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RISS 인기검색어
- 검색키워드
- 저자 : Serpil Ozturk (검색결과 3 건)
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Hamit Koksel,Serpil Ozturk,Kevser Kahraman,Arzu Basman,Ozen Ozboy Ozbas,Gi-Hyung Ryu 한국식품과학회 2008 Food Science and Biotechnology Vol.17 No.4
The aim of this study was to produce resistant starch preparations from acid-modified corn starches prepared at various hydrolysis levels (0.5-4.0 hr). Effect of autoclaving cycles on resistant starch (RS) formation was investigated. Molecular weight distribution, pasting and functional properties of acid-modified corn starches were determined. For RS formation native and acid-modified starch samples were gelatinized and autoclaved (1 or 2 cycles). While native and acid-modified starches did not contain any RS, the levels increased to 9.0-13.5% as a result of storage at 95℃ after first autoclaving cycle. Second autoclaving cycle together with storage at 95℃ brought final RS contents of the samples incubated at 4 and 95℃ after the first cycle to comparable level. As acid modification level increased, the amount of high molecular weight fractions decreased, resulting in significant decreases in viscosities (p<0.05). The samples produced in this study had low emulsion stability and capacity values.
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Ayse N. Inkaya,Duygu Gocmen,Serpil Ozturk,Hamit Koksel 한국식품과학회 2009 Food Science and Biotechnology Vol.18 No.6
Chestnut flours (CFs) were produced from 3 chestnut samples (Aydin, Kutahya, and Bursa) by 2 different methods (boiled and oven-dried: BOD-CF and freeze-dried: FD-CF). Functional properties and effects of CF addition (10, 20, and 30%) on the qualities of regular and low-fat cookie were investigated. The freeze drying significantly increased water solubility of CFs but decreased their water binding capacity. The emulsion capacity and stability of FD-CFs were higher than those of BOD-CFs. At pH 4, 6, 8, and 10 FD-CFs had better gelation properties. Spread ratio (SR) values of BOD-CF supplemented regular or low-fat cookies decreased with increasing CF levels. Hardness values of CF supplemented regular cookies were generally lower compared to control. SR and hardness values of FD-CF supplemented cookies were higher than those of BOD-CF supplemented ones. Surface colors of the cookies were darker with FD-CF addition as compared to BODCF addition. In low-fat cookies, the sample supplemented with 10% Kutahya FD-CF had the highest taste-flavor value. FDCF supplementation generally resulted in higher appearance and taste-flavor scores than BOD-CF supplementation in cookies.
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Effects of Fiber-rich Apple and Apricot Powders on Cookie Quality
Ibrahim T. Seker,Ozen Ozboy-Ozba?,Incilay Gokbulut,Serpil Ozturk,Hamit Koksel 한국식품과학회 2009 Food Science and Biotechnology Vol.18 No.4
Apple and apricot powders (APL-P and APR-P) were produced from apple and apricot fruits and they were used in cookie formulation at the levels of 10-40% (in flour bases). The APL-P and APR-P were rich in terms of total dietary fiber (TDF) and antioxidant power. The APR-P supplemented cookies had higher spread ratio and lower hardness values than the APL-P supplemented ones at all addition levels. The color values of the APR-P supplemented cookies were all acceptable. Overall sensory scores of the cookies supplemented with APL-P and APR-P were not significantly different from the control up to 20% addition. TDF contents of the supplemented cookies increased significantly with increasing addition level (p<0.01). The replacement of flour by APL-P and APR-P in wire-cut cookies showed that the physical characteristics and textural properties of the cookies were significantly affected (p<0.01) and APR-P appeared to be a more suitable replacer of flour than APL-P. Addition of both fruit powders upto 20% into the cookie formulation were evaluated as acceptable in terms of the sensory properties.
ScienceON
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