COMPARATIVE STUDY OF FERMENTATION PROCESSES OF YAK AND COW MILK

Aygül USUBALİYEVA | Cıldızay ÖZBEKOVA

Yak milk is a valuable raw material for the production of functional food. Investigation of the fermentation process with commercial starter cultures is conducted to find suitable starters for producing fermented yak milk products on an industrial scale using modern rheological, microbiological, and sensorial methods. According to the acidification curve and rheological measurement, the gel-forming time of yak milk with mesophilic, thermophilic and mixed (meso-thermophilic) starter cultures was not significantly different from cow milk; but, yak milk had a significantly higher gel strength in ...Daha fazlası

Investigation of changes in chemical composition and rheological properties of Kyrgyz rice cultivars (Ozgon rice) depending on long-term stack-storage after harvesting

Camilya SMANALİYEVA | Kalıypa SALİYEVA | Bakıt BORKOYEV

The present work investigated the effect of long-term stack-storage after harvesting on selected chemical and rheological properties of Kyrgyz rice cultivars, Ozgon. The performance indicators of in stack-stored Ozgon rice samples after 4, 6, and 12 days was grain size, grain weight, color, moisture, total starch, amylose, protein, fat and ash contents, and mineral composition as well as the rheological properties of rice flour dough. The change of stored rice is caused by the organic modification of the starch structure, decreasing of moisture as well as proteolysis of proteins in the endospe ...Daha fazlası

Amino Acid and Fatty Acid Profile of the Mare's Milk Produced on Suusamyr Pastures of the Kyrgyz Republic During Lactation Period

Ayçürök MACİTOVA | Asılbek KULMIRZAYEV | Cıldızay ÖZBEKOVA | Aybek BODOŞOV

The high nutritional and health-promoting properties of kymyz, a traditional drink of nomads produced from mare's milk, are well-known and reported in literature. The composition of mare's milk is significantly different from that of cow and other ruminants. Fatty acid composition and amino acid profile of mare's milk produced at Suusamyr pastures of Kyrgyzstan were studied during four lactation months (May, June, July and August). The amino acid composition was determined by precolumn derivatization with diethyl ethoxymethylenemalonate (DEEMM) in high-performance liquid chromatography (HPLC) ...Daha fazlası

Detection of Escherichia coli O157:H7 using immunomagnetic separation and mPCR in Turkish foods of animal origin

Zafer GÖNÜLALAN

The present study was conducted to investigate the presence of Escherichia coli O157:H7 in food samples of animal origin and to detect its virulence genes by immunomagnetic separation technique and multiplex PCR (mPCR). A total of 500 samples (consisting of diced meat, minced meat, burger, raw cow's milk and raw cow's milk cheese) were analysed. Escherichia coli O157:H7 was detected in 5 (1%) of 500 analysed samples including two diced meat, one minced meat and two raw-milk cheese. None of the burger samples tested contained E. coli O157:H7. Three isolates obtained from minced and diced meat w ...Daha fazlası

Urgent Measures to Improve Food Quality and Safety Control in the Kyrgyz Republic

Asılbek KULMIRZAYEV

The chapter discusses the food quality and safety control system in the Kyrgyz Republic. Specifically, the chapter introduces current socio-economic situation, characterization of the domestic food market, and elements of the national food control system upon adopting a series of new regulations since 2004. The new food safety system is progressively setting up, but there are a number of problems that holds back the implementation of new approaches to the assurance of food safety. These problems are mainly related to the underdeveloped national economy and poor socio-economic status of the pop ...Daha fazlası

Front face fluorescence spectroscopy as a tool for comparison of aromatic amino acids, nucleic acids, vitamin A and FMRP containing in different egg types

Mustafa Haluk ÇELİK

Fluorescence spectroscopy was used to determine contents of amino acids, nucleic acids, Maillard reaction products and vitamin A in whites and yolks of eggs from hens, geese, ducks and quail. The fluorescence spectra obtained varied between egg types and allowed the eggs to be grouped and differentiated from each other on the basis of their composition. Keywords: amino acids; duck eggs; ducks; eggs; fluorometry; geese; maillard reaction; maillard reaction products; nucleic acids; quail eggs; quails; retinoids; spectrofluorometry; spectroscopy; vitamin a; goose eggs

Analytical and rheological investigations into selected unifloral German honey

Camilya SMANALİYEVA

The physicochemical and rheological properties parameters of five German unifloral honey: false acacia, heather, sunflower, lime and rape (39 samples) were analysed to demonstrate the relation between botanical origin and material properties. The validity of the rheological constitutive equations by Herschel-Bulkley, Ostwald-De Waele and Newton was confirmed by varying temperature and crystalline state. Highly structured (crystalline) honey exhibits temperature dependent with all rheological anomalies (shear thinning, yield point and rheodynamic behaviour) and can described an average effectiv ...Daha fazlası

Rheological, microbiological and sensory properties of fermented khainak milk fermented with different starter cultures

Cıldızay ÖZBEKOVA | Aygül USUBALİYEVA | Ruslan ADİL AKAY TEGİN | Anarseyit DEYDİEV

A comparison study of the fermentation process of khainak (a hybrid of yak and cattle) and cow milk with commercial yoghurt (thermophilic), quark (mesophilic and mixed) starter cultures was conducted to find suitable starters using modern rheological, microbiological, and sensory methods. Lactic acid accumulation dynamic during the fermentation process of khainak milk with yoghurt starters was faster but did not differ from cow milk. The gel strength of the fermented khainak milk (206.3-447.2 Pa) was higher than that of cow milk (40-158 Pa). The total viable bacterial counts of all samples wer ...Daha fazlası

Thermal stability enhancement of berry anthocyanins by co-pigmentation with extracts from natural sources

Ayçürök MACİTOVA | Aydaykan KASIMAKUNOVA

The suitability of mandarin (MP), orange (OP) and pomegranate peel powders (PP) for co-pigmentation of dewberry, viburnum, red hawthorn, black hawthorn, and barberry anthocyanins was investigated. Spectrophotometric measurements indicated co-pigmentation causing both a hyperchromic effect (Delta ABS(max) 5-13) and bathochromic shift (Delta lambda (vis-max) up to 13 nm). The degradation kinetics of anthocyanins were estimated at temperatures ranging from 70 to 90 degrees C. First-order reactions with rate constants of 0.45-2.93 min(-1) and 0.30-2.00 min(-1) were observed for the reference and P ...Daha fazlası

Magnetic nanoparticles preparation by chemical reduction for biomedical applications

Ruslan ADİL AKAY TEGİN

This work presents Fe3O4 and AgFe nanoparticles with an average diameter of 25 and 15 nm synthesized by chemical reduction of corresponding salts under a mild condition. Cubic crystal structure and spherical shape of the nanoparticles were studied by X-ray diffraction, Field emission SEM and energy-dispersive spectroscopy analysis. For biomedical applications, the nanoparticles were tested against bacteria E.coli and results revealed AgFe nanoparticles

Erratum: On the Temporal Stability of Analyte Recognition with an E-Nose Based on a Metal Oxide Sensor in Practical Applications (vol 18, 550, 2018)

Ruslan ADİL AKAY TEGİN | Camilya SMANALİYEVA | Coşkan ILICALI

Determination of physicochemical parameters, phenolic content, and antioxidant capacity of wild cherry plum (Prunus divaricata Ledeb.) from the walnut-fruit forests of Kyrgyzstan

Camilya SMANALİYEVA | Canıl İSKAKOVA | Cıldız ÖSKÖNBAEVA

Wild fruits and berries from the walnut-fruit forests of Kyrgyzstan may hold nutritional and health benefits for humans. Since information on their nutritional value is scarce, physical properties and nutritional value of naturally occurring red, black, and yellow cherry plum fruits (Prunus divaricata Ledeb.) were evaluated. The wild cherry plums featured moisture contents between 81.07 and 85.87%, reducing sugar contents of 6.83-8.42%, alimentary fiber of 0.78-1.38%, ash contents of 0.48-0.74%, acidity levels of 0.97-2.31%, and ascorbic acid concentrations of 16.00-30.25 mg/100 g. The total p ...Daha fazlası