7 research outputs found

    Comparison of Free Amino Acids and Dipeptide Contents, Warner-Bratzler Shear Force and Sensory Property of Beef Jerky Manufactured with Different Drying Methods

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    This study was conducted in order to investigate the effect of different drying methods on free amino acids and dipeptide contents, Warner-Bratzler shear force and sensory property of beef jerky products. The drying methods used for this study were sun-drying, shade-drying and hot air-drying methods. The sun-dried beef jerky had the highest free amino acids (277.45 mg/100 g) followed by shade-dried (206.43 mg/100 g) and hot air-dried (111.88 mg/100 g) ones, whereas the amount of dipeptides were the highest in the shade-dried beef jerky followed by sun-dried and hot air-dried ones. The fatty acid composition of the beef jerky was not shown any difference among the beef jerkies with 3 different drying methods. The color L*-value of the beef jerky was lower in the hot-air dried, while the a*-value was higher in the sun-dried one. The shade-dried jerky showed a lower b*-value. The shear force of beef jerky was lower when it was either sun-dried or shade-dried than when it was hot air-dried. Sensory evaluation revealed that hot air-dried beef jerky scored lower than the sun-dried and shade-dried ones (p<0.05). Therefore, using either the sun drying or shade drying methods is more desirable than using the hot air drying method when manufacturing beef jerky for superior physicochemical qualities.Y

    A Study on Components Related to Flavor and Taste in Commercial Broiler and Korean Native Chicken Meat

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    ์ผ๋ฐ˜ ์œก๊ณ„์™€ ํ† ์ข…๋‹ญ์˜ ์ •๋ฏธ์ธ์ž๋ฅผ ๋น„๊ต ๋ถ„์„ํ•˜๊ธฐ ์œ„ํ•˜์—ฌ ์‹œ์žฅ ์ถœํ•˜ ์‹œ๊ธฐ์ธ ์ฒด์ค‘2 kg ๋‚ด์™ธ์˜ ์ผ๋ฐ˜ ์œก๊ณ„(5์ฃผ)์™€ ํ† ์ข…๋‹ญ(13์ฃผ)์„ ๊ฐ๊ฐ ๋„๊ณ„ํ•œ ํ›„ ๊ฐ€์Šด์œก, ๋‹ค๋ฆฌ์œก์˜ ์ •๋ฏธ์„ฑ๋ถ„์ธ ์ง€๋ฐฉ์‚ฐ, ์œ ๋ฆฌ์•„๋ฏธ๋…ธ์‚ฐ ๋ฐ ํœ˜๋ฐœ์„ฑ ํ–ฅ๊ธฐ ์„ฑ๋ถ„์„ ๋ถ„์„ํ•˜์˜€๋‹ค. ๊ฐ€์Šด์œก ๋ฐ ๋‹ค๋ฆฌ์œก์—์„œ ์ผ๋ฐ˜ ์œก๊ณ„์™€ ํ† ์ข…๋‹ญ๊ฐ„์˜ ์ฃผ์š” ์ง€๋ฐฉ์‚ฐ์€ ํฐ ์ฐจ์ด๊ฐ€ ์—†์—ˆ์œผ๋‚˜ ํ† ์ข…๋‹ญ์—์„œ ๋‹ค๊ฐ€๋ถˆํฌํ™”์ง€๋ฐฉ์‚ฐ์ธ arachidonic acid ๋ฐ docosahexaenoic acid์˜ ํ•จ๋Ÿ‰์ด ์ผ๋ฐ˜ ์œก๊ณ„์— ๋น„ํ•˜์—ฌ ๋†’์€ ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ๊ฐ€์Šด์œก์—์„œ์˜ ์•„๋ฏธ๋…ธ์‚ฐ ์กฐ์„ฑ์€ ํ’๋ฏธ์„ฑ๋ถ„๋“ค์ธ aspartic acid, threonine, serine, glycine, alanine, tyrosine, lysine, histidine, arginine์˜ ํ•จ๋Ÿ‰์ด ์ผ๋ฐ˜ ์œก๊ณ„์— ๋น„ํ•˜์—ฌ ํ† ์ข…๋‹ญ์—์„œ ์œ ์˜์ ์œผ๋กœ ๋†’์•˜์œผ๋‚˜ ๋‹ค๋ฆฌ์œก์—์„œ๋Š” ์ผ๋ฐ˜ ์œก๊ณ„์™€ ํ† ์ข…๋‹ญ ๊ฐ„์— ์œ ์˜์ ์ธ ์ฐจ์ด๊ฐ€ ์—†์—ˆ๋‹ค. ํœ˜๋ฐœ์„ฑ ํ–ฅ๊ธฐ ์„ฑ๋ถ„์„ ์ธก์ •ํ•œ ๊ฒฐ๊ณผ, ๊ฐ€์—ด์— ์˜ํ•˜์—ฌ ํ† ์ข…๋‹ญ์ด ์ผ๋ฐ˜ ์œก๊ณ„๋ณด๋‹ค ๊ณ ๊ธฐ์˜ ํ’๋ฏธ์— ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ํ–ฅ๊ธฐ ์„ฑ๋ถ„์˜ ์–‘์ด ์ฆ๊ฐ€ํ•œ ๊ฒƒ์œผ๋กœ ํ™•์ธ๋˜์—ˆ๋‹ค.N

    Microbiological and Mutagenical Safety Evaluation of Gamma Irradiated Ready-to-Eat Foods of Animal Origin

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    ๊ฐ๋งˆ์„  ์กฐ์‚ฌ๋ฅผ ํ†ตํ•œ ์ฆ‰์„์‹ํ’ˆ ์ œ์กฐ์šฉ ์œก๊ฐ€๊ณต์ œํ’ˆ์˜ ๋ฏธ์ƒ๋ฌผํ•™์  ๋ฐ ์œ ์ „ ๋…์„ฑํ•™์  ์•ˆ์ „์„ฑ ํ‰๊ฐ€๋ฅผ ์‹ค์‹œํ•˜์˜€๋‹ค. ๋ฏธ์ƒ๋ฌผ ์•ˆ์ „์„ฑ์€ ์ด 4์ข…๋ฅ˜์˜ ๋ณ‘์›์„ฑ ๋ฏธ์ƒ๋ฌผ(Salmonella typhimurium, Escherichia coli, Staphylococcus aureus ๋ฐ Listeria ivanovii)์„ ์ด์šฉํ•˜์—ฌ inoculation test๋ฅผ ์‹ค์‹œํ•˜์˜€์œผ๋ฉฐ ์œ ์ „ ๋…์„ฑํ•™์  ํ‰๊ฐ€๋Š” ames test๋ฅผ ํ†ตํ•ด ์กฐ์‚ฌํ•˜์˜€๋‹ค. 4 ์ข…๋ฅ˜์˜ ๋ณ‘์›์„ฑ ๋ฏธ์ƒ๋ฌผ์„ ๋ณถ์€ ์‡ ๊ณ ๊ธฐ ๋ฐ ํ–„์— ์ ‘์ข…ํ–ˆ์„ ๊ฒฝ์šฐ ์ดˆ๊ธฐ ๊ท ์ˆ˜๋Š” 7 log ์ •๋„๋กœ ๋‚˜ํƒ€๋‚ฌ์œผ๋‚˜ 1 kGy๋กœ ๊ฐ๋งˆ์„  ์กฐ์‚ฌํ–ˆ์„ ๊ฒฝ์šฐ S. typhimurium์€ 4 log cycle ์ •๋„, E. coli ๋ฐ S. aureus๋Š” 3 log ๋ฐ L. ivanovii๋Š” 2 log ์ •๋„ ์ฆ์‹์ด ์–ต์ œ๋˜์—ˆ๋‹ค. ๋ณถ์€ ์‡ ๊ณ ๊ธฐ ๋ฐ ํ–„์— ์ ‘์ข…๋œ 4 ์ข…๋ฅ˜์˜ ๋ณ‘์›์„ฑ ๋ฏธ์ƒ๋ฌผ์€ 3 kGy์˜ ์„ ๋Ÿ‰์œผ๋กœ ๊ฐ๋งˆ์„  ์กฐ์‚ฌํ–ˆ์„ ๊ฒฝ์šฐ ๊ฒ€์ถœ๋˜์ง€ ์•Š์•˜๋‹ค. ๋ณถ์€ ์‡ ๊ณ ๊ธฐ ๋ฐ ํ–„์— ์ ‘์ข…๋œ 4์ข…๋ฅ˜์˜ ๋ณ‘์›์„ฑ ๋ฏธ์ƒ๋ฌผ์˜ ๋ฐฉ์‚ฌ์„  ์กฐ์‚ฌ์— ๋Œ€ํ•œ ๊ฐ์ˆ˜์„ฑ์„ ์ธก์ •ํ•œ ๊ฒฐ๊ณผ ์ ‘์ข…๋œ ๋ณ‘์›์„ฑ ๋ฏธ์ƒ๋ฌผ์˜ D10 value๋Š” ๋ณถ์€ ์‡ ๊ณ ๊ธฐ์— ์ ‘์ข…๋œ L. ivanovii๊ฐ€ 0.48๋กœ ๊ฐ€์žฅ ๊ฐ์ˆ˜์„ฑ์ด ๋‚ฎ์€ ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ๋ณถ์€ ์‡ ๊ณ ๊ธฐ ๋ฐ ํ–„์„ ๋น„์กฐ์‚ฌ๊ตฌ์™€ ์กฐ์‚ฌ๊ตฌ(10 kGy)๋กœ ๋‚˜๋ˆ„์–ด S. typhimurium TA98 ๋ฐ TA100 ๋‘ ๊ท ์ฃผ๋ฅผ ์ด์šฉํ•˜์—ฌ ์œ ์ „ ๋…์„ฑํ•™์  ์•ˆ์ „์„ฑ์„ ํ‰๊ฐ€ํ•œ ๊ฒฐ๊ณผ ๋Œ€์‚ฌํ™œ์„ฑ์„ ์‹œํ‚จ ๊ฒฝ์šฐ์™€ ๋Œ€์‚ฌํ™œ์„ฑ์„ ์‹œํ‚ค์ง€ ์•Š์€ ๊ฒฝ์šฐ ๋ชจ๋‘ ์ถ”์ถœ๋ฌผ์˜ ๋†๋„์— ๋”ฐ๋ฅธ ๋ณต๊ท€๋Œ์—ฐ๋ณ€์ด ์ง‘๋ฝ์ˆ˜์˜ ์ฆ๊ฐ€๋Š” ํ™•์ธ๋˜์ง€ ์•Š์•„, ์ฆ‰์„ ์‹ํ’ˆ์ œ์กฐ๋ฅผ ์œ„ํ•œ ๋ณถ์€ ์‡ ๊ณ ๊ธฐ ๋ฐ ํ–„์˜ ๊ฐ๋งˆ์„  ์กฐ์‚ฌ๋Š” ์œ ์ „๋…์„ฑํ•™์ ์œผ๋กœ ์•ˆ์ „ํ•œ ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. The radio-sensitivity of pathogens and the effect of irradiation on microbiological safety and mutagenicity of meat products such as seasoned and cooked beef and ham were investigated. Samples were radiation-sterilized and inoculated at 107 cfu/g with each of the four pathogens including Salmonella typhimurium, Escherichia coli, Staphylcoccus aureus, and Listeria ivanovii. No viable cells of pathogens were observed in the sample irradiated with 3 kGy. The D10 value of inoculated pathogens in seasoned and cooked beef and ham were 0.24๏ฝž0.48 and 0.39๏ฝž0.45, respectively. Results of Ames test performed with non-irradiated and irradiated seasoned and cooked beef and ham were both negative at the level of 625, 1,250, 2,500, 50,000, and 10,000 ใŽ sample/plate, respectively. Results indicate that low dose (2๏ฝž3 kGy) irradiation is effective to ensure safety for seasoned and cooked beef and ham with toxicological wholesomeness.N

    ์ €์žฅ ์˜จ๋„๋ฅผ ๋‹ฌ๋ฆฌํ•˜์—ฌ ์ €์žฅํ•œ ์–‘๋… ๋‹ญ๊ฐ€์Šด์‚ด์˜ ์ฒœ์—ฐ ํ•ญ๊ท ๋ฌผ์งˆ ํšจ๊ณผ

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    CPE, OPE, and their combination with calcium lactate were the most effective in the prevention of total aerobic bacteria growth during storage. Therefore, these marinades could be used as natural preservations to extend the shelf life of chicken breast. Furthermore, these marinades resulted in enhanced stability of meat color over time. However, the sensory attributes of CPE and OPE marinades may be objectionable and the use of effective methods or modified formulations to overcome this, while maintaining the desirable effects, may be required.N
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