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RISS 인기검색어
- 검색키워드
- 주제어 : dry heat treatment time (검색결과 4 건)
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Oh, Im Kyung,Bae, In Young,Lee, Hyeon Gyu Elsevier 2018 Journal of cereal science Vol.79 No.-
<P><B>Abstract</B></P> <P>High amylose rice starch was modified by dry heat treatment for different heating times (0, 1, 2, and 4 h) after mixing with various hydrocolloid type (carboxymethyl cellulose (CMC), guar gum, and xanthan gum) to improve its processability and nutritional properties. The hydration/pasting properties, gel texture, and <I>in vitro</I> starch digestibility of dry heat treated hydrocolloid-starches were investigated and analyzed by principle component analysis (PCA). Dry heat treatment increased the pasting properties of rice starch, although a longer heating time led to lower pasting and hydration properties as well as gel strength. Highest peak viscosity and gel strength were observed for dry heat treated xanthan-starch, followed by CMC- and guar-starch. In the results of <I>in vitro</I> starch digestibility, dry heat treatment significantly decreased the rapidly digestible starch contents and predicted glycemic index (pGI) compared to native starch, while dry heat treated xanthan starch most effectively retarded starch digestibility. PCA indicated that hydrocolloid type affected the hydration properties, and that heating time was correlated with pasting properties and pGI. These results demonstrated that high amylose rice starch dry heat treated with xanthan for 2 h could be effective in changing the hydration, pasting and gel characteristics as well as <I>in vitro</I> starch digestibility.</P> <P><B>Highlights</B></P> <P> <UL> <LI> High amylose rice starch was dry heat treated with hydrocolloid type and heating time. </LI> <LI> The higher heating time led to the lower swelling power and pasting viscosity. </LI> <LI> Xanthan was more effective for delaying starch digestibility than CMC or guar gum. </LI> <LI> There were significant Pearson correlations between gel strength and digestibility. </LI> <LI> DHT with xanthan for 2 h was the optimum preparation of retarded starch hydrolysis. </LI> </UL> </P>
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스판덱스 코어 나일론 커버링 two way 복합사 직물의 전단특성
李春吉 慶一大學校 2002 論文集 Vol.18 No.-
The two way fabrics woven by spandex-core nylon-covering complex yarn play a decisive role in producing the high quality textile garments. The fabrics used in this experiments, woven by polyurethane 40 denier core filament and nylon 140 denier/ 48 filaments covering yarn, were wet and dry heat treated two way fabrics. We performed the experiments to know the influence of treatment time and temperature on the shear properties of the two way fabrics. In wet treatment, the samples were made by using the two way fabric at boiling temperature through the treatment time of 2, 4, 6, 8, 10 min. respectively. In dry treatment, the samples were made at the temperature of 100, 120, 140, 160℃ for 2, 6, 10, 20 min. respectively. The shear properties of the samples were evaluated by using Kawabata Hand Evaluation System. Through the experiments the following results were obtained. The shear stiffness of the wet treated samples increased according to the treatment time and the shear stiffness of the dry treated samples decreased at the treatment temperature of 160℃ according to the treatment time. The hysteresis of shear force at the shear angle φ=0.5° of the wet treated samples decreased and the hysteresis of shear force at the shear angle φ=0.5° of the dry treated samples decreased at the treatment temperature of 160℃ according to the treatment time. The hysteresis of shear force at the shear angle φ=5°of the wet treated samples had almost the same values but the hysteresis of shear force at the shear angle φ=5°of the dry treated samples decreased over the treatment temperature of 120℃ according to treatment time.
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Lee, Jung-Han,Han, Ki-Soo,Kim, Tae-Hyoung,Bae, Dong-Won,Kim, Dong-Kil,Kang, Jin-Ho,Kim, Hee-Kyu The Korean Society of Plant Pathology 2007 Plant Pathology Journal Vol.23 No.3
Seedlot disinfection techniques to control mung bean sprout rot caused by Colletoricum acutatum and C. gloeosporioides were evaluated for commercial production scheme. Soaking seedlots in propolis (100 X) and ethanol (20% for 30 min) appeared promising with control values of 85.5 and 80.8 respectively, but still resulted in up to 20% rot incidence. None of the C. acutatum conidia survived through hot water immersion treatment (HWT) for 10 min at temperatures of 55, 60 and $65^{\circ}C$, whereas the effective range of the dry heat treatment (DHT) was $60-65^{\circ}C$. Tolerance of mung bean seedlot, as estimated by hypocotyl elongation and root growth, was lower for HWT than for DHT. Germination and growth of sprouts were excellent over the range of $55-65^{\circ}C\;at\;5^{\circ}C$ intervals, except for HWT at $65^{\circ}C$ for 5 min. At this marginal condition, heat damage appeared so that approximately 2% of seeds failed to sprout to normal germling and retarded sprouts were less than 5% with coarse wrinkled hypocotyls. These results suggested that DHT would be more feasible to disinfect mung bean seedlots for commercial sprout production. Heat treatment at above ranges was highly effective in eliminating the epiphytic bacterial strains associated with marketed sprout rot samples. HWT of seedlot at 55 and $60^{\circ}C$ for 5 min resulted in successful control of mung bean sprout rot incidence with marketable sprout quality. DHT at 60 and $65^{\circ}C$ for 30 min also gave good results through the small-scale sprouting system. Therefore, we optimized DHT scheme at 60 and $65^{\circ}C$ for 30 min, considering the practical value of seedlot disinfection with high precision and accuracy. This was further proved to be a feasible and reliable method against anthracnose incidence and those bacterial strains associated with marketed sprout rot samples as well, through factory scale mung bean sprout production system.
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