• Applied Biological Chemistry
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• 제42권1호
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• pp.63-67
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• 1999

NaCl의 농도에 따른 Listeria monocytogenes의 증식속도와 세포내 축적되는 삼투보호물질의 농도를 측정하였다. 삼투압스트레스를 받은 L. monocytogenes는 삼투보호물질인 glycine betaine과 glutamate를 세포내에 축적하였는데, NaCl의 첨가수준이 4%까지 증가함에 따라 축적되는 glycine betaine과 glutamate의 양도 증가하여 각각 685, 345 nmol/mg protein이 세포내에 축적되었다. L. monocytogenes를 효과적으로 제어하기 위해서 NaCl과 상엽추출물을 병용하여 항균효과를 시험하였다. NaCl 2%와 상엽추출물 100 ppm을 TSB에 첨가하여 배양했을 경우 무첨가군에 비해 약 10배 정도의 균수가 저해되었으며, NaCl 2%와 상엽추출물 500 ppm의 경우는 약 $10^5$배, NaCl 2%와 상엽추출물 1,000 ppm의 경우는 약 $10^8$배 정도의 균수가 감소되어 상엽추출물과 NaCl을 병용하면 단독 사용시 보다 뚜렷한 증식저해효과를 보여 주었다.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2018년도 춘계학술발표회
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• pp.63-63
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• 2018

본 연구에서는 80% 식물성 알코올을 추출 용매로 사용해 오디를 빛을 차단 후 실온에서 3일 간 추출하였다. 3회 여과한 후 최소 온도($40{\sim}60^{\circ}C$)에서 농축한 뒤 동결 건조하여 파우더 형태로 사용하였다. 오디(Morus alba)의 에탄올 추출물은 B16/F10 세포의 항산화 및 멜라닌 합성 억제 효과를 나타내었다. 멜라닌 함량과 세포 내 tyrosinase 활성을 Western blotting으로 측정 하였다. Tyrosinase와 tyrosinase-related protein (TRP) -1은 tyrosinase-related protein (TRP) -2보다 강력하게 억제되었으며, 이들 결과는 tyrosinase와 TRP-1은 흑갈색을 띠는 eumelanin의 생합성의 억제와 강한 상관관계가 있음을 보여 주었다. ${\alpha}$-melanocyte-stimulating hormone (${\alpha}$-MSH) 처리 한 B16/F10 흑색 종 세포에서 M. alba 에탄올 추출물은 멜라닌 생성 연관 단백질의 발현 및 멜라닌 생성이 용량 의존적으로 억제 하였다. 멜라닌 함량과 세포 내 tyrosinase 활성을 Western blotting으로 측정 하였다. 또한 DPPH와 SOD를 사용하여 항산화 활성을 분석하였고 총 폴리 페놀과 총 플라보노이드 함량을 측정 하였다. MTT assay 분석을 사용하여 M. alba 에탄올 추출물의 세포 독성을 측정 하였다. B16/F10 멜라닌 생성 세포의 tyrosinase 저해 활성 및 사멸 효과가 일반적으로 효과적이었다. 따라서 M. alba 에탄올 추출물은 항산화 및 미백 효과를 나타내며, 기능성 화장품의 천연 성분으로서 우수한 것으로 여겨진다.

• Journal of Applied Biological Chemistry
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• 제58권2호
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• pp.153-155
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• 2015

뽕나무(Morus alba L.) 뿌리껍질을 실온에서 80% MeOH 수용액으로 추출하고 이 추출물을 EtOAC, n-BuOH, 그리고 $H_2O$ 분획으로 나누었다. EtOAc 및 n-BuOH 분획에 대하여 silica gel, ODS 및 Sephadex LH-20 column chromatography를 반복 실시하여 4종의 phenolic 화합물을 분리, 정제하였다. NMR, IR, 및 EI/MS 등을 해석하여, norartocarpanone (1), 2',4',7-trihydroxy-(2S)-flavanone (2), methyl-${\beta}$-resorcylate (3), 그리고 (Z)-oxyresveratrol-4-O-${\beta}$-$\small{D}$-glucopyranoside (4)로 각각 구조동정하였다. 화합물 (Z)-oxyresveratrol-4-O-${\beta}$-$\small{D}$-glucopyranoside (4)는 상백피로부터는 이번 실험에서 처음으로 분리되었다.

• 대한한의학방제학회지
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• 제21권1호
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• pp.36-50
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• 2013

Objectives : To clarify the possible effect of Lycium chinese Mill (LC)., Morus alba L (MA)., and Lycium chinese Mill. +Morus alba L. (LC+MA), we have examined their influence on the development of pulmonary eosinophilic inflammation in the asthmatic murine model. Methods : Female Balb/c mice (5weeks) were immunized on two different days (21 days and 7 days before inhalational exposure) by intraperitonial injections of 0.2ml alum-precipitated Ag containing $100{\mu}g$ of OVA bound to 4 mg of aluminum hydroxide in PBS. Seven days after the second sensitization, mice were exposed to aerosolized ovalbumin for 30 minutes/day on 3 days/week for 8 weeks (at a flow rate of 250 L/min, 2.5% ovalbumin in normal saline) and, LC, MA, and LC+MA (500 mg/kg) were orally administered 3 times per a week for 8 weeks. Results : The suppressive effect of LC, MA, and LC+MA were demonstrated by the accumulation of eosinophills into airways, with the reduction of eosinophil, total lung leukocytes numbers. These were correlated with the marked reduction of IL-5, IL-13 and IL-4 levels in the BALF and serum. OVA-specific IgE levels were also decreased in serum and BAL from these mice. LC, MA, and LC+MA decreased eosinophil CCR3 expression and CD11b expression in lung cells. Conclusions : These results indicate that LC, MA, and LC+MA have high inhibitory effects on airway inflammation and hyper-responsiveness in the asthmatic murine model. The suppression of IL-5, IgE, eosinophil CCR3 expression and CD11b expression, and the increase of IFN-${\gamma}$ production in BALF seem to contribute to this effect. Hence, the results indicated that LC, MA, and LC+MA could act as a immuno-modulator which possesses anti-inflammatory and anti-asthmatic property by modulating the imbalance between Th1 and Th2 cytokines.

• 생명과학회지
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• 제10권4호
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• pp.354-361
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• 2000

The effect of mulberry (Morus alba L.) leaf extract(MLE) on oxidative stress and membrane fluidity in brain membranes of SD rats fed with 100 and 300 mg/kg BW/day were carried out for 6 weeks. Cholesterol accumulations resulted in a consistent decreases (4.6% and 5.6%, respectively) in brain mitochondria and microsomes of MLE-300 group compared with control group. Membrane fluidities were dose-dependently increased (2.2% and 5.1%, 5.0% and 15.2%) in brain mitochondria and microsomes of MLE-100 and MLE-300 groups compared with control group. Basal oxygen radicals(BORs) in brain mitochondria and microsomes were significantly inhibited (15.7% and 25.1%, 9.0% and 12.4%, respectively) by MLE-100 and MLE-300 groups compared with control group. Induced oxygen radicals(IORs) in brain mitochondria and microsomes were significantly inhibited (8.9% and 13.1%, 16.5% and 23.2%, respectively) by MLE-100 and MLE-300 groups compared with control group. Lipid peroxide (LPO) levels were significantly decreased (8.5% and 18.1%, 7.6% and 12.3%) in brain mitochondria and microsomes of MLE-100 and MLE-300 groups compared with control group. Oxidized protein (OP) levels were dose-dependently decreased (4.3% and 14.2%, 10.0% and 10.9%, respectively) in brain microsomes of MLE-100 and MLE-300 groups compared with control group. These results suggest that MLE may play an effective role in an attenuating an oxidative stress and increasing a membrane fluidity in brain membranes.

• Asian-Australasian Journal of Animal Sciences
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• 제17권6호
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• pp.777-783
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• 2004

Samples of 13 species of forest tree leaves fed to livestock in the semi-hilly arid zone of Punjab State in India were collected at 30 d interval for 12 months, in order to assess their nutritional worth for livestock. The ground samples were pooled for 4 different seasons viz. dry hot, hot humid, fall and winter. The chemical composition irrespective of the season revealed that CP content varied between 8.9 (Carrisa) to 22.0% (Leucaena). Globulin was the major protein fraction in most of the leaves. The lowest concentration of cell wall constituents was observed in Morus alba and Grewea. The leaves in general became fiberous and lignified during winter and fall as compared to summer season. The leaves of Grewea, Morus alba, Leucaena, Carrisa and Acacia were rich in Ca, P and most of the trace elements. The total phenolics ranged between 1.88% (Azardirachta) to 15.82% (Acacia). The leaves of Acacia had the highest concentration of hydrolysable tannins (14.6%) whereas that of Carrisa had that of condensed tannins (5.9%). The condensed tannins (more than 3%) were negatively correlated to the digestibility of dry matter (DM), neutral detergent fiber (NDF) and crude protein (CP). The digestion kinetic parameters for DM, NDF and CP revealed that leaves of Morus alba, Zizyphus and Ehretia had highest insoluble but potentially degradable fraction. The minimum rumen fill values also revealed that leaves of Grewea, Azardirachta, Morus, Ehretia and Leucaena had great potential for voluntary DM intake. The leaves of Ougeinia, Malha, Dodenia and Carrisa had significantly higher rumen fill value indicating poor potential for voluntary DM intake. Season did not have any significant impact on digestion kinetic parameters except that most of the leaves had low potentially degradable fraction, which was degraded at slow rate during winter. It was concluded that the leaves of Morus, Ehretia, Grewea and Leucaena had great potential as livestock feed, while feeding of Ougeinia, Malha and Dodonea leaves should be avoided.

• Journal of Applied Biological Chemistry
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• 제58권1호
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• pp.51-54
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• 2015

오디에서 분리한 flavonoid가 zebrafish에 alloxan을 처리하여 손상된 췌장섬을 어느 정도 회복 시키는지 검토하였다. Zebrafish의 배아에 alloxan을 처리하면 확실하게 췌장섬의 크기가 감소하였다(p <0.001). Rutin, isoquercetin 및 quercetin의 처리에 의해 췌장섬의 크기가 유의적으로 증가하였으며(p <0.001), 형광세포의 fluorescence intensity도 뚜렷하게 증가하였다.

• 한국식생활문화학회지
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• 제20권1호
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• pp.123-129
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• 2005

The purpose of this study was to investigate the effect of dietary Morus alba L.(Bong-ip, B), Glycyrrhizae glabra(Gam-chei, C), Pinus densiflora(Sol-lp, S) and Angelica gigas(Dang-gi, D)powder on serum composition in rats(Sprague-Dawley male rats, 100-110g). Serum TG(triglyceride, p<0.01), total cholesterol, glucose, total protein, albumin, GGT$({\gamma}-glutamyl$ transferase, p<0.05) were significantly increased D group than that of nomal and other groups, but UA(uric acid, p<0.05) was significantly decreased, and C group(p<0.05) was significantly increased. but C group of urine(p<0.05) was significantly decreased. Also, B and S groups(p<0.05) of BUN(blood urea nitrogen), S group(p<0.05) of ALP(alkaline phosphokinase, Band C(p<0.05) of CPK(creatinine phosphokinsae, p<0.05) were significantly increased. B, S and C groups were better than D group for lipid metabolism, and pretection to liver. Also, B and C groups of glucose were same as normal diet, so Morus alba L. was good food for lipid metabolism and hypoglycemic effect.

• Journal of Applied Biological Chemistry
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• 제60권2호
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• pp.109-111
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• 2017

The root bark of Morus alba L. were extracted with 80% aqueous MeOH, and the concentrated extract was partitioned with EtOAc, n-BuOH, and $H_2O$ fractions. The repeated silica gel ($SiO_2$), octadecyl $SiO_2$ (ODS), and Sephadex LH-20 column chromatographies of the EtOAc fraction led to isolation of 12 phenolic compounds. The chemical structures of the compounds were determined as sanggenol Q (1), sanggenol A (2), sanggenol L (3), kuwanon T (4), cyclomorusin (5), sanggenon F (6), sanggenol O (7), sanggenon N (8), sanggenon G (9), mulberrofuran G (10), mulberrofuran C (11), and moracin E (12). All isolated compounds were evaluated for inhibit lipopolysaccharide-induced nitric oxide production in RAW 264.7 macrophages.

• Journal of Applied Biological Chemistry
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• 제57권1호
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• pp.29-32
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• 2014

This study was initiated to search for the most effective method for extraction of anthocyanins from Morus alba Fruits using organic acids and to evaluate the stability of the pigments at various storage environments. The anthocyanins were effectively extracted by addition of organic acids such as citric acid, malic acid and fumaric acid. The anthocyanins were not degraded at $25^{\circ}C$ and under a fluorescent light with 183 lux, but sharply degraded at $60^{\circ}C$.