• Title/Summary/Keyword: 추출액 재사용

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A Study on the Optimal Phosphorus Recovery Conditions from Sewage Sludge Ash by pH Control and Reuse of Extracts (하수슬러지 소각재 추출액의 pH 조절 및 재사용에 따른 최적의 인(P) 회수 조건 산정 연구)

  • Liu, Qi;Lim, Sung Hyun;Yoon, Seok-Pyo
    • Journal of the Korea Organic Resources Recycling Association
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    • v.28 no.3
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    • pp.15-26
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    • 2020
  • To recover phosphorus from incinerated sewage sludge ash(ISSA), ISSA were extracted with sulfuric acid solution, and the optimal phosphorus recovery conditions were experimented by comparing the recovered phosphorus contents and heavy metals by raising pH. Also the phosphorus recovery efficiency was compared when acid extract was reused or classified by particle size of ISSA. The optimal conditions for recovering phosphorus from ISSA were 1N sulfuric acid solution with an L/S ratio of 10, and an extraction time of 30 minutes. Considering the addition of alkali substances and the content of heavy metals in the recovered sediment, it is concluded to recover phosphorus under pH 5. Reuse of the ISSA extract increased the recovery rate of phosphorus by 14~21% depending on the reuse rate (100 and 50%), but it also increased zinc contents to 33 and 21%, and copper contents to 35 and 20%, respectively. The experiment of ISSA divided into four sections by particle size showed that there was no distinct advantage of phosphorous recovery by classification of certain particle size of ISSA. The removal of heavy metals from extracts through EDTA and cation exchange resin showed no definite effect.

Screeing of Tyrosinase Inhibitors from Oriental Herbs (한약재로부터 Tyrosinase 저해제의 탐색)

  • 서승염
    • Korean Journal of Plant Resources
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    • v.14 no.1
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    • pp.32-37
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    • 2001
  • Mammalian tyrosinase plays an important role in the process of melanin polymer biosynthesis by catalyzing the hydroxylation of tyrosine to 3,4-dihydroxyphenylalanine(DOPA) and the oxidation of DOPA to dopaquinone. These processes are major determinant of human skin color and involved in localized hyperpigmentation. Therefore, the enzyme inhibitors have been of great concern as skin-whitening cosmetics. Methanol extracts of 174 oriental herbs were screened for the mushroom tyrosinase inhibitory activity.

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Recovery of Calcium Phosphate from Sewage Sludge Ash (하수슬러지 소각재로부터 Ca-P 형태의 인 회수)

  • Jung, Jinmo;Yoon, Seok-Pyo
    • Journal of the Korea Organic Resources Recycling Association
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    • v.26 no.1
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    • pp.29-37
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    • 2018
  • In this study, optimum extraction conditions for phosphorus recovery from sewage sludge ash(SSA) were investigated. For this purpose, an experiment was conducted to determine optimal recovery conditions for Ca-P type phosphorus by using calcium component in the recycled aggregate residue. The phosphorus content of sewage sludge ash was confirmed to be 5.0 %. When $H_2SO_4$ was used as an extract, concentration of 1 N $H_2SO_4$, L/S ratio of 10, and extraction time of 30 min were found to be the optimal extraction conditions. Phosphorus was extracted by using optimal extraction conditions, and then the heavy metals eluted with phosphorus were removed using 1~20 g of cation exchange resin. In 20 g of cation exchange resin, Fe 71.3%, Cu 82.4%, Zn 79.9%, and Cr 15% were removed. After that, the mixing ratio of the calcium extract obtained from the recycled aggregate residue (RAR) was changed to 1:1, 1:5, 1:10. The pH of the SSA to RAR mixture was adjusted to 2, 4, 8 and 12 by the addition of 5 N NaOH to the mixture of 1:5, and the phosphorus was recovered as Ca-P type precipitate. The optimum pH was 8. When recycled aggregate residues were used, the weight of calcium phosphate increased, but the amount of wastewater generated also increased. Therefore, it was concluded that the use of recycled aggregate residue was not economically feasible.

Effect of water extract and distillate from the mixture of black goat meat and medicinal herb on osteoblast proliferation and osteoclast formation (흑염소와 약용식물 복합 증탕추출액 및 증류액이 조골세포 증식과 파골세포 형성에 미치는 영향)

  • Song, Hyo-Nam;Leem, Kang-Hyun;Kwun, In-Sook
    • Journal of Nutrition and Health
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    • v.48 no.2
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    • pp.157-166
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    • 2015
  • Purpose: The effects of water extract and distillate from the mixture of black goat meat and medicinal herb on MG-63 osteoblast proliferation and mouse bone marrow derived osteoclast formation were investigated. Methods: Proximate composition, volatile basic nitrogen (VBN), mineral content, free amino acid composition and free fatty acid composition in black goat meat were determined. Water extract and distillate were prepared with three groups; goat meat only (BG-E, BG-D), six herbs added group (BG-E6, BG-D6), and eight herbs added group (BG-E8, BG-D8). Osteoblast proliferation, mineralization and calcium uptake activity of MG-63 cells were measured and tartrate resistant acid phosphatase activity of osteoclasts was analyzed. Results: Black goat meat had remarkably low fat and high level of calcium. Glutamic acid was the most abundant amino acid. Herbs added extract groups (BG-E6 and BG-E8) showed increased MG-63 cell proliferation in a concentration dependent manner, while all the distillates did not show the effect. All extracts and distillates showed significantly increased osteoblast mineralization depending on the concentration. In particular, herb added extract, BG-E6, increased 170.3% of control and the distillate of BG-D and BG-D6 increased up to 168.5% and 159.8%, respectively. Calcium uptake activities of all water extracts showed remarkable increase of BG-E6 and BG-E8 up to 615.5% and 628.1% of control, respectively. Ditillates had no effect except BG-D6. All water extracts significantly reduced the activity of tartrate-resistant acid phosphatase (TRAP) in osteoclasts derived from mouse bone marrow. Conclusion: Combination of black goat meat and medicinal herb increased the MG-63 cell proliferation and effectively inhibited osteoclast differentiation in both water extracts and distillate of them, which implies that they could be used as potent functional food materials for bone health.

Tyrosinase Inhibition Activity and Antioxidant Capacity by Fermented Products of Some Medicinal Plants (한방 생약재 발효액의 항산화 활성 및 tyrosinase 저해 활성)

  • Cha, Jae-Young;Yang, Hyun-Ju;Jeong, Jae-Jun;Seo, Won-Seok;Park, Jun-Seok;Ok, Min;Cho, Young-Su
    • Journal of Life Science
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    • v.20 no.6
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    • pp.940-947
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    • 2010
  • The effects of fermented products from 40 medicinal herbals commonly available in Korea were examined according to concentrations of polyphenolic compound and kojic acid, and the activities of DPPH ($\alpha,\alpha$'-diphenyl-$\beta$-picrylhydrazyl) free radical scavenging and tyrosinase. The polyphenolic compound concentrations were 0.24 by Corydalis turtschaminovill ~ 11.42% (dry matter basis) by Syringa velutina in the extracts and 0.18 by Poria cocos ~ 12.27% by S. velutina in the fermented products. Kojic acid concentrations were 0.02 by Poria cocos Sclerotium ~ 9.67 mM by S. velutina in the extracts and 0.33 by P. cocos ~ 10.32 mM by S. velutina in the fermented products. Syringa velutina contained the highest polyphenolic compound and kojic acid concentrations, which were higher in the fermented product than in the extract. Higher DPPH free radical scavenging activity (>60%) was observed in the extracts of A. sessiliflorum, Citrus nobillis, and Angelica gigas and the fermented product of A. sessiliflorum compared to the other medicinal plants. Higher tyrosinase inhibition activity (>50%) was observed in the extracts of Morus alba, Glycyrrhiza glabra, and Rubus coreanus and the fermented products of G. glabra, Cnidium officinale, and S. velutina. Based on the above results, G. glabra, C. officinale, and S. velutina possessed high tyrosinase-inhibitive activities and kojic acid concentrations, which could be definitely enhanced by the fermentation of Phenillus linteus mycelium.

The Content of Amino Acids and Anti-inflammatory Effect of Lentinula edodes Syrup by Different Malt Concentrations (맥아 첨가비율을 달리한 표고당화액의 세포독성, 항염증효과 및 아미노산 함량)

  • Ha, Neul-I;Bak, Ok Ran;Kim, Kyung Je;Jin, Seong Woo;Koh, Young Woo;Im, Seung Bin;Jeong, Hee Gyeong;Seo, Kyoungsun
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2019.04a
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    • pp.104-104
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    • 2019
  • 표고(Lentinula edodes)에 다량 함유되어 있는 아미노산은 면역효과와 밀접한 관련이 있는 것으로 알려져 있다. 표고 특유의 향미에 대한 소비자들의 선호도가 상이하여, 표고를 맥아로 당화하여 소비자들의 섭취 편이성을 향상시키고, 아미노산을 포함한 당화액을 제조하여 면역효과가 증강된 제품을 개발하고자 본 연구를 수행하였다. 또한 버섯류를 비롯한 담자균류에는 다양한 약효성분이 함유되어 있어 민간에서도 자주 사용된 기록이 있다. 최근 고등담자균류인 버섯의 성분 및 유용성에 관심이 크게 증가하고 있는 추세이며, 이에 따라 버섯류에 대한 식품학적 및 약리학적 측면에서 연구가 활발히 진행되고 있다. 표고(L.edodes)와 당화효소로 사용한 맥아의 비율에 따라 A (표고 1 kg : 맥아 50 g), B (표고 1 kg : 맥아 100 g), C (표고 1 kg : 맥아 200 g), D (표고 1 kg : 맥아 300 g), E (표고 1 kg : 맥아 300 g) 5개의 시험구를 설정하였으며, 제조된 표고당화액을 농축 후 동결건조 하여 분말로 분쇄 후 시료로 사용하였다. 표고당화액의 면역효과를 검증하고자, Raw 264.7에 표고당화추출분말 A, B, C, D, E를 각각 10, 50, 100 및 $500{\mu}g/mL$의 농도로 처리하여 각 시료에 대한 세포 독성과 항염증효과를 확인하였다. 세포독성 시험결과, E 시험구의 경우 $100{\mu}g/mL$의 농도에서 75.3%, $500{\mu}g/mL$의 농도에서 66.3%의 세포생존율을 나타내 독성을 보였다. 또한 A, B, D를 각각 $500{\mu}g/mL$의 농도로 처리 했을 때, 94.1%, 83.1%, 80.2%의 NO 생성율을 나타내어 E 시험구를 제외하고는 세포독성이 없는 것으로 확인되었다. 표고당화추출분말의 구성아미노산 함량은 C 시험구에서 19,699.01 mg%로 가장 높게 나타났으며, A 시험구에서 17,231.14 mg%, B 시험구에서 17,152.38 mg%순으로 높게 나타났다. E 시험구에서 13,367.98 mg%로 가장 낮게 나타났다. 모든 표고당화추출분말에서 총 16종의 유리아미노산 이 검출 되었으며, C 시험구에서 2,562.06 mg%로 가장 높게 나타났고, B 시험구에서 2,243.16 mg%, D 시험구에서 1,895.29 mg%, A 시험구에서 1,672.82 mg%순으로 높게 나타났다.

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Recovery of Gallium from Steelmaking Dust (제강더스트로부터 갈륨의 회수)

  • 양종규;이성식;김종화;황영길
    • Resources Recycling
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    • v.2 no.4
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    • pp.27-32
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    • 1993
  • A process has been studied to recover gallium from steelmaking dust which had several hundreds ppm of gallium. Aqueous solution containing 38 mg/l gallium was obtained by leaching of dust with 2.25 mol/l sulfuric acid. The leach liquor contained iron and zinc about 1,000 times greater than gallium. Gallium was then concentrated by ion exchanger of chelating resin with functional group of amino carboxylic acid after reduction of ferric ion to ferrous ion and pH adjustment. Gallium was concentrated to be 13 g/l in the resulting eluate by double ion exchanges. The liquor was further treated to remove impurities by solvent extraction technique empolying TOMAC as extractant. The galluim with 99% purity was finally obtainable.

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Concentration of Pigment Extracted from Purple Sweet Potato by Nanofiltration (막분리에 의한 자색고구마 색소의 농축)

  • Kim, Seon-Jae;Rhim, Jong-Whan
    • Korean Journal of Food Science and Technology
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    • v.29 no.3
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    • pp.492-496
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    • 1997
  • Purple sweet potato pigment extract was concentrated using both membrane separation method and vacuum concentration method. The pigment extract (anthocyanin content 1.6 g/L) was concentrated $({\times}25)$ after 5 hr of continuous operation of a nanofiltration to get anthocyanin content of 10.6 g/L. Total solid content also increased continuously while the flux decreased continuously during the concentration process. Degradation index (DI) changes of concentrated pigment solution were insignificant during the whole concentration process which is indicating that the nanofiltration method does not affect color degradation of anthocyanin pigment. For the comparison test, the same pigment extract was concentrated using a rotary vacuum evaporator at temperatures of 40 and $60^{\circ}C$. At both temperatures, pigment content increased in a similar manner during concentration $({\times}5)$. However, DI value at $60^{\circ}C$ increased while that at $40^{\circ}C$ did not change appreciably. Total color difference value changed only slightly by nanofiltration and $40^{\circ}C$ while changed significantly by $60^{\circ}C$. These indicate that a membrane filtration method is more effective in concentrating purple sweet potato pigment extract than a vacuum concentration method by high temperature.

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A study on the optimization of Ion Exchange Resin operating conditions for removal of KCl from CKD extract (CKD 추출액내 KCl 제거를 위한 이온교환수지 조업조건 최적화 연구)

  • Jang, Younghee;Lee, Ye Hwan;Kim, Jiyu;Park, Il Gun;Lee, Ju-Yeol;Park, Byung Hyun;Kim, Seong-Cheol;Lee, Sang Moon;Kim, Sung Su
    • Journal of the Korean Applied Science and Technology
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    • v.36 no.4
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    • pp.1088-1095
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    • 2019
  • The CKD extract is wastewater from which KCl in CKD has been removed to reuse CKD as a cement raw material, and tried to reuse no extracts due to problems such as wastewater treatment facility expansion. As a result of removing KCl by the ion exchange method, the pH of the extract after ion exchange decreased from 12.7 to less than pH 2, and it was confirmed that H+ of the cation exchange resin was dissolved in the extract through ion exchange. In addition, the selectivity of the ion exchange was removed in the order of Ca2+, K+, it was determined that the increase in the contact time to remove the K+ ions. The batch system had a contact time of 6 times or more, compared to the continuous system, and showed 4 times of K+ removal efficiency and 7 times of Cl- removal efficiency. It was showed by analyzing the pH of the extract that more H+ of the cation exchange resin was extracted than OH- of anion exchange resin as the pH of the extract was changed.

Evaluating the Application of Natural Pesticides on Textile Materials of Organic Cultural Heritages (섬유 재질에 대한 천연 살충·살균제의 적용성 평가)

  • Kim, Young-Hee;Hong, Jin-Young;Jung, Mi-Hwa;Jo, Chang-Wook;Kim, Soo-Ji;Lee, Jeung-Min;Choi, Jung-Eun
    • 보존과학연구
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    • s.32
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    • pp.25-35
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    • 2011
  • Wood vinegar and Asarum sieboldii Miquel were selected as candidate materials showed antimicrobial activity and insect repellent activity. These natural pesticides have its own color and these could cause color difference on fabric materials. In the present study, we investigated the color difference of undyed and dyed fabrics to evaluate negative effect of wood vinegar and A. sieboldii Miquel. Undyed and dyed fabrics were exposed to natural pesticides of various concentrations for six months in relative humidity 70% and temperature $28^{\circ}C$. After exposure of pesticides, color difference (${\Delta}E*$) were investigated at two weeks intervals for six months. As a results, dyed cotton, silk and undyed silk fabrics exposed wood vinegar were not nearly changed in their colors, but color of only undyed cotton fabric was clearly changed by wood vinegar. Especially color difference by wood vinegar on undyed cotton fabric was most distinct as the concentration increased. On the other hand, all of fabrics exposed A. sieboldii Miquel were not nearly changed in their colors for six months. Therefore, this study first suggests that wood vinegar and A. sieboldii Miquel as natural insecticides could be used to conserve for textile cultural properties from insects and microorganism, but wood vinegar couldn't use the high concentration on undyed cotton fabric.

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