폐지 용액화물로부터 성분분리 및 분석

장준복,양재경,임부국,이종윤 한국목재공학회 2004 목재공학 Vol.32 No.1

본 연구는 폐지로부터 용액화물을 제조하고, 제조된 용액화물의 성분 분리 및 성상분석을 통해 용액화물의 효율적인 이용방안을 위한 기초자료 제공에 그 연구 목적이 있다. 폐지의 액화에 있어 건식해리된 폐지보다 습식해리된 폐지의 액화가 비교적 용이하였으며, 이러한 이유는 습식해리된 폐지의 약품 침투가 비교적 용이하기 때문으로 판단된다. 폐지의 최적 액화조건은 폐지 1g에 대해 크레졸 2㎖, 물 4㎖, 인산 0.5㎖로 첨가하여 190℃에서 60분간 액화 시킨 조건이 가장 우수하였다. 폐지 액화물 중 리그닌은 용제인 크레졸 층으로, 탄수화물은 수층으로 용해되어 각각 분리되며, 두 성분의 분리·회수는 비교적 용이하였다. 액화 폐지 중의 리그닌은 80% 이상 회수되었고, 회수된 리그닌의 분자량은 1,000 정도의 저분자량을 나타냈었다. This research was carried out to investigate the component isolation method from liquefied waste paper. and isolated component was analyzed by molecular weight distribution with gel chromatography and nitrobenzene-oxidation analysis. In the aspect of liquefaction ratio, wet defibration fiber are better than dry defibration fiber because of wet defiberation fiber was easy to access of chemical solution. The optimal liquefaction condition of waste paper was treated at 190 C for 60 min(creso1 2 me, water 4 me, phosphoric acid 0.5 ㎖ based on waste paper 1 g). In the liquefied waste paper, lignin and carbohydrate were separated with two interfacial layer(creso1 layer, water layer). In the chemical analysis of isolated lignin, molecular weight distribution of isolated lignin was below 1,000.

Preparation of Insoluble Dietary Fiber from Forest Waste and Its Physiological Function in Rat Fed High Cholesterol Diets

Young-Mi Chai,Bu-Kug Lim,Jong-Yoon Lee,Soon-Jae Rhee 한국식품영양과학회 2002 Preventive Nutrition and Food Science Vol.7 No.1

This study investigated the production of insoluble dietary fiber using forest waste, the dietary effect of manufactured insoluble fiber on physiological function in rat fed high cholesterol diets. Insoluble dietary fiber was prepared from the wood chips of oak (Quercus mongolica). The best condition for steam-explosion treatment for the preparation of insoluble dietary fiber was 25 kg/㎤ pressure for 6 minutes. In the chemical analysis of insoluble dietary fiber pretreated by 1% sodium hydroxide solution with steam-exploded wood, α-cellulose content was 61.7% in the insoluble dietary fiber, which contained 7.6% residual lignin. In order to compare insoluble dietary fiber with commercial α-cellulose of physiological function, Sprague-Dawley male rats weighing 100±10 g were randomly assigned to one normal diet, five high cholesterol diet containing 1% cholesterol. The high cholesterol diet groups were classified as fiber free diet (FF group), 5% commercial α-cellulose diet (5C group), 10% commercial α-cellulose (10C group), 5% insoluble dietary fiber diet (5M group),, 10% insoluble dietary fiber (10M group). The rats were fed ad libidum for 4 weeks. Food intake, weights gain,, food efficiency ratio in high cholesterol groups were higher than those of normal group, but there were no significant differences between the experimental groups. There were not any significant differences in the weights of liver, kidney,, small intestine of insoluble dietary fiber supplemented groups, but weight of cecum in all insoluble dietary fiber group were significantly higher than those of FF group. A gastrointestinal transit time was decreased by supplementation of insoluble dietary fiber. Weight, water contents of feces in the insoluble dietary fiber supplemented groups were significantly higher than those of the FF group. There were not any significant differences in the activities of the glutamic pyruvic transaminase (GPT), glutamic oxaloacetic transaminase (GOT) between the experimental groups. In conclusion, the manufactured insoluble dietary fiber, commercial insoluble fiber have the same physiological effects. The preparation method of the insoluble dietary fiber from the oak chips suited its purpose.

The purification of ferulic acid from sweet potato (Ipomoea batatas) straw by partition extraction and column chromatography

( Ji Hyun Park ),( Bu Kug Lim ),( Myung Suk Choi ),( Jae Kyung Yang ) 韓國木材工學會 2006 한국목재공학회 학술발표논문집 Vol.2006 No.-

Extraction and Separation of Ferulic Acid from Lignocellulose

( Ji Hyun Park ),( Bu Kug Lim ),( Myung Suk Choi ),( Jae Kyung Yang ) 韓國木材工學會 2005 한국목재공학회 학술발표논문집 Vol.2005 No.-

Preparation of Insoluble Dietary Fiber from Forest Waste and Its Physiological Function in Rat Fed High Cholesterol Diets

Chai, Young-Mi,Lim, Bu-Kug,Lee, Jong-Yoon,Rhee, Soon-Jae The Korean Society of Food Science and Nutrition 2002 Preventive Nutrition and Food Science Vol.7 No.1

This study investigated the production of insoluble dietary fiber using forest waste and the dietary effect of manufactured insoluble fiber on physiological function in rat fed high cholesterol duets. Insoluble dietary fiber was prepared from the wood chips of oak (Quercus mongolica). The best condition for steam-explosion treatment for the preparation of insonuble dietary fiber was 25 kg/cm$^3$pressure for 6 minutes. In the chemical analysis of insoluble dietary fiber pretreated by 1% sodium hydroxide solution with steam-exploded wood, $\alpha$-cellulose content was 61.7% in the insoluble dietary fiber which contained 7.6% residual lignin. In order to compare insoluble dietary fiber with commercial $\alpha$-cellulose of physiological function, Sprague-Dawley male rats weighing 100$\pm$10 g were randomly assigned to one normal diet and five high cholesterol diet containing 1% cholesterol. The high cholesterol diet groups were classified as fiber free diet (FF group), 5% commercial $\alpha$-cellulose diet (5C group), 10% commercial $\alpha$-cellulose (l0C group), 5% insoluble dietary fiber dict (5M group), and 10% insoluble dietary fiber (10M group). The rats were fed ad libidum for 4 weeks. Food intake, weights gain, and food efficiency ratio in high cholesterol groups were higher than those of normal group, but there were no significant differences between the experimental groups. There were not any significant differences in the weights of livers, kidneys and small intestine of insoluble dietary fiber supplemented groups, but weight of cecum in all insolube dietary fiber group were significantly higher than those of FF group. A gstrointestinal transit time was decreased by supplementation of insoluble dietary fiber. Weight and water contents of feces in the insoluble dietary fiber supplemented groups were significantly higher than those of the FF group. There were not any significant differences in the activities of the glutamic pyruvic transaminase (GPT) and glutamic oxaloacetic transaminase (GOT) between the experimental groups. In conclusion, the manufactured insoluble dietary fiber and commercial insoluble fiber have the same physiological effects. The preparation method of the insoluble dietary fiber from the oak chips suited its purpose.

Chmical properties of cellulose phosphate manufactured from oak exploded wood

( Wang Ming Zhi ),( Bu Kug Lim ),( Jong Yoon Lee ) 韓國木材工學會 2005 한국목재공학회 학술발표논문집 Vol.2005 No.-

Extracts from Pinus densiflora Siebold et Zuccarini Sawdust Inhibit the Mycelial Growth of Lentinus edodes (Berk.) Sing., Edible Mushroom

Hong, Seong-Cheol,Choi, Myung-Suk,Lim, Bu-Kug,Lee, Jong-Yoon,Rinker, Danny L.,Yang, Jae-Kyung The Korean Society of Medicinal Crop Science 2004 韓國藥用作物學會誌 Vol.12 No.5

The extracts of Pinus densiflora sawdust by n hexane, ethyl acetate and methanol solvent were investigated to identify their mycelial growth inhibition against Lentinus edodes. The yields of n hexane soluble fraction, ethyl acetate-soluble fraction, and methanol soluble fraction from P. densiflora sawdust were obtained 1.36%, 2.21% and 4.03% using organic solvent, respectively. The mycelial growth inhibition of L. edodes was the greatest for n hexane extract, ranging from 36.5% to 47.6% at concentrations of 125 ppm to 1,000 ppm, with the values for all concentrations significantly different from one another. After direct extraction of P. densiflora sawdust using n hexane, ethyl acetate and methanol, each extract was separated into three fractions by silica gel column chromatography and then the fractions were isolated on the values of $R_f$ by thin layer chromatography. The mycelial growth inhibition against L. edodes was recognized in the fractions II (33.5%) and III (37.6%) of n hexane extract, the fraction II (21.4%) of ethyl acetate extract and the fraction II (26.4%) of methanol extract. The fractions III of n-hexane extract showed the highest growth inhibition among the nine fractions of the organic solvent extract.

Properties of Cellulose Acetate and Polyethylene Composite Film

Kweon-Hwan Hwang,Won-Hee Lee,Bu-Kug Lim 한국가구학회 2007 한국가구학회지 Vol.18 No.4

Environmentally-friendly polymer composite films were manufactured from cellulose acetate (CA) and polyethylene (PE). To investigate the optimum manufacturing conditions for the composite, various tests such as thermal analysis, surface observation, IR spectra analysis, and elongation ratio of polymer composite films were carried out. The mixing ratio of each element and manufacture condition was found to be very important for the best goods.

Utilization of Wastepaper as an Environmentally Friendly Slow-release Fertilizer and Its Effect on Growth of Radish Plant

Modabber Ahmed Khan,Kwang-Hwa Jeong,Bu-Kug Lim,Jong-Yoon Lee 한국폐기물자원순환학회 2013 한국폐기물자원순환학회 학술대회 Vol.2013 No.2

In order to raise awareness about environmental protection, people are paying more attention now-a-days in reusing wastepaper. As a result, most countries in the world have already made significant progress related to wastepaper recycling technology. The aim of this study was to investigate the effects of slow-release nitrogen fertilizer (SRNF) on the growth of radish plants. Wastepaper was deinked by alkaline solution and SRNF was produced from fertilizer impregnated wastepaper, which applied to an experimental plot compared with a urea fertilized plot. The plant height and total chlorophyll content of the radishes were higher while they were treated with SRNF than with urea. Some agronomic and chemical components were also observed and significant differences between the two fertilizers were found. When the soil was treated with SRNF, the pH, organic matter and total nitrogen content were higher than in the soil which was treated with urea.

Properties of Cellulose Acetate and Polyethylene Composite Film

Hwang, Kweon-Hwan,Lee, Won-Hee,Lim, Bu-Kug Korea Furniture Society 2007 한국가구학회지 Vol.18 No.4

Environmentally-friendly polymer composite films were manufactured from cellulose acetate (CA) and polyethylene (PE). To investigate the optimum manufacturing conditions for the composite, various tests such as thermal analysis, surface observation, IR spectra analysis, and elongation ratio of polymer composite films were carried out. The mixing ratio of each element and manufacture condition was found to be very important for the best goods.