• Title/Summary/Keyword: extraction yields

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Effects of Enzyme Treatments and Ultrasonification on Extraction Yields of Lipids and Protein from Soybean by Aqueous Process (Aqueous Process를 이용한 대두유와 대두단백의 추출중 효소와 초음파처리가 추출율에 미치는 영향)

  • Yoon, Suk-Hoo;Kim, In-Hwan;Kim, Seung-Ho;Kwon, Tai-Wan
    • Korean Journal of Food Science and Technology
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    • v.23 no.6
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    • pp.673-676
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    • 1991
  • Lipids and protein were extracted simultaneously from soybean flour by aqeous processing. Extraction yields of lipids and protein were 62 and 68%, respectively, when 120-150 mesh full-fat soybean flour was dispersed in six times of water (w/w) at $40^{\circ}C$ and pH 8. Supplementary treatment for the higher extraction yields such as proteolytic enzymes treatment improved extraction yields of lipids and protein up to 86 and 89%, respectively. Ultrasonification also improved extraction yields of lipids and protein up to 90%. Red and yellow colors of aqeous-extracted soybean oil were slightly darker than those of hexane-extracted oil, but were much lighter in colors than those of Folch-extracted oil.

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Extraction Yields of Ginseng Saponins in the Extracts of Crude Drug Preparations with Various Concentrations of Ethanol (생약복방제의 에탄을 농도별 엑스중 인삼 사포닌의 이행량 조사)

  • 최강주;고성룡
    • Journal of Ginseng Research
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    • v.15 no.3
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    • pp.192-196
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    • 1991
  • As a part of studios on the Quality control of index components in crude drug preparations, extraction yields of ginseng saponins from crude drug extracts were identified by TLC and quantified by HPLC. So-Shi-Ho-Tang(小柴胡湯), Sa-Kun-Ja-Tang(四君子湯), Yook-Kun-Ja-Tang(六君子湯) and In-sam-Tang(人蔘湯) were extracted with water, 30%-ethanol, 50%-ethanol, 80%-ethanol and absolute ethanol to analyze ginseng saponins in the crude drug extracts prepared with various concentrations of ethanol. Ginseng saponins were extracted considerably more from the extracts with higher concentrations of ethanol than those with water or lower concentrations of ethanol. Extraction yields of ginseng-side-Rb$_1$, -Rb$_2$ and -R$_c$ from four crude drug preparations were the lowest as 4.9~45.9%, 5.0~40.1, and 6.3~43.7% in water extract and the highest as 29.5~62.6%, 26.7~61.4% and 31.4~62.0% in absolute ethanol extract, compared with those of 80%-methanol extracts.

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Effects of Gamma Irradiation on Microbial Decontamination, Extraction Yields and Physiological Effectiveness of Korean Medicinal Plants (한방약재의 오염 미생물 살균, 추출율 및 생리효능에 대한 감마선 조사의 영향)

  • Yook, Hong-Sun;Cha, Bo-Sook;Jo, Sung-Kee;Byun, Myung-Woo
    • Korean Journal of Food Science and Technology
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    • v.30 no.3
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    • pp.581-589
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    • 1998
  • Effects of gamma irradiation on hygienic quality, extraction yields and physiological effectiveness in twenty-one kinds of Korean medicinal plants were investigated. Gamma irradiation at $5{\sim}10\;kGy$ eliminated the microorganisms contaminated in Korean medicinal plants. The total extraction yield in fifteen kinds of Korean medicinal plants increased by $5{\sim}25%$ at 10 kGy gamma irradiation. The physiological effectiveness such as antioxidation, anticomplement functions, nitrite scavenging and electron donating abilities of medicinal plants exposed to 10 kGy gamma irradiation were not different from that of the nonirradiated control.

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Antimicrobial Activity and Composition of Extract from Smilax china Root (청미래덩굴 뿌리에서 추출한 순차분획물의 항균활성과 성분 분석)

  • 박인호;송종호;권혁동;이원구
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.27 no.4
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    • pp.574-584
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    • 1998
  • Antimicrobial activities, extraction yields and chemical compositions of the extract from the powder of vacuum dried Smilax china root on various solvents were investigated. Antimicrobial activities against. A rhizogenes, A. tumefaciens, C. utilis, S. cerevisiae, B. megaterium, B. subtilis and E. coli were measured by disc diffusion method. Methanol, chloroform, ethylacetate and butanol extracts exhibited potent antimicrobial activities against B. megaterium and B. subtilis. Also, methanol, ethylacetate and butanol extracts had the activities against A. rhizogenes, and chloroform and ethylacetate extracts against A. tumefacciens. The extraction yields were 13.10%, 8.71%, 2.73%, 0.83%, 0.54% and chemical compositions of their extracts were very different according to the kinds of solvents. The main chemical groups of ethylacetate, methanol, chloroform and butanol extracts were 45.99% phenolics, 36.10% acids, 29.13% phenolics and 18.96% phenolics, respectively.

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Extraction Yields of Hizikia fusiforme by Solvents and Their Antimicrobial Effects (추출 용매에 따른 톳 추출물의 수율 및 항균성 검정)

  • KIM Soo-Hyun;LIM Sang-Bin;KO Young-Hwan;OH, Chang-Kyung;OH Myung-Cheol;PARK Che-Seok
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.27 no.5
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    • pp.462-468
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    • 1994
  • Extraction yields of Hizikia fusiforme with four kinds of solvents and $0{\sim}90\%$ ethanol solutions, and antimicrobial activities of the extracts against Escherichia coli, Bacillus subtilis, Saccharomyces cerevisiae and Alternaria sp. were investigated. Determination of extraction yield with several solvents showed the highest value, $33\%$ (wt/wt), when distilled water was used. However, the extraction yields by hexane, ethyl ether and ethanol were less than $1\%$ (wt/wt). When dried Hizikia fusiforme was extracted at various concentrations of ethanol, 0 to $50\%$ solution gave similar yields and the extraction yields decreased rapidly as the ethanol concentrations increased above $70\%$, Ethanol-extract demonstrated antimicrobial activities against E. coli and B. subtilis, and ethyl ether- and hexane-extracts against E. coli. 70 and $90\%$ ethanol-extracts had potent antimicrobial activities against E. coli, and B. subtilis.

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약모밀(Houttuynia cordata) 뿌리에서 추출한 순차분획물의 항균활성

  • Kim, Min-Ju;Song, Jong-Ho;Gwon, Hyeok-Dong;Son, Jeong-Eun;Park, In-Ho
    • 한국생물공학회:학술대회논문집
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    • pp.855-858
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    • 2001
  • Antimicrobial activities, extraction yields and chemical compositions of the extracts from the powder of vacuum dried Houttuynia cordata root on various solvents were investigated. Antimicrobial activity was investigated by disc diffusion method against several microorganisms, nine species of Gram positive and thirteen Gram negative bacteria. Ethanol, ethylacetate and butanol extracts exhibited potent antimicrobial activities against B. megaterium C. xerosis, S. aureus, S. epidermidis and E.coli. Chloroform and aqueous extracts from H. cordata showed weak antimicrobial activity against the tested bacteria. Ethylacetate and butanol extracts exhibited strong antimicrobial activity against the tested microorganisms. The extraction yields were 15.7%, 3.7%, 0.13%, 0.5% and 5.9% in ethanol, chloroform, ethylacetate, butanol and aqueous fractions, respectively. To further elucidate the effective components, solvent extracts was analyzed by GC/MSD.

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Extraction of Eu-152, Nd and Am-241 from the Simulated Liquid Wastes by Picolinamide$(C_8H_{17})$

  • Kwon, Seon-Gil;Lee, Eil-Hee;Yoo, Jae-Hyung;Park, Hyun-Soo;Kim, Jong-Seung
    • Nuclear Engineering and Technology
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    • v.31 no.5
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    • pp.498-505
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    • 1999
  • Trivalent actinide-lanthanide group separation is difficult to perform on an industrial scale, because of the many drawbacks of the available chemical process. In this paper, picolinamide(C$_{8}$H$_{17}$) is synthesized and characterized, and extraction yields of Am-241, Eu-152 and Nd are determined in batch extraction experiments. In particular, the influence of the solvent is described. The extraction yields of Am-241, Eu-152 and Nd depended on the LiNO$_3$ concentration, the picolinamide(C$_{8}$H$_{17}$) concentration and the acidity. A favorable picolinamide(C$_{8}$H$_{17}$) concentration was found to be about 2M. The appropriate nitric acid concentration and LiNO$_3$ concentration were confirmed to be about 0.125M and 3M, respectively. The separation factor of Am and Eu was about 9.9 at optimum conditions. The picolinamide(C$_{8}$H$_{17}$) is a very promising extractant for the actinide(III)-lanthanides(III) separation.aration.aration.

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Antioxidant Activities of Extracts from Different Parts of the Pine Tree (소나무 부위별 추출물의 항산화 활성)

  • Ryu, Beom-Seok;Choi, Hee-Eun;Choi, Won-Seok;Lee, Nan-Hee;Choi, Ung-Kyu
    • The Korean Journal of Food And Nutrition
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    • v.30 no.6
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    • pp.1133-1139
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    • 2017
  • This study was conducted to investigate the antioxidant activities of extracts from various parts of the pine tree, which is known as a good source of functional food material. While ethanol extraction yields of pine bud and cone were higher than water extraction yields of pine bud and cone, water extraction yield of pine needle was higher than ethanol extraction yield of the pine needle. The content of polyphenols in the pine cone ethanol extract was 5 times higher than that in the pine bud and needle. Further, the content of flavonoids in the pine cone ethanol extract was 8 times higher than that in the pine bud and needle. DPPH radical scavenging effect of the pine cone ethanol extract was 3~5 times higher that of the pine bud and needle extract. Regardless of the extraction solvents, trolox equivalent antioxidant capacity (TEAC) and ferric reducing antioxidant power (FRAP) of the pine cone were stronger than those of the other parts of the pine tree. Taken together, it can be expected that the pine cone can be practically used as an antioxidant substance in food and beauty industries.

[Retracted] Optimization of Jirisan Mountain Cudrania tricuspidata leaf substance extraction across solvents and temperatures

  • Kim, Yong Ju
    • Journal of Pharmacopuncture
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    • v.21 no.2
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    • pp.48-60
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    • 2018
  • Objective: The aim of this study is to optimize the extraction of beneficial substance from Cudrania tricuspidata leaves grown at Jirisan Mountain in South Korea by three different solvents depending on extraction time and at different temperature. Methods: The total phenolic contents were determined by the method reported by $S{\acute{a}}nchez$-Moreno et al. The total flavonoid contents were analyzed by Slinkard and Singleton. The DPPH radical scavenging activity was determined according to the method reported by Blois Results: The extraction yield for each solvent is 9.05-14.1%, 2.17-5.67%, and 2.3-3.9% for D.W., ethanol, and hexane, respectively. The overall results were maximized for the extract obtained with D.W. for 5 min at $100^{\circ}C$. The average phenol contents were 77.11, 45.64, and 0.343 mg/g at $100^{\circ}C$ in water, $78^{\circ}C$ in ethanol, and $68^{\circ}C$ in hexane, respectively. The flavonoid contents were the highest in the materials extracted with D.W., and were increased with increasing temperature, regardless of the extraction solvents, whether water (green), polar organic ethanol, or nonpolar organic hexane. In the ethanol extract, the flavonoid contents are increased gradually from 5.66 mg/g to 7.73 mg/g. The total flavonoid contents were proportional to the concentrations of the water extracts, ranging from 4.14 mg/g to 48.89 mg/g. The antioxidative activities of the water-extracted compounds are generally increased with increasing temperature from 42.5% to 85.5%. Those of the hexane extracts are increased slowly from 3.79% to 8.8%, while those of ethanol extracts are increased from 29.8% to 47.4%. Conclusion: The extraction yields were dependent upon solvents for extraction as well as extraction time and the temperature. The optimal extraction time was 5 min and the extraction yields were increased with increasing temperature excepted hexane. Of the three tested extraction solvents, the greenest solvent of water shows excellent results, suggesting that water is among the most effective solvents for natural sample extractions for general medicinal, pharmaceutical, and food applications.