• Title/Summary/Keyword: simple sugar

Search Result 81, Processing Time 0.025 seconds

The Development of a New Method to Detect the Adulteration of Commercial Aloe Gel Powders

  • Kim, Kyeong-Ho;Lee, Jin-Gyun;Kim, Do-Gyuun;Kim, Min-Ki;Park, Jeong-Hill;Shin, Yong-Geun;Lee, Seung-Ki;Jo, Tae-Hyung;Oh, Sun-Tack
    • Archives of Pharmacal Research
    • /
    • v.21 no.5
    • /
    • pp.514-520
    • /
    • 1998
  • Simple and accurate methods to detect the adulteration of commercial aloe gel powder were developed. Crude polysaccharide in aloe gel powder was isolated by precipitating with excess ethyl alcohol and total hexose in isolated polysaccharide was determineded by dubois assay. After hydrolysis of non-dialysable polysaccharides, resultant free sugar was determined by gas chronmatography for sugar recogniton and ash contents was very low while the content of total hexose was very high. And polysaccharides of these products revealed typical dextran pattern, therefore, these products could be identified that adulterated with commercial maltodextrin. The content of maltodextrin in adulterated product was determined by HPLC and TLC analysis which could be adopted as a part of a certification process.

  • PDF

Construction of Artificial Biosynthetic Pathways for Resveratrol Glucoside Derivatives

  • Choi, Oksik;Lee, Jae Kyoung;Kang, Sun-Young;Pandey, Ramesh Prasad;Sohng, Jae-Kyung;Ahn, Jong Seog;Hong, Young-Soo
    • Journal of Microbiology and Biotechnology
    • /
    • v.24 no.5
    • /
    • pp.614-618
    • /
    • 2014
  • Resveratrol, which is a polyphenolic antioxidant, is dose-dependent when used to provide health benefits, to enhance stress resistance, and to extend lifespans. However, even though resveratrol has therapeutic benefits, its clinical therapeutic effect is limited owing to its low oral bioavailability. An Escherichia coli system was developed that contains an artificial biosynthetic pathway that produces resveratrol glucoside derivatives, such as resveratrol-3-Oglucoside (piceid) and resveratrol-4'-O-glucoside (resveratroloside), from simple carbon sources. This artificial biosynthetic pathway contains a glycosyltransferase addition (YjiC from Bacillus) with resveratrol biosynthetic genes. The produced glucoside compounds were verified through the presence of a product peak(s) and also through LC/MS analyses. The strategy used in this research demonstrates the first harnessing of E. coli for de novo synthesis of resveratrol glucoside derivatives from a simple sugar medium.

Changes in the CO2 and amount of mycelium growth of the liquid spawn on Flammulina velutipes (팽나무버섯 액체 종균 배양시 이산화탄소 농도와 균사 생장량 변화)

  • Shim, Kyu-Kwang;Yoo, Young-Jin;Koo, Chang-Duck;Kim, Young-Seok;Kim, Myung-Koon
    • Journal of Mushroom
    • /
    • v.10 no.1
    • /
    • pp.3-8
    • /
    • 2012
  • In this study, to produce Flammulina velutipes mushroom liquid spawn efficiently and effectively the effects of explosive aeration (supplying air with tiny bubbles) of the liquid culture medium on carbon dioxide concentration and residual sugar content in the medium on carbon dioxide concentration and residual sugar contentin the medium were measured. Carbon dioxide concentrations were measured at the outlet of the incubator. On the third day the explosive aeration greatly increased mycelial growth of the liquid spawn, and carbon dioxide concentration also greatly increased but decreased after 5 days. Free sugar contents in the liquid culture consistantly decreased up to 7 days and thereafter was not detected. The weight of the mycelia were maintained similar levels after 3 days. Total nitrogen content in the liquid medium constantly decreased during the 11days of explosive aeration. The content of free sugars in 7 days of culture was the lowest level, thus the inoculum incubated for 6~7 days was thought to be the most effective. Carbon dioxide concentration measurement at the outlet of the container during the liquid spawn incubation required low cost but was efficient to estimate the degree of mycelial growth to be used as a simple indicator.

Current Strategies for Metabolic Engineering of Lactic Acid Bacteria (유산균 대사공학 기술의 개발 현황)

  • Han, Nam-Soo;Cho, Seung-Kee;Kim, Yu-Jin
    • KSBB Journal
    • /
    • v.25 no.4
    • /
    • pp.311-318
    • /
    • 2010
  • Lactic acid bacteria display a relatively simple metabolism wherein the sugar is converted mainly to lactic acid. The extensive knowledge of metabolic pathways and the increasing information of the genes involved allows for the rerouting of natural metabolic pathways by genetic and physiological engineering. In this contribution, the lactic acid bacteria as an efficient cell factory for different (food) ingredients will be presented. The emphasis will be on some successful examples of metabolic engineering and on the physiology of these bacteria, which makes them so suitable as a cell factory.

A Study on Saccharides in Honey via HPLC (HPLC에 의한 벌꿀의 당성분에 관한 연구)

  • 김완구;정희선
    • Journal of Environmental Health Sciences
    • /
    • v.8 no.2
    • /
    • pp.57-65
    • /
    • 1982
  • Saccharides in Korean honey have been analyzed by traditional wet chemical methods and several chromatographic technics gas, paper, column and thin layer chromatography. A simple, rapid and versatile method for the separation and determination of saccharides via high performance liquid chromatography were used eluting with $H_2O : CH_CN$ at 25:75, at a flow rate of 1.0ml/min. Acasia honey contained 36.8% fructose, 31.4% glucose, 1.7% sucrose and bush clover honey held 34.4% fructose, 32.3% glucose and 30% sucrose. Difference on the regional distribution were not found in the quantity of saccharides (42 species). The quality of inferior honey was assumed to contain much maltose, sugar and glucose than common honey.

  • PDF

Effect of Wasabi (Wasabia japonica Matsum) Stalk on the Fermentation of Baechukimchi

  • Jung, Su-Ji;Jang, Myung-Sook
    • Food Science and Biotechnology
    • /
    • v.17 no.4
    • /
    • pp.692-699
    • /
    • 2008
  • The effects of wasabi stalk on the taste and storage characteristics of baechukimchi were assessed in the final product. Wasabi stalk was added in different ratios: 0, 1, 3, 5, or 7%(w/v) of Chinese cabbage. As the fermentation progressed, the pH of the product dropped. Total acidity increased in all treatments during fermentation. The total vitamin C content increased during the first 8 to 13 days of fermentation. Reducing sugar decreased in all treatment as fermentation continued. The numbers of total cells and lactic acid bacteria increased until they peaked, and then began decreasing as fermentation continued. With regard to acceptability characteristics, the 3% treatment was most favored. With simple regard to the quantitative level of wasabi stalk addition, the 3% treatment was most appropriate under all testing conditions. In conclusion, stalk seems to be an economical and natural additive which has effects on extension of the shelf life of baechukimchi.

Zingiber officinale: A Simple Spice with Health Benefits & Some Modern Researches

  • Abbasi, Hana;Khatoon, Rizwana;Kabir, Hifzul
    • CELLMED
    • /
    • v.9 no.2
    • /
    • pp.3.1-3.5
    • /
    • 2019
  • Zingiber officinale is a spice which is having a strong historical medicinal background and used by different systems of medicine for various ailments. It is also used to maintain the characteristic sharpness and tangy essence of food and beverages and used in carbonated drinks, as a conserve in sugar syrup. Ginger considered as an incredible drug for inflammation, gastrointestinal problems, pain and sexual problems since centuries. There are many studies carried out in recent years, which proves that the active constituents of ginger shows a variety of pharmacological effects like antiemetic, hepatoprotective, anti hyperlipidemic and antibacterial. The most momentous among all the nutraceutical aspects of ginger are its positive control on gastrointestinal tract including digestive stimulant action, anticancer effect and anti-inflammatory effect.

TRIMETHYLGLYCINE: A VEGETAL STRESS-MOLECULE PERFORMING A WIDE RANGE OF COSMETIC ACTIVITY

  • L. Rigano;K. Jutila
    • Proceedings of the SCSK Conference
    • /
    • 2003.09b
    • /
    • pp.192-199
    • /
    • 2003
  • Trimethylglycine, commonly named betaine, is the most simple amphoteric molecule. It is completely vegetal (1,2), as it is produced in the sugar industry by industrial chromatography of molasses. While abundantly used in foods and diet supplements, many interesting applications in cosmetics have recently been investigated, like its capability to increase the volume and stability of foams in surfactant solutions. For its special chemical structure (it is the internal salt of a weak acid and a strong alkali) trimethylglycine is a solvent and buffering agent for strong acids and Lewis' acids. It allows to improve the efficiency of $\alpha$- and $\beta$-hydroxy acids in increasing the physiological rate of epidermal cell renewal, while keeping a low skin-irritation level. In oral care cosmetics, it acts as a mucous membrane protectant (3). For its special water co-ordination capability, its solubilising power, polymer swelling capability, after-feel improvement in hair products, skin moisturization and elasticity enhancing properties, trimethylglycine provides unusual characteristics to many products intended for skin maintenance (4).(omitted)

  • PDF

Production of Fermented Honey Wine (벌꿀발효주의 제조)

  • Rhim, Jong-Whan;Kim, Dong-Han;Jung, Soon-Teck
    • Korean Journal of Food Science and Technology
    • /
    • v.29 no.2
    • /
    • pp.337-342
    • /
    • 1997
  • In order to compare methods of making a mead and a melomel, changes of alcohol contents, reducing sugar, soluble solids, pH and total acidity during fermentation of a mead and Japanese plum melomel was investigated. Fermentation rate of the melomel were much faster than the mead. Reducing sugar and soluble solids were continuously decreased until the 16th day of fermentation, while alcohol contents were increased continuously during the same period. After fermentation of 21 days, alcohol contents of the mead was reached 7.6%, while that of the Japanese plum melomel reached 12.4%. pH and total acidity were not changed considerably during the whole fermentation period. Clear honey wines with transmittance of 99.4% were obtained by membrane filtration. In conclusion, the method of making melomel using the osmotically extracted fruit juice with honey was found to be more advantageous than the method of making a simple mead.

  • PDF

A New Type of the Measuring and Anti-Caking Bag for Powder Materials (새로운 형태의 분체용 계량적 Anti-Caking 봉지)

  • Kim, Joong-Man
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.15 no.4
    • /
    • pp.51-55
    • /
    • 1986
  • The general bag for powder materials such as sugar, salt and detergent used at present is a simple rectangular bag. In the practical uses, it has a lot of faults: it is difficult to reseal after partial usages, occurrence of loss in the case of sharing or adding, difficult for measured uses. Author made a new type of the measuring bag for powder materials in order to improve the problems. The new type of the bag for powder materials consists of a body, fall-induced tube with length scale line, and a pin to open and reseal. It shows various effectiveness: measured use$({\pm}0.6g)$ of powder materials, eatings don't occur during long period after opening, and no skin contamination during use of detergent. Consequently, the new one Is suitable for the measured use of powder materials such as sugar, salt, detergent, MSG and so on.

  • PDF