/m) and extraction cycle (1-3 times). The responses such as extraction efficiency, chemical characteristics (acid, peroxide, iodine and saponification values) were determined. The results indicated that the extraction efficiency was affected by all designed parameters. In addition, the temperature, particle size and extraction time had the most significant effect on the iodine value and acid value. The extraction temperature and the speed of solvent movement had pronounced effects on all the acid value, peroxide value, iodine value and saponification value of tea seed oil. However, ratio of material/solvent and extraction cycle did not appreciably effect on chemical characteristics of tea seed oil. Furthermore, the optimal extraction efficiency related to higher quality properties had been achieved in the range of 35 to 45oC, 7 to 9 hours, with a particle size of 0.5 mm, material/content ratio 1/8 to 1/12, movement speed of solvent 200 to 250 r/m and extraction cycle 1 or 2 times. Therefore, the results from this work will be useful for developing an optimal procedure for obtaining tea seed oil.  In addition, tea seed oil with the main acid component is oleic acid and linoleic acid, is considered a high quality oil.

scholarly journals Effect of process parameters on the antioxidant activity of Vietnamese tea (Camellia sinensis O. Kuntze) seed oil

2021 ◽  
Vol 63 (6) ◽  
pp. 63-67
Author(s):  
Thi Phuong Thao Pham ◽  
◽  
Trung Khoa Giang ◽  
Hong Son Vu ◽  
◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Particle Size ◽  
Seed Oil ◽  
Solvent Ratio ◽  
Total Tocopherol ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Tea Seed Oil ◽  
Total Polyphenol Content ◽  
Extraction Cycle

This research was carried out on Tea (Camellia sinensisO. Kuntze.) seeds (containing 22.01% oil) harvested from Trung du tea trees varieties, cultivated in Phu Tho, Vietnam to select the most suitable processing methods which enhance the high antioxidant activity of the oil in the seed oil extraction. The objective of this research is to study the effects of particle size, material/solvent ratio, temperature, time, speed of solvent movement, and extraction cycle on antioxidant properties of the oil (by analysing IC50, total polyphenol content, total carotenoid, and total tocopherol value). The suitable extraction conditions were determined as follows: particle size was 0.25-0.5 mm, the solid-solvent ratio was 1/8-1/10, the extraction temperature was 35-45oC, the extraction time was 7-9h, speed of solvent movement was 200-250 r/m and the extraction cycle was two times. The tea seed oil extracted under the suitable conditions had the DPPH radical scavenging activity (IC50), total polyphenol content, total carotene, and total tocopherol of 62.19 mg/ml, 4.45 mgGAE/g dry weight, 89 mg/kg, and 710 mg/kg, respectively. The high content of antioxidants makes tea seed oil has a good antioxidant capacity, high oxidation stability, and relatively long shelf life. Therefore, research on using wasted tea seed sources to extract oil has great potential for the vegetable oil industry and a high potential of application in food technology.

Investigation on the Extraction and Conjugate of Linoleic Acid of Purple Medic Seed

2011 ◽  
Vol 347-353 ◽  
pp. 3337-3340
Author(s):  
Shu Ting Qi ◽  
Yu Xin Shi ◽  
Ming Dong ◽  
Hong Qing Wu ◽  
Di Mu
Keyword(s):  
Fatty Acid Composition ◽  
Linoleic Acid ◽  
Solvent Extraction ◽  
Seed Oil ◽  
Extraction Efficiency ◽  
Oil Quality ◽  
Total Lipids ◽  
Solvent Type ◽  
Effects Of Temperature

Methods currently used for the quantitative determination of total lipids and fatty acid composition in plant require solvent extraction. This study examined the solvent extraction of purple medic seed oil. Results varied with different extraction conditions. The effects of temperature, extraction time, sample size and solvent type on the extraction efficiency and oil quality were studied. The amount of extract collected was highest when ether absolute was used as a solvent for solvent extraction.

scholarly journals Aloe ferox Seed: A Potential Source of Oil for Cosmetic and Pharmaceutical Use

2013 ◽  
Vol 8 (3) ◽  
pp. 1934578X1300800 ◽  
Author(s):  
Rachael Dangarembizi ◽  
Eliton Chivandi ◽  
Kennedy Erlwanger
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Seed Oil ◽  
Soxhlet Extraction ◽  
Acid Value ◽  
Potential Source ◽  
Saponification Value ◽  
Aloe Ferox ◽  
Pharmaceutical Industries ◽  
Important Medicinal Plant

Aloe ferox is an important medicinal plant in Southern Africa whose seeds could be useful as a source of oil. The fatty acid composition of A. ferox seed oil was determined using gas chromatography. The physicochemical properties of the oil were analysed using standard methods. The seeds yielded 19.4% of a light textured oil using the Blight and Dyer's method and 12.3% using the Soxhlet extraction method. The saponification value of the seed oil was 241.9 mg KOH/g and the peroxide value was 8.9 meq/kg. The acid value of the seed oil was 51.5 mg KOH/g (25.9% free fatty acids). The major fatty acids found in the seed oil were linoleic acid (71.8%), oleic acid (12.0%), palmitic acid (11.2%) and stearic acid (2.9%). The results obtained suggest that as A. ferox seed oil is high in linoleic acid, it could be potentially exploited in the cosmetic and pharmaceutical industries.

scholarly journals Comparison of the Characteristics of Two Kinds of Tea Seed Oils: Oil-tea Seed Oil and Green-Tea Seed Oil

2018 ◽  
Vol 7 (1) ◽  
pp. 56
Author(s):  
Xinchu Weng ◽  
Zhuoting Yun ◽  
Chenxiao Zhang
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Oleic Acid ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Green Tea ◽  
Acid Level ◽  
Seed Oil ◽  
Seed Oils ◽  
Tea Seed Oil

Physicochemical properties, fatty acid composition, antioxidant compounds and oxidative stability of oil-tea seed oil (Camellia oleifera Abel.) and green-tea seed oil (Camellia sinensis O. Ktze.) were investigated. The refractive index, saponification value, iodine value, acid value, peroxide value, unsaponifiables were determined to assess the quality of the oils. The major fatty acids of green-tea seed oil and oil-tea seed oil were oleic acid, linoleic acid and palmitic acid. Green-tea seed oil was typical oleic-linoleic-oil with 52.13% oleic acid and 24.32% linoleic acid level, whereas oil-tea seed oil was typical oleic-oil with very high oleic acid level (73.67%). The amount of total phenols, α-tocopherol and β-carotene of green-tea seed oil were 8.68 mg/kg, 160.33 mg/kg, 3.20 mg/kg, respectively, whereas they were 17.90 mg/kg, 85.66 mg/kg, 1.18 mg/kg in oil-tea seed oil, respectively. Green-tea seed oil contained high amounts of α-tocopherol which was nearly twice that of oil-tea seed oil. The initial induction period (IP) values of green-tea seed oil and oil-tea seed oil were 6.55h and 6.08h at 110 oC by OSI method, respectively, which shows the oxidative stability of two kinds of tea seed oils were preferable. Therefore, oil-tea seed oil could be a good dietary supplement with high level of monounsaturated fatty acids and similar fatty acid composition of olive oil. Green-tea seed oil was a new oil resource which is rich in α-tocopherol in China.

scholarly journals Effects of process parameters on density and strength of cold briquetted sponge iron

2017 ◽  
Vol 20 (K6) ◽  
pp. 22-28
Author(s):  
Luu Van Dao ◽  
Cao Thanh Ta ◽  
Cuong Manh Chu ◽  
Hien Van Dinh
Keyword(s):  
Particle Size ◽  
High Pressure ◽  
Porous Structure ◽  
Process Parameters ◽  
Sponge Iron ◽  
Low Density ◽  
Pressing Pressure ◽  
Processing Parameter ◽  
High Quality ◽  
Optimal Processing

Sponge iron has been widely used for melting high-quality steels. However, there are several disadvantages of using sponge iron to melt steels, e.g boiling and furnace’s wall wearing strongly... which leads to a reduction in life duration of furnace due to its porous structure and low density. The solutions for overcoming these disadvantages are rising the density and reducing the purity of sponge iron by compacting particles of sponge iron to briquets in a high pressure and using a suitable binder. In this paper, the effects of pressing pressure, particle size, a fraction of binder and baking temperature on the density and strength of the sponge iron briquet using hydraulic machine were investigated. The process parameters range to obtain the sponge iron briquet with the density over 3.5 g/cm3 were found, and the optimal processing parameter range for maximizing the compacting strength of the sponge iron briquet was determined.

scholarly journals Physico-Chemical Properties of Sacha Inchi (Plukenetia volubilis L.) Seed Oil from Vietnam

2019 ◽  
Vol 32 (2) ◽  
pp. 335-338 ◽  
Author(s):  
Huynh Cang Mai ◽  
Duy Chinh Nguyen ◽  
Nguyen Phu Thuong Nhan ◽  
Long Giang Bach
Keyword(s):  
High Performance ◽  
Seed Oil ◽  
Essential Fatty Acids ◽  
Chemical Properties ◽  
Acid Value ◽  
Chemical Characteristics ◽  
Flame Ionization ◽  
Physico Chemical ◽  
Plukenetia Volubilis ◽  
Sacha Inchi

Sacha inchi (Plukenetia volubilis L.) seed oil was studied for physico-chemical characteristics and chemical composition. Through gas chromatography-flame ionization (GC-FID) process, the fatty acid composition in the oil was analyzed, revealing that the oil is rich in linoleic acid (42.62 %), linolenic acid (36.32 %) and oleic acid (11.64 %). The tocopherol level in the oil was also high (7.7 ± 0.005 mg/Kg), revealed by high-performance liquid chromatography/ultraviolet-visible detector (HPLC/UV-VIS). The physico-chemical properties of the oil were also examined, including viscosity (88-92 cP), acid value (2.05 ± 0.005 mg KOH/g), saponification content (183.5 ± 1.45 mg KOH/g) and iodine value (192.4 ± 1.55 g I2/100 g). The results also indicated that sacha inchi is a health beneficial oil due to the high contents of essential fatty acids (ω-3, ω-6 and ω-9).

scholarly journals Optimum Extraction Technology for the Seed Oil of Nigella sativa L.

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Changyang Ma ◽  
Cunyu Liu ◽  
Adel F. Ahmed ◽  
Yingying Niu ◽  
Wenyi Kang
Keyword(s):  
Particle Size ◽  
Linoleic Acid ◽  
Seed Oil ◽  
Nigella Sativa ◽  
Orthogonal Experiment ◽  
Extraction Yield ◽  
Extraction Rate ◽  
Extraction Time ◽  
Extraction Temperature ◽  
Extraction Technology

Seed oil of Nigella sativa L. is a popular edible oil in Egypt. How to improve the extraction efficiency of the oil will expand the use of the resource. In this paper, the four extraction factors, particle size of the seed, liquid-seed ratio, extraction time, and temperature, were optimized by the single-factor and orthogonal experiment to increase the extraction yield and linoleic acid concentration. The results showed that the twice extraction technology could increase the oil rate of 23.55% compared with the once extraction technology. The extraction rate of the once extraction could reach 33.51% under the conditions of liquid-seed ratio: 9 : 1 mL/g, extraction temperature: 35°C, extraction time: 1 h, and particle size: 60 meshes. The optimum twice extraction conditions with the extraction rate of 43.78% were 8 : 1 ml/g, 40°C, 1.5 h, and 60 meshes. Besides, the highest concentration of linoleic acid (58.09 mg/g) was twice extraction condition with 7 : 1 mL/g, 40°C, 2 h, and 60 meshes.

Physico-chemical characterisation of epoxy acrylate resin from jatropha seed oil

2017 ◽  
Vol 46 (6) ◽  
pp. 485-495 ◽  
Author(s):  
Emiliana Rose Jusoh Taib ◽  
Luqman Chuah Abdullah ◽  
Min Min Aung ◽  
Mahiran Basri ◽  
Mek Zah Salleh ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Seed Oil ◽  
Acid Value ◽  
Chemical Characteristics ◽  
Nuclear Magnetic Resonance Analysis ◽  
Epoxy Acrylate ◽  
Uv Curable ◽  
Content Type ◽  
Physico Chemical ◽  
Jatropha Seed

Purpose This paper aims to demonstrate the synthesis of polyesterification reaction of non-edible jatropha seed oil (JO) and acrylic acid, which leads to the production of acrylated epoxidised-based resin. To understand the physico-chemical characteristics when synthesis the JO-based epoxy acrylate, the effect of temperature on the reaction, concentration of acrylic acid and role of catalyst on reaction time and acid value were studied. Design/methodology/approach First, the double bond in JO was functionalised by epoxidation using the solvent-free performic method. The subsequent process was acrylation with acrylic acid using the base catalyst triethylamine and 4-methoxyphenol as an inhibitor respectively. The physico-chemical characteristics during the synthesis of the epoxy acrylate such as acid value was monitored and analysed. The formation of the epoxy and acrylate group was confirmed by a Fourier transform infrared spectroscopy spectra analysis and nuclear magnetic resonance analysis. Findings The optimum reaction condition was achieved at a ratio of epoxidised JO to acrylic acid of 1:1.5 and the reaction temperature of 110°C. This was indicated by the acid value reduction from 86 to 15 mg KOH/g sample at 6 hours. Practical implications The JO-based epoxy acrylate synthesised has a potential to be used in formulations the prepolymer resin for UV curable coating applications. The JO which is from natural resources and is sustainable raw materials that possible reduce the dependency on petroleum-based coating. Originality/value The epoxidised jatropha seed oil epoxy acrylate was synthesised, as a new type of oligomer resin that contains a reactive acrylate group, which can be alternative to petroleum-based coating and can used further in the formulation of the radiation curable coating.

Antioxidant Activity and Protective Effect against Oxidative Stress on Hippocampal HT22 Cells of Tea Seed Oil

2018 ◽  
Vol 24 (1) ◽  
pp. 53-59
Author(s):  
Jong Min Kim ◽  
Seon Kyeong Park ◽  
Jin Yong Kang ◽  
Seong-kyeong Bae ◽  
Ga-Hee Jeong ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Activity ◽  
Protective Effect ◽  
Seed Oil ◽  
Ht22 Cells ◽  
Tea Seed Oil

Physiochemical properties and antioxidant potential of Persea Americana seed oil

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Seed Oil ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Acid Value ◽  
Persea Americana ◽  
Antioxidant Potential ◽  
Physiochemical Properties ◽  
Physiochemical Parameters ◽  
Ic50 Value

Oil extracted from Persea Americana seed was assayed for its physiochemical properties and antioxidant potential using various standard methods. The oil content of the seed was found to be < 10%. Brownish-red color oil was liquid at room temperature, with specific gravity of 0.91±0.02 g/mL. Other physiochemical parameters determined were; acid value (4.51±0.08 mgKOH/g), %FFA (2.26±0.08), peroxide value (2.40±0.57 mgO2/Kg), ester value (31.26±0.03 mgKOH/g), saponification value (35.76±0.07 mgKOH/g) and iodine value (23.5±0.07). The results of the antioxidant activities of the seed oil showed that the flavonoid content (80.00±1.41 mgQE/g) was ~10 folds higher than the phenolic content (8.27±0.06 mgGAE/g). The DPPH radical scavenging value was found to be 51.54±0.25% with an IC50 value of 4.68±0.02 mg/mL and reducing power with an average absorbance of 0.85±0.01 and an IC50 value of 0.001±0.02 mg/mL. Gallic acid showed better antioxidant activities than the oil studied. The results obtained in this study showed that Persea Americana seed oil has nutritional, industrial as well as medicinal potentials.

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