• 제목/요약/키워드: natural food additive

검색결과 102건 처리시간 0.028초

천년초 추출물과 식이유황의 첨가가 계란의 생산성, 품질 및 관능적 특성에 미치는 영향 (The Effects of the Supplementation of Opuntia humifusa Water Extracts and Methyl Sulfonyl Methane on the Laying Productivity, Egg Quality and Sensory Characteristics)

  • 박선민;안일성;홍상미;김다솔;권대영;양혜정
    • 한국식품영양과학회지
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    • 제39권2호
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    • pp.294-300
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    • 2010
  • 천년초에는 유기산이 다량 함유되어 있을 뿐 아니라 항균효과가 탁월하다는 보고가 있고, 식이유황도 체내 기능을 향상시켜 산란계의 계란 생산성 및 품질을 향상시킬 가능성이 있다는 보고가 있다. 그러므로 본 연구에서는 산란계에게 천년초와 식이유황을 사료에 첨가한 기능성 사료를 산란계에게 급여할 때 계란의 생산성과 품질 및 관능적 특성을 향상시키는 지를 조사하였다. 실험은 35주령의 Lohmann Brown 산란계 총 640마리를 4 처리 8 반복, 반복당 20수씩 완전임의배치를 하여 1) 천년초 0.12%, 2) 식이유황 0.1%, 3) 천년초 0.12%+식이유황 0.1% 또는 4) 물(대조군)을 사료에 골고루 혼합하여 5주 동안 급여하였다. 산란율, 계란 중량, 중량별 계란 생산량, 사료효율은 세군 사이에 통계적으로 유의한 차이가 없었다. 그러나 파란율은 천년초, 식이유황, 또는 천년초+식이유황을 급여한 군이 대조군에 비해 높았고 이러한 차이는 난각두께와 난각강도가 높은 것과 관련이 있었다. 계란의 신선도를 나타내는 Haugh unit, 난백과 난황의 점도도 천년초, 식이유황, 또는 천년초+식이유황을 급여한 군이 대조군에 비해 높았다. 천년초군이 식이 유황군 보다 신선도가 높은 경향을 나타내었지만 통계적으로 유의하지는 않았고 천년초+식이유황군도 천년초군이나 식이유황군과 차이가 없었다. 또한, 저장기간에 따른 계란의 신선도도 천년초, 식이유황, 또는 천년초+식이유황을 급여한 군이 대조군에 비해 높았다. 훈련된 대학생을 대상으로 반숙 난백과 난황에 대한 관능검사를 하였을 때도 난백과 난황에서 모두 질감, 달걀 특유의 비린맛, 느끼함 등에 대한 선호도가 천년초, 식이유황, 또는 천년초+식이유황을 급여한 군이 대조군에 비해 높았다. 결과적으로 천년초 추출물 0.12% 또는 0.1% 식이유황을 산란계의 사료에 첨가하여 급여하였을 때 산란계의 파란율을 감소시키고 저장기간 중에서도 신선도를 유지시키는 등 계란의 품질을 향상시켜 간접적으로 생산성을 향상시켰다. 천년초 추출물과 식이유황을 함께 첨가하였을 때 추가적으로 생산성이나 품질을 향상시키는데 도움이 되지는 않았으므로 천년초 추출물 0.12%이나 0.1% 식이유황을 산란계 사료에 첨가함으로써 계란의 품질을 향상시킬 수 있겠다.

Yield Comparisons of Different Methods of Waxy Fraction Extraction from Grain Sorghum

  • Weller, Curtis L.;Hwang, Keum-Taek;Schmidt, Bradley J.
    • Food Science and Biotechnology
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    • 제15권5호
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    • pp.786-791
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    • 2006
  • Three solvent extraction techniques were used to recover waxy tractions from grain sorghum kernels. Yield and chemical composition of the waxy tractions obtained by reflux, bench scale (recirculated solvent), and countercurrent extraction methods were compared. Waxy traction yield from countercurrent extraction (0.200%) was significantly greater (p<0.05) than the yields of wax from both reflux (0.184%) and bench-scale (0.179%) methods. The waxy traction extracted using the bench-scale method showed the greatest relative amount of long-chained (primarily C:28 and C:30) alcohols while the countercurrent-extracted wax showed the greatest relative amount of long-chained fatty acids and fatty aldehydes. Countercurrent extraction removed a higher additive percentage of fatty aldehydes, acids, and alcohols than reflux or bench-scale extraction method.

Extension of Shelf Life of Kimchi by Addition of Encapsulated Mustard Oil

  • Kim, Mi-Jeong;Ha, Jee-Yun;Yun, Ye-Rang;Noh, Jeong-Sook;Song, Yeong-Bok;Song, Yeong-Ok
    • Food Science and Biotechnology
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    • 제15권6호
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    • pp.884-888
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    • 2006
  • In this study, we have attempted to characterize the effects of encapsulated mustard oil with regard to the extension of the shelf life of kimchi. The quantity of mustard oil or encapsulated mustard oil added to the brined cabbage in this study was 0.05%(w/w). Overall, the fermentation processes in the encapsulated mustard oil-added kimchi (EMO) and mustard oil-added kimchi (MO) occurred at a slower rate than in the controls. The periods during which the MO and EMO kimchi samples were edible were prolonged for more than two weeks, according to measurements of pH, total acidity, and microbial changes. The overall acceptability of EMO was superior to MO throughout the entirety of the fermentation period. Sensory evaluation verified that EMO yielded a more favorable product than the MO and control varieties. Encapsulated mustard oil can be employed as a natural food additive to prolong the shelf life of kimchi, via an induced delay of the fermentation process.

Antimicrobial Activity of Hibiscus sabdariffa L. (Roselle) Powder against Food-Borne Pathogens Present in Dairy Products: Preliminary Study

  • Lim, Hyun-Woo;Seo, Kun-Ho;Chon, Jung-Whan;Song, Kwang-Young
    • Journal of Dairy Science and Biotechnology
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    • 제38권1호
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    • pp.37-44
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    • 2020
  • The antimicrobial activity of the ethanol extract of Hibiscus sabdariffa L. (Roselle) powder against various food-borne pathogens was tested using the lawn diffusion assay. The results showed that the ethanol extract exhibited antimicrobial activities against Staphylococcus aureus (total inhibition), Salmonella enteritidis (partial inhibition), Listeria monocytogenes (partial inhibition), Escherichia coli (partial inhibition), Cronobacter sakazakii (partial inhibition), and Bacillus cereus (partial inhibition). Therefore, it is strongly recommended that Hibiscus sabdariffa L. (Roselle) should be considered for use as a natural food-grade additive for the inhibition of various food-borne pathogens, including both gram-positive and gram-negative pathogens, and the improvement of the overall quality of various dairy products, including milk.

Dietary addition of a standardized extract of turmeric (TurmaFEEDTM) improves growth performance and carcass quality of broilers

  • Johannah, NM;Ashil, Joseph;Balu, Maliakel;Krishnakumar, IM
    • Journal of Animal Science and Technology
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    • 제60권5호
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    • pp.8.1-8.9
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    • 2018
  • Background: Indiscriminate use of antibiotics in livestock and poultry farming has caused emergence of new pathogenic strains. The situation has warrented the development of safe and alternative growth promoters and immunity enhancers in livestock. Herbal additives in animal and bird feed is a centuries-old practice. Thus, the present study investigated the efficacy of a standardized formulation of lipophilic turmeric extract containing curcumin and turmerones, (TF-36), as a natural growth promoter poultry feed additive. Methods: The study was designed on 180 one-day old chicks, assigned into three groups. Control group ($T_0$) kept on basal diet and supplemented groups $T_{0.5}$ and $T_1$ fed with 0.5% and 1% TF-36 fortified basal diet for 42 days. Each dietary group consisted of six replicates of ten birds. Body weight, food intake, food conversion ratio, skin colour, blood biochemical analysis and antioxidant status of serum were investigated. Results: Body weight improved significantly in $T_1$ with a 10% decrease in FCR as compared to the control. TF-36 supplementation in $T_1$ enhanced the antioxidant enzyme activity significantly (p < 0.05) with a decrease (p < 0.05) in lipid peroxidation. It also caused a slight yellow skin pigmentation without any change in meat color, indicating the bioavailability of curcumin from TF-36. However, no significant change in the concentration of serum creatinine, total protein and liver enzyme activities were observed, indicating the safety. Conclusion: In summary, we concluded that TF-36 can be a natural feed additive to improve growth performance in poultry, probably due to the better antioxidant activity and antimicrobial effects contributed by the better bioavailability of curcuminoids and turmerones. Besides, curcuminoids and turmerones were also known to be gastroprotective and anti-inflammatory agents.

Antioxidant activities of licorice-derived prenylflavonoids

  • Kim, Hyo Jung;Seo, Ji-Yeon;Suh, Hwa-Jin;Lim, Soon Sung;Kim, Jong-Sang
    • Nutrition Research and Practice
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    • 제6권6호
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    • pp.491-498
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    • 2012
  • Glycyrrhiza uralensis (or licorice) is a widely used Oriental herbal medicine from which the phenylflavonoids dehydroglyasperin C (DGC), dehydroglyasperin D (DGD), and isoangustone A (IsoA) are derived. The purpose of the present study was to evaluate the antioxidant properties of DGC, DGD, and IsoA. The three compounds showed strong ferric reducing activities and effectively scavenged DPPH, $ABTS^+$, and singlet oxygen radicals. Among the three compounds tested, DGC showed the highest free radical scavenging capacity in human hepatoma HepG2 cells as assessed by oxidant-sensitive fluorescent dyes dichlorofluorescein diacetate and dihydroethidium bromide. In addition, all three compounds effectively suppressed lipid peroxidation in rat tissues as well as $H_2O_2$-induced ROS production in hepatoma cells. This study demonstrates that among the three phenylflavonoids isolated from licorice, DGC possesses the most potent antioxidant activity, suggesting it has protective effects against chronic diseases caused by reactive oxygen species as well as potential as an antioxidant food additive.

참조기 천연색소의 분리 및 판별법에 관한 연구 (Studies on the Separation and Discrimination of the Natural Yellow Pigment on Croaker)

  • 김희연;홍기형;홍진환;김동술;한상배;이은주;이정성;강길진;정형욱;송경희;박종석;권용관;장영미;신일식;이창국;박희열;하상철;조재선;박혜경
    • 한국식품과학회지
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    • 제34권5호
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    • pp.762-769
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    • 2002
  • 참조기 추출색소를 컬럼크로마토그래피를 행하여 정제하고 UV-vis spectrophotometry를 행하여 최대 흡수파장을 검색한 결과는 모든 획분의 최대 흡수파장은 $480\;nm{\sim}420\;nm$ 사이에 공통적으로 3개의 최대흡수대역을 나타냈다. 이는 carotenoid의 일반적인 특성과 일치하였으며 파장의 대역도 유사하여 carotenoid계 색소로 추정되었다. 또한 획분 간에 파장의 대역이 큰 차이 없이 유사한 것은 구조가 비슷한 이성체이기 때문으로 추정된다. 이동상 A인 0.1 mol 암모늄아세테이트 용액 메탄올(50 : 50 v/v)과 이동상 B인 메탄올 : 메틸렌클로라이드(90 : 10 v/v)를 이용하고 처음 2분간 10%의 이동상 A로부터 시작하여 60분 동안 이동상 B로 점차 조성을 변화시켜 최종적으로 이동상 B가 되게 gradient mode 조건으로 한 이동상에서 PDA-HPLC를 이용하여 참조기 추출색소를 분석한 chromatogram은 각각 RT값이 27.54, 28.48, 29.40, 29.72. 30.06, 35.61에서 총 6개의 peak가 검출되었다. 이때의 검출파장은 약 $380{\sim}490\;nm$ 사이의 파장이었으며, RT값이 30.06와 35.61 사이에 한 개의 peak가 보였으나 그 양이 너무 적어 peak로 인식되지 않았다. 그러나 이는 UV-vis spectrophotometry를 이용한 추출색소의 최대 흡광도 대역과 거의 일치하여 색소의 조성은 총 7개의 성분인 것으로 사료된다. 본 실험의 결과 참조기 추출색소의 분석을 위한 최적파장은 450 nm인 것으로 사료된다. 이동상 B인 메탄올 : 메틸렌클로라이드(90 : 10 v/v)을 이용하여 isocratic made로 한 이동상의 조건으로 PDA-HPLC를 이용하여 참조기 추출색소를 분석한 chromatogram은 각각 RT값이 3.27, 7.69, 20.92에서 총 3개의 peak가 검출되었고, 이때의 검출파장은 약 $380{\sim}490\;nm$ 사이의 파장으로서 gradient mode로 한 이동상의 조건과 일치하였다. 또한 RT값이 3.27의 peak에서 가장 많은 색소가 검출되었다. 그러나 gradient mode로 한 이동상의 조건에서 7개의 peak가 검출되었고 isocratic mode로 한 이동상의 조건에서는 3개의 peak가 검출된 것으로 보아 정성적으로는 gradient mode로 한 이동상의 조건이 더 적합한 것으로 사료된다. 또한, PDA-HPLC를 이용한 참조기와 수조기의 색소성분을 비교한 결과, 수조기와 참조기에서 검출되는 peak중 각각의 3개의 peak는 유사한 RT값을 보였으나, 참조기 및 수조기의 각각 1개의 peak는 서로 다른 RT값을 보였으며 참조기 성분의 peak중 RT = 31.02는 수조기 성분에서는 발견되지 않아, 이 성분은 참조기 성분과 연관성이 클 것으로 사료된다.

Changes in Quality Characteristics of Fresh Pork Patties Added with Tomato Powder during Storage

  • Kang, Suk-Nam;Jin, Sang-Keun;Yang, Mi-Ra;Kim, Il-Suk
    • 한국축산식품학회지
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    • 제30권2호
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    • pp.216-222
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    • 2010
  • This study was carried out to determine the effects of olive oil prepared tomato powder (OPTP) used as lycopene source on fresh pork patties. OPTP was not added (0%; C), or was added at 0.25% (T1), 0.5% (T2), 0.75% (T3) and 1.0% (T4) in a basic pork patty formula and patties were stored for 7 days at $5^{\circ}C$. pH values of T3 and T4 were lower (p<0.05) than those of control until storage day 3. However, pH values of treated samples were dramatically increased (p<0.05) after 7 d of storage. Cooking loss values of treatments were lower (p<0.05) than those of control at day 1 of storage. Thiobarbituric acid reacting substances values were lower (p<0.05) in all treatments than in untreated samples during storage. All treated samples had lower values (p<0.05) for lightness ($L^*$) but significantly higher values (p<0.05) for redness ($a^*$) and yellowness ($b^*$) than the untreated samples during storage. Total plate counts of T4 were lower (p<0.05) than others during storage. In sensory evaluation, the scores of color, aroma and overall acceptability in T3 and T4 scored higher (p<0.05) than those of control at days 1 and 3 of storage, however, statistical significance was not found (p>0.05) among the samples after 7 days of storage. In conclusion, tomato powder-treated groups were significantly higher in redness ($a^*$) and yellowness ($b^*$), and lipid oxidation was inhibited, as compared with control during storage. Therefore, as a natural additive, tomato powder could be used to extend the self-life of meat products, providing the consumer with food containing natural additives, which might be seen more healthful than those of synthetic origin.

닭고기 저장 동안 천연첨가물에 의한 병원성 미생물 억제 효과 (Inhibitory Effects of Natural Additives on Pathogenic Microorganisms Growth during Storage of Commercial Chicken)

  • 이막순;김승혜;문소희;김양하
    • 한국식품과학회지
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    • 제47권5호
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    • pp.574-578
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    • 2015
  • 본 연구의 목적은 닭고기의 저장 기간 동안 천연 첨가물에 의한 병원성 미생물 생장 억제 효과를 조사하기 위함이다. 닭고기 저장기간 동안 천연 첨가물에 의한 병원성 미생물 억제 효과를 조사하기 위하여 닭고기의 껍질 표면에 천연 첨가물을 단독 혹은 배합하여 처리하였다. 병원성 미생물은 닭고기 냉장 저장기간중에 위생과 안전성에 영향을 미치는 부패세균인 S. Typhimurium 및 P. aeruginosa를 사용하였다. 천연첨가물은 키토산, EGCG, 마늘을 각각 2% 농도로 시료 표면에 처리한 다음 $4^{\circ}C$ 냉장 조건하에서 12일 동안 6일 간격으로 2번에 걸쳐 병원성 미생물 억제효과를 관찰하였다. 각각의 병원성 미생물의 생장 억제 효과는 키토산, EGCG 및 마늘을 단독 혹은 두 가지 배합 처리한 것보다 세 가지 배합 처리한 것이 처리 시간별로 훨씬 더 높은 미생물 억제 효과를 나타내었다. 이 결과들은 키토산, EGCG와 마늘을 포함하는 세 가지 배합된 천연첨가물이 닭고기의 저장 동안 병원성 세균 생장 억제를 위한 천연첨가제로 유용하게 사용될 수 있음을 시사하고 있다. 아울러 본 연구 결과들은 천연첨가물을 이용한 유해 미생물 제어 기술 개발을 위한 기초 자료로 사용될 수 있을 것으로 기대된다.

Cloning, Characterization, and Production of a Novel Lysozyme by Different Expression Hosts

  • Zhang, Haifeng;Fu, Gang;Zhang, Dawei
    • Journal of Microbiology and Biotechnology
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    • 제24권10호
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    • pp.1405-1412
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    • 2014
  • Lysozyme is a protein found in egg white, tears, saliva, and other secretions. As a marketable natural alternative to preservatives, lysozyme can act as a natural antibiotic. In this study, we have isolated Bacillus licheniformis TIB320 from soil, which contains a lysozyme gene with various features. We have cloned and expressed the lysozyme in E. coli. The antimicrobial activity of the lysozyme showed that it had a broad antimicrobial spectrum against several standard strains. The lysozyme could maintain efficient activities in a pH range between 3 and 9 and from $20^{\circ}C$ to $60^{\circ}C$, respectively. The lysozyme was resistant to pepsin and trypsin to some extent at $40^{\circ}C$. Production of the lysozyme was optimized by using various expression strategies in B. subtilis WB800. The lysozyme from B. licheniformis TIB320 will be promising as a food or feed additive.