CHARACTERIZATION OF THE EXTRACELLULAR POLYSACCHARIDE FROM FRESH-WATER MICROALGAE CHLORELLA SP

Date

1994-01-01

Author

YALCIN, I
HICSASMAZ, Z
BOZ, B
BOZOGLU, F

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

211
views

0
downloads

The aim of this study was the characterization of the extracellular polysaccharide (gum) from freshwater microalgae Chlorella sp. For this purpose, determination of the component monosaccharides and minerals were chosen as the structural properties, while the thickening effect on aqueous systems and the effect on the dispersed phase volume fraction of oil in water (o/w) emulsions were selected as the functional properties. The gum was found to contain the monosaccharides: glucuronic acid (385 g/kg); arabinose (325 g/kg); glucose (193 g/kg); fucose [alpha- and beta-anomers (31 g/kg and 14 g/kg, respectively)]; and the minerals: calcium (16.3 g/kg); sodium (7.7 g/kg); potassium (20.4 g/kg); and zinc (1.1 g/kg) reported on a dry weight basis. The gum from Chlorella sp. was found to be a potential thickening agent. Its thickening and secondary emulsifying effects were found to be compatible with most of the food-grade salts when these salts are used in the recommended range (1 to 30 g/L) for foods. It was found that its thickening and secondary emulsifying effects are confined to the acidic range (pH 4 to 6).

URI

https://hdl.handle.net/11511/67832

Journal

FOOD SCIENCE AND TECHNOLOGY-LEBENSMITTEL-WISSENSCHAFT & TECHNOLOGIE

Collections

Department of Food Engineering, Article

Suggestions

OpenMETU
Core

Characterization and functional analysis of a novel multicopper oxidase and associated polyketide biosynthesis gene cluster of aspergillus fumigatus Metin, Banu; Ögel, Zümrüt Begüm; Department of Food Engineering (2007) In this study, novel polyketide biosynthesis gene cluster of Aspergillus fumigatus was characterized and functionally analyzed. Analysis of the newly sequenced A. fumigatus genome for laccases, which are involved in melanin biosynthesis and detoxification in fungi, resulted in several putative laccase and multicopper oxidase gene sequences, one of which, Afu4g14490 (tpnJ), was selected for further characterization. The predicted amino acid sequence TpnJp showed 63% identity with the dihydrogeodin oxidase of...
Characterization and reactivity studies for chemical loop gasification of high sulfur lignites Kanca, Arzu; Üner, Deniz; Department of Chemical Engineering (2013) The objective of this study was to characterize and to determine the gasification reactivity of Tuncbilek lignites. The ultimate analysis of Tuncbilek lignite revealed that the elemental composition is 37.7% C, 3.6% H, 1.6% N, and 5.4% S, while the proximate analysis indicated 4.7 ± 0.9% moisture 27.9 ± 0.1% volatiles and 37.9 ± 0.2% ash. In this context, four different reactions during gasification namely, pyrolysis, oxidation, hydrogenation, and wet air oxidation were investigated separately. Carbon resid...
Characterization of extracellular beta-lactamases from penicillin G-resistant cells of Streptococcus thermophilus Chirica, LC; Güray, Nülüfer Tülün; Gültekin, Güzin Candan; Bozoglu, F (International Association for Food Protection, 1998-07-01) In this study, biochemical properties of two extracellular beta-lactamases produced by penicillin-resistant Streptococcus thermophilus cells were investigated. Both beta-lactamases showed specificity for penicillins but not for cephaloridins. The p-lactamases exhibited different affinities for penicillin G. The one with the higher molecular weight (F1) had a K(m) value of 3.44 mu M and a V(max), value of 8.33, mu mol/min/mg of protein, whereas the beta-lactamase with the lower molecular weight (FII) had a K...
Characterization of the MgO/GaSe0.5S0.5 heterojunction designed for visible light communications Qasrawi, A. F.; AlGarni, S. E.; Hasanlı, Nızamı (2015-11-01) In this study an optoelectronic design is reported and characterized. The device is made of p-type MgO solved in sodium silicate binder and n-type GaSe0.5S0.5 heterojunction. It is described by means of X-ray diffraction, optical absorption and reflection in the incident light wavelength range of 190-1100 nm and by means of dark and 406 nm laser excited current (I)-voltage (V) characteristics. The optical reflectance was also measured as a function of angle of incidence of light in the range of 35-80. The s...
A Modeling study about barriers which anatolian teacher training school physics teacher faced implementing micro-computer based laboratory Alptekin, Funda; Eryılmaz, Ali; Department of Secondary Science and Mathematics Education (2018) The aim of this study is fourfold: (a) to explore the barriers Anatolian Teacher Training High School (ATTHS) physics teachers face with implementing Microcomputer Based Laboratory (MBL), (b) to develop two structural equation models (SEM) and a hierarchical linear model (HLM) to determine relationships between these barriers, (c) to describe how MBL is being implemented in ATTHS physics courses and (d) Make suggestions for an effective in-service training course for MBL. A total of fifteen questionnaires w...

Citation Formats

I. YALCIN, Z. HICSASMAZ, B. BOZ, and F. BOZOGLU, “CHARACTERIZATION OF THE EXTRACELLULAR POLYSACCHARIDE FROM FRESH-WATER MICROALGAE CHLORELLA SP,” FOOD SCIENCE AND TECHNOLOGY-LEBENSMITTEL-WISSENSCHAFT & TECHNOLOGIE, pp. 158–165, 1994, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67832.