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알로에 베라 겔 가공부산물로서의 섬유질 분획의 성분 및 물리화학적 특성
백진홍 ( Jin Hong Baek ),이신영 ( Shin Young Lee ) 한국산업식품공학회 2010 산업 식품공학 Vol.14 No.2
The fibrous material fraction as a by-product from the commercial aloe vera gel processing was obtained and freeze dried. The physicochemical characteristics such as the proximate composition, crystalline/surface structures and several physical functionalities including the water holding capacity (WHC), swelling capacity (SW), oil holding capacity (OHC), emulsion/foam properties and viscosity properties of this powdered sample (100 mesh) were investigated and analyzed by comparison with commercial α-cellulose as a reference sample. The total dietary fiber content of powdered sample was very high as much as 87.5%, and the insoluble dietary and soluble dietary fiber content ratios were 77.6 and 22.4%, respectively. The FT-IR spectrum of powdered sample showed a typical polysaccharide property and exhibited a x-ray diffraction pattern for cellulose Ⅲ and IV like structure. SW (8.24±0.15mL/g), WHC(6.40±0.19g water/g solid) and OHC(10.32±0.29g oil/g solid) of freeze dried aloe cellulose were about 3.3, 1.4 and 2 times higher than those of commercial α-cellulose, respectively. Aloe cellulose (~2%, w/v) alone had no foam capacity while improved the foam stability of protein solution (1% albumin+0.5% CaCl2) by factor of 300%. Emulsion capacity of 2%(w/v) aloe cellulose was about 70% level of 0.5%(w/v) xanthan gum, but its emulsion stability was about 1.2 times higher than that of xanthan gum. Also, aloe cellulose containing CMC (carboxyl methyl cellulose) of 0.3%(w/v) showed a very good dispersity. Aloe cellulose dispersion of above 1%(w/v) exhibited higher pseudoplasticity and concentration dependence than those of α-cellulose dispersion, indicating the viscosity properties for new potential usage such as an excellent thickening agent.
Aloe saponaria 캘러스의 열수 추출물 유래 다당의 특성
백진홍(Jin-Hong Baek),김명욱(Myung-Uk Kim),강태수(Tae-Su Kang),허원(Won Hur),이신영(Shin-Young Lee) 한국생물공학회 2009 KSBB Journal Vol.24 No.1
The callus formation from inferior leaf of Aloe saponaria was induced in M & S medium supplemented with 10-30 μM NAA (α-naphthalene acetic acid) and 3-7 μM kinetin under incubation in the dark at 25℃ for 6 weeks. The hot water extract (100℃, 24 hrs) from cultured callus was obtained and the components analysis for the extract were examined to determine the callus can synthesized the bioactive component such as Aloe polysaccharide. The freeze dried extract contained the sugar of 53.2%, protein of 7.3%, ash of 18.5% and water of 21% (w/w). Two fractions (Fr-I and Fr-II) were obtained by Sepharose CL-4B gel permeation chromatography and Fr-I, major fraction was further purified with dialysis. From sugar analysis by TLC and GC, the purified Fr-I fraction consisted of glucose (77.6%), galactose (17.7%), mannose (4.7%, w/w) and uronic acid (trace). The molecular weight of purified Fr-I fraction determined by GPC was about 110 kDa.
김성아 ( Sung A Kim ),백진홍 ( Jin Hong Baek ),이신영 ( Shin Young Lee ) 한국산업식품공학회 2009 산업 식품공학 Vol.13 No.1
The structural and physicochemical properties of dried aloe vera gel by DIS (dewatering impregnation soaking) process under optimum conditions were investigated. FT-IR spectra for dried samples of DIS aloes showed the typical patterns of standard aloe polysaccharide, and surface structures by SEM (scanning electron microscopy) were similar to a gel-like structure. In case of physicochemical properties of dried aloe samples by DIS process, solubilities and swelling powers of control (not osmotic treated aloe), DIS (S) and DIS (G), samples treated by osmotic solution of 60% sucrose/0.25% NaCl and 50% glucose/0.5% NaCl, were 48.3-57.3% and 8.3-11.7%, respectively, showing no significant differences among samples, but swelling power of DIS (PEG), sample treated by using 50% polyethylene glycol as an osmotic agent was about 5 times higher that of control. Also, water holding capacities of control, DIS (S) and DIS (G) were similar to each other, but that of DIS (PEG) was about 5 times higher that of control. Oil holding capacities of control and DIS aloes maintained the 50.9-86.4% levels of water holding capacities showing no significant differences among samples. Rehydration ratio of DIS (PEG) aloes were significantly dependent on the temperature of rehydrated solvent (water), and rehydration ratio of not-fileted aloe was about two folds higher than that of fileted aloe.
알로에 겔의 in vitro 생리기능 특성에 미치는 삼투탈수공정의 영향
김성아 ( Sung A Kim ),백진홍 ( Jin Hong Baek ),이신영 ( Shin Young Lee ) 한국산업식품공학회 2009 산업 식품공학 Vol.13 No.4
In vitro physiological functions such as jack bean (Canavalia ensiformis) urease inhibitory activity and retarding effect of glucose/bile acid of Aloe vera gel concentrated by the optimized DIS (Dewatering Impregnation & Soaking) process conditions were examined. Urease inhibitory activity of DIS aloes ranged from 84.6 to 94.4%, which was similar to or higher than 86.3% of fresh aloe. Also, urease inhibitory activity of DIS aloes was maintained at initial levels after heat treatment (90℃, 10 min.) and drying treatment (freeze or hot air drying). Urease inhibition pattern from Lineweaver-Burk plot indicated general non-competitive inhibition, and inhibition constants (K(IE) and K(IES)) of DIS aloes were 41-149 and 87-163 μL/mL, respectively. DIS(glucose) and DIS(polyethylene glycol) exhibited the highest retarding effect of glucose and bile acid. Their retarding effects were about 1.6 and 1.8 folds higher than that of fresh aloe after 0.5 and 1 hr of the dialysis, respectively. Conclusively, the above in vitro physiological functions of Aloe vera gel concentrated by DIS process suggested that aloe products treated with DIS would have the potential benefits for protection against Helicobacter pylori and reduction of blood glucose and cholesterol levels.
알로에 베라 유래 식이섬유의 In Vitro 및 In Vivo 생리기능 특성
이신영 ( Shin Young Lee ),이상한 ( Sang Han Lee ),허진철 ( Jin Chul Heo ),차태양 ( Tae Yang Cha ),백진홍 ( Jin Hong Baek ) 한국산업식품공학회 2010 산업 식품공학 Vol.14 No.2
A fiber fraction (Aloe cellulose), the by-product obtained from Aloe vera gel processing was freeze dried and investigated for in vitro glucose/ bile acid retarding effects of powdered sample (100 mesh) comparing with commercial α-cellulose as a reference sample. We also examined the effectiveness of physiological functionality such as the antiobesity and anti-constipation on Sprague-Dawley (SD) rat. The Aloe cellulose powders during in vitro dialysis experiment for 2 hours exhibited the glucose and bile acid retarding index of 20.32-35.2% and 53.13-28.30%, respectively. Especially, freeze dried aloe cellulose showed the 2.5 and 1.2-6 times higher effect on in vitro glucose and bile acid retardation than those of α-cellulose. These relatively good retarding effects on glucose and bile acid diffusion suggest a potential of preventing from diabetes and arteriosclerosis of some extent. Also, the results from animal experiments on SD rats fed a high-fat diet for 4 weeks suggested that Aloe cellulose might be used as a novel dietary fiber showing an effective anti-obesity and anti-constipation effect.
알로에 배지에서 재배한 표고버섯 추출물의 종양괴사인자로 유도된 유방암세포 MDA-MB231에 대한 전이 저해 활성
서석종(Seok-Jong Suh),김철호(Cheorl-Ho Kim),백진홍(Jin-Hong Baek),이경혜(Kyoung-Hae Lee),신동범(Dong-Bum Shin),박성수(Sung-Soo Park) 한국식품영양과학회 2015 한국식품영양과학회지 Vol.44 No.1
알로에를 첨가한 표고버섯 배양 추출물(ESA)의 항암효과를 검정하기 위하여 인간 유방암 세포주인 MDA-MB-231에 ESA를 처리하여 생육저해 활성과 세포 이동 억제 효과를 확인하였다. MDA-MB-231 세포에 ESA를 처리하여 72시간 후 관찰한 결과 약간의 생육저해 활성을 나타내었으며, 또한 transwell에서 TNF-α가 처리된 세포에 ESA를 처리해 본 결과 migration/invasion 정도를 상당히 저해함을 알 수 있었다. 이러한 세포 이동능의 저해 기작은 웨스턴 블럿 분석을 통해 확인해 본 결과 p-ERK 신호를 통해 일어나며, ICAM-1 단백질의 발현을 억제함으로써 나타나는 것을 알 수 있었다. 따라서 본 실험에서는 알로에 첨가 담자균 배양 추출물(ESA)은 인간 유방암세포에 대해 잠재적인 항암효과가 있음을 확인하였다. 이후 표고버섯 외 꽃송이버섯과 상황버섯에서의 알로에 배양액에 대한 항암효과에 대한 연구를 수행하고 있어 그 결과를 보고하고자 한다. To investigate the anti-cancer effect of shiitake mushrooms (Lentinus edodes) cultured in aloe-supplement, we treated extract of shiitake mushroom cultured in aloe-supplement (ESA) to MDA-MB-231 human breast cancer cells. ESA-treated MDA-MB-231 cells showed decreased growth rate in XTT assay. In addition migration/invasion was noticeably inhibited by ESA in TNF-α-treated MDA-MB-231 cells. Western blot analysis showed that the molecular mechanism of cell migration/invasion was mediated by reduced intercellular adhesion molecule-1 expression via p-ERK signal transduction pathways. We found ESA had inhibition activity against cellular growth and migration/invasion. Taken together, ESA has putative anti-cancer activity against human breast cancer.