Browsing by Author "Büyükkileci, Ali Oğuz"
Now showing items 1-19 of 19
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Batch production of L(+) lactic acid from whey by Lactobacillus casei (NRRL B-441)
Büyükkileci, Ali Oğuz; Harsa, Hayriye Şebnem (Wiley, 2004-09)The effects of temperature, pH, and medium composition on lactic acid production by Lactobacillus casei were investigated. The highest lactic acid productivity values were obtained at 37 °C and pH 5.5. The productivity was ... -
Comparison of liquid hot water, very dilute acid and alkali treatments for enhancing enzymatic digestibility of hazelnut tree pruning residues
Sabancı, Kevser; Büyükkileci, Ali Oğuz (Elsevier, 2018-08)The effect of pretreatments on the composition of the hazelnut tree pruning residue (HTPR) and on the digestibility of the cellulose was investigated. The liquid hot water (LHW) and the very dilute acid (VDA) treatments ... -
Dilute-acid hydrolysis of apple, orange, apricot and peach pomaces as potential candidates for bioethanol production
Üçüncü, Can; Tarı, Canan; Demir, Hande; Büyükkileci, Ali Oğuz; Özen, Banu (American Scientific Publishers, 2013-07)Chemical composition of four selected fruit pomaces (agro-industrial wastes) was evaluated. The effect of temperature, time, acid concentration and solid:liquid (S:L) ratio on dilute-acid hydrolysis of selected pomaces ... -
Enhanced production of exo-polygalacturonase from agro-based products by Aspergillus sojae
Büyükkileci, Ali Oğuz; Tarı, Canan; Fernandez-Lahore, Marcello (North Carolina University, 2011-08)Aspergillus sojae has been previously shown to produce exo-polygalacturonase (exo-PG) in synthetic media, where the potential of the organism to utilize agricultural substrates was not considered so far. In this study, the ... -
Exploitation of agricultural wastes and by-products for production of Aureobasidium pullulans Y-2311-1 xylanase: Screening, bioprocess optimization and scale up
Yeğin, Sırma; Büyükkileci, Ali Oğuz; Sargın, Sayıt; Göksungur, Yekta (Springer, 2017-04)The potential of several agricultural wastes and by-products (wheat bran, oat bran, corn cob, brewer’s spent grain, malt sprout, artichoke stem, sugar beet pulp, olive seed, cotton stalk and hazelnut skin) was examined as ... -
Extraction of phytochemicals from Scolymus hispanicus and determination of potential health effects
Ahmad, Bilal (Izmir Institute of Technology, 2017-12)Golden thistle (Scolymus hispanicus) is an edible medicinal plant growing in Turkey. It has been in use since decades for the treatment of various disorders by local folks. In the past the extracts from the root barks of ... -
Investigations on the effects of carbon sources and pH on exo-polygalacturonase productions by aspergillus sojae
Kuru, Gülten (Izmir Institute of Technology, 2013)Pectinases are a group of enzymes that are responsible for degredation of pectic substances. Pectinases are produced by many organisms including plants, bacteria and fungi. The aim of this study was to investigate the ... -
KRİTİK ALTI SU İLE FINDIK ATIKLARINDAN ANTİOKSİDAN BİLEŞİKLERİN EKSTRAKSİYONU
Sürek, Ece; Büyükkileci, Ali Oğuz (2018)Türkiye fındık üretim ve ihracatında dünya lideridir. Fındığın tarımı ve işlenmesi sırasında büyük miktarda kabuk, zuruf ve dal gibi atıklar açığa çıkmaktadır. Bu atıkların çevre dostu bir teknoloji ile işlenmesi ve önemli ... -
L(+)lactic acid production from whey by lactobacillus casei NRRL B-441
Büyükkileci, Ali Oğuz (Izmir Institute of Technology, 2000)Lactic acid, its derivatives and poly-lactic acid are widely used in the industry. Lactic acid has been produced chemically or by fermentation for many years. However, there is a need to develop low cost production and ... -
Polysaccharide based packaging film for fresh cut produce
Şamlı, Merve (Izmir Institute of Technology, 2017-02)In this thesis, agro industrial wastes such as bracts and leaves of artichoke were used to develop biodegradable packaging materials for fresh-cut artichokes. As flim forming materials; cellulose, hemicellulose, lignin and ... -
Prebiotic oligosaccharide production from hazelnut wastes
Sürek, Ece (Izmir Institute of Technology, 2017-07)Turkey is the world leader in hazelnut production and a large amount of wastes is produced during its harvesting and processing. Obtaining valuable products from hazelnut by-products can add value to those. In this study, ... -
Pretreatment methods for valorization of hazelnut pruning wastes
Doğru, Kevser (Izmir Institute of Technology, 2016-12)Turkey is the world leader in hazelnut production and a large amount of residues is produced during its harvesting and processing. So far, the residues of hazelnut production had no economic value and usually burned in the ... -
Production of xylooligosaccharides by autohydrolysis of hazelnut (Corylus avellana L.) shell
Sürek, Ece; Büyükkileci, Ali Oğuz (Elsevier, 2017-10)Hazelnut shell (HS), husk and pruning residues were characterized and evaluated for xylooligosaccharides (XOS) production by autohydrolysis. HS contained the highest amount of xylan and yielded more XOS compared to other ... -
Temperature and glycerol formation: A proposal to explain the causal relationship based on glycolytic enzyme activities
Büyükkileci, Ceylan; Batur, Aysem; Büyükkileci, Ali Oğuz; Hamamcı, Haluk (American Society for Enology and Viticulture, 2019-04)Most yeast strains produce glycerol in larger quantities when cultivated at higher temperatures, which likely explains why red wines contain higher amounts of glycerol than white wines. In this work, we used a kinetic and ... -
Utilization of organce peel extract for fungal enzyme production
Genç, Berna (Izmir Institute of Technology, 2013)Pectinases are a group of hydrolytic enzymes that degrade pectic substances and produced by a variety of microorganisms including filamentous fungi. In previous studies orange peel especially in solid state fermentations ... -
UTILIZATION OF WHITE GRAPE POMACE FOR LACTIC ACID PRODUCTION
Bayrak, Emrah; Büyükkileci, Ali Oğuz (2018)Beyaz üzüm posası (BÜP), biyo-temelli kimyasalların fermantasyonla üretimi için kullanılma potansiyeline sahip yüksek miktarda çözünmüş karbonhidrat (glikoz ve fruktoz) içerir. Bu çalışmada, bu atık Lactobacillus casei ile ... -
Utilization of wine waste for fermentative processes
Bayrak, Emrah (Izmir Institute of Technology, 2013)Grape pomace is generally considered as most valuable waste of winemaking process. Two different grape types of Syrah (red) and Muscat (white) were collected in the middle of the harvest season after pressing steps of both ... -
Utilization of xylan-type polysaccharides in co-culture fermentations of Bifidobacterium and Bacteroides species
Zeybek, Nüket; Rastall, Robert A.; Büyükkileci, Ali Oğuz (Elsevier, 2020-05)Although most members of the genus Bifidobacterium are unable to utilize xylan as a carbon source, the growth of these species can be induced by this polysaccharide in the gut environment. This indicates a requirement for ... -
Xylan degradation mechanism of human intestinal bacteria
Polat, Nüket (Izmir Institute of Technology, 2017-07)Xylan is the second most abundant plant cell wall polysaccharide after cellulose. The xylan rich lignocellulosic material obtained from agriculture, forestry and industrial wastes provides cost effective raw materials. The ...
