• 제목/요약/키워드: sesame protein Isolates

검색결과 6건 처리시간 0.017초

참깨와 들깨 단백질의 기능성에 관한 연구 (Studies on the Functional Properties of Sesame and Perilla Protein Isolate)

  • 박현숙;안빈;양차범
    • 한국식품과학회지
    • /
    • 제22권3호
    • /
    • pp.350-356
    • /
    • 1990
  • 참깨와 들깨 단백질을 알칼리에서 추출시킨 후 참깨는 pH6.0, 들깨는 pH4.0에서 침전시켜 분리 단백질을 제조하여 그들의 기능성 즉, 용해도, 유화성, 기포성, 유지 및 수분 흡착력 등을 pH와 염농도를 달리하여 측정하였다. 단백질 용해도는 참깨 단백질이 pH6.0에서, 들깨와 대두 단백질은 pH4.0에서 가장 낮아 등전점을 보이었고, pH2.0과 pH8.0 이상에서는 크게 증가하였다. 0.1M NaCl 첨가시에는 참깨 단백질과 들깨 단백질의 경우 전 pH 범위에서 단백질 용해도가 증가하였다. 유화력은 각 시료 단백질의 등전점 부근에서 가장 낮았으며 0.1M NaCl 첨가시에는 모든 시료들의 유화력이 증가되었으나 0.5M NaCl 농도에서는 오히려 감소되는 경향이었다. 유화안정성은 유화력과 비슷한 크기로 나타나, $80^{\circ}C$에서 30분 가열에서도 이들 단백질이 열에 안정함을 보이었다. 기포 형성력은 참깨와 들깨 단백질이 대두 단백질에 비해 현저히 낮았으며, 0.1M NaCl과 0.5M NaCl 첨가시에는 모두 그 값이 증가되는 경향을 보이었다. 기포 안정성은 대두 단백질이 10분 이내에 크게 감소된 반면 참깨와 들깨 단백질은 30분까지 완만하게 감소하였다. 유지 흡착력은 들깨 단백질이 가장 높은 값을 보였고, 수분 흡착력은 시료간에 차이가 없었다.

  • PDF

볶음온도가 참깨 분리단백질의 항영양인자와 기능성에 미치는 영향 (Effects of Roasting Temperature on the Antinutrients and Functional Properties of Sesame Protein Isolates)

  • 김진;박정륭;전정례
    • 동아시아식생활학회지
    • /
    • 제9권4호
    • /
    • pp.435-441
    • /
    • 1999
  • 본 실험에서는 5$0^{\circ}C$, 10$0^{\circ}C$. 15$0^{\circ}C$. 20$0^{\circ}C$ 온도에서 20분간 가열하여 전처리한 참깨를 압착해서 참기름을 제거한 후 제조한 참깨 분리단백질의 항영양인자인 phytate와 phenolic acid의 함량의 변화와 식품학적인 기능적 특성을 검토하여 다음과 같은 결과를 얻었다. 참깨 분리단백질의 함량은 볶음 온도를 15$0^{\circ}C$로 상승시켰을 때 68.9%, 5$0^{\circ}C$에서의 65.5%에 비해 증가하였으나, 20$0^{\circ}C$에서는 64.1%로 오히려 감소하였고, 총페놀. 축합형 탄닌함량과 phytate함량 5$0^{\circ}C$에서 20$0^{\circ}C$로 볶음온도를 상승시에 유의적으로 증가하였다. 색도는 고온 처리한 참깨박 분리단백질은 L값과 b값은 유의적으로 감소하였고, a값은 20$0^{\circ}C$에서 처리한 경우에 증가하였다. 전반적으로 고온처리시에 짙은 갈색을 띄었으며, 겉보기 밀도와 지방 흡수력 그리고 수분 흡수력은 볶음 온도가 상승함에 따라서 유의적으로 증가하였다. 유화성은 5$0^{\circ}C$에서 15$0^{\circ}C$로 온도가 상승시에 증가하였지만 20$0^{\circ}C$에서 유의적으로 감소하였고, 기포성은 볶음온도에 따라 5$0^{\circ}C$와 10$0^{\circ}C$에서는 기포성의 감소가 크게 나타나지는 않았지만, 15$0^{\circ}C$와 20$0^{\circ}C$에서 현저하게 감소하였다. 기포안정성은 10$0^{\circ}C$에서 가장 높게 나타났으며, 20$0^{\circ}C$에서 볶아서 제조한 참깨 분리단백질에서 가장 낮게 나타났다.

  • PDF

과산화수소, Papain처리 및 Acyl화가 분리참깨박 단백의 품질 및 기능적 성질에 미치는 영향 (Effects of $H_2O_2$ and Papain Treatments, and Acylation on Chemical and Functional Properties of Defatted Sesame Oil Cake Protein)

  • 김성렬;심현숙
    • 한국식품과학회지
    • /
    • 제20권3호
    • /
    • pp.405-411
    • /
    • 1988
  • 참깨박 단백질의 식용화를 목적으로 참깨박에 hydrogen peroxide papain처리 및 아실화가 분리참깨박단백의 품질 및 기능적 성질에 미치는 영향을 검토하였다. hydrogen peroxide papain 및 papain 과 hydrogen peroxide를 병행처리한 경우 alkali처리시보다 참깨박 단백질의 추출율, 분리단백의 단백질 함량이 높았으며 분리 단백의 아미노산 조성은 lysine을 제외한 필수아미노산의 함량이 비교적 우수하였고 분리단백의 색상, 기능적 성질 및 pepsin소화성이 현저히 향상되었다. 또한 아실화에 의하여 제1 제한아비노산인 lysine의 함량증가와 용해도, 용적밀도, 수분흡착도. 지방흡착도 및 유화성이 현저히 개선되었으나 기포성 및 소화성은 약간 저하시키는 경향을 보였다.

  • PDF

Biological Characteristics and Nucleotide Relationships in Korean Tomato spotted wilt virus Isolates

  • Cho, Jeom-Deog;Kim, Jeong-Soo;Kim, Jin-Young;Choi, Gug-Seoun;Chung, Bong-Nam
    • The Plant Pathology Journal
    • /
    • 제25권1호
    • /
    • pp.26-37
    • /
    • 2009
  • Tomato spotted wilt virus (TSWV) was identified from seven plants at two areas, Anyang and Dangjin, in Korea. The isolates of TSWV were seven as TSWV-KATm from tomato, TSWV-KAPo from potato, TSWV-KABal from balsam, TSWV-KACTm from cherry tomato and TSWV-KAIxe from Ixeris dentata at Anyang area, and TSWV-KDSe from sesame and TSWV-KDRP from red pepper at Dangjin area. Pathogenicity of seven TSWV isolates was various on the assay plants, and could not be grouped definitely. Three isolates of TSWV-KAIxe, TSWV-KACTm and TSWV-KABal had relatively narrower host ranges among the seven isolates. Percentage of nucleotide substitution in nucleotide sequences encoding nucleocapsid protein (NCP) was 1.2-1.7% among seven TSWV isolates and TSWV-KP. Korean TSWV isolates were divided into three groups by nucleotide homology or amino acid compositions. From the analysis of nucleotide sequences of Korean TSWV isolates compared with those of TSWV reported from other 5 countries including Japan, the Korean seven isolates of TSWV was grouped with German TSWV (D13926). No Korean TSWV isolates were grouped with those from The Netherlands, Brazil and USA.

IAA-Producing Penicillium sp. NICS01 Triggers Plant Growth and Suppresses Fusarium sp.-Induced Oxidative Stress in Sesame (Sesamum indicum L.)

  • Radhakrishnan, Ramalingam;Shim, Kang-Bo;Lee, Byeong-Won;Hwang, Chung-Dong;Pae, Suk-Bok;Park, Chang-Hwan;Kim, Sung-Up;Lee, Choon-Ki;Baek, In-Youl
    • Journal of Microbiology and Biotechnology
    • /
    • 제23권6호
    • /
    • pp.856-863
    • /
    • 2013
  • Application of rhizospheric fungi is an effective and environmentally friendly method of improving plant growth and controlling many plant diseases. The current study was aimed to identify phytohormone-producing fungi from soil, to understand their roles in sesame plant growth, and to control Fusarium disease. Three predominant fungi (PNF1, PNF2, and PNF3) isolated from the rhizospheric soil of peanut plants were screened for their growth-promoting efficiency on sesame seedlings. Among these isolates, PNF2 significantly increased the shoot length and fresh weight of seedlings compared with controls. Analysis of the fungal culture filtrate showed a higher concentration of indole acetic acid in PNF2 than in the other isolates. PNF2 was identified as Penicillium sp. on the basis of phylogenetic analysis of ITS sequence similarity. The in vitro biocontrol activity of Penicillium sp. against Fusarium sp. was exhibited by a 49% inhibition of mycelial growth in a dual culture bioassay and by hyphal injuries as observed by scanning electron microscopy. In addition, greenhouse experiments revealed that Fusarium inhibited growth in sesame plants by damaging lipid membranes and reducing protein content. Co-cultivation with Penicillium sp. mitigated Fusarium-induced oxidative stress in sesame plants by limiting membrane lipid peroxidation, and by increasing the protein concentration, levels of antioxidants such as total polyphenols, and peroxidase and polyphenoloxidase activities. Thus, our findings suggest that Penicillium sp. is a potent plant growth-promoting fungus that has the ability to ameliorate damage caused by Fusarium infection in sesame cultivation.

DETECTION OF SOY, PEA AND WHEAT PROTEINS IN MILK POWDER BY NIRS

  • Cattaneo, Tiziana M.P.;Maraboli, Adele;Barzaghi, Stefania;Giangiacomo, Roberto
    • 한국근적외분광분석학회:학술대회논문집
    • /
    • 한국근적외분광분석학회 2001년도 NIR-2001
    • /
    • pp.1156-1156
    • /
    • 2001
  • This work aimed to prove the feasibility of NIR spectroscopy to detect vegetable protein isolates (soy, pea and wheat) in milk powder. Two hundred and thirty-nine samples of genuine and adulterated milk powder (NIZO, Ede, NL) were analysed by NIRS using an InfraAlyzer 500 (Bran+Luebbe). NIR spectra were collected at room temperature, and data were processed by using Sesame Software (Bran+Luebbe). Separated calibrations for each non-milk protein added, in the range of 0-5%, were calculated. NIR data were processed by using Sesame Software (Bran+Luebbe). Prediction and validation were made by using a set of samples not included into the calibration set. The best calibrations were obtained by the PLSR. The type of data pre-treatment (normalisation, 1$\^$st/ derivative, etc..) was chosen to optimize the calibration parameters. NIRS technique was able to predict with good accuracy the percentage of each vegetable protein added to milk powder (soy: R$^2$ 0.994, SEE 0.193, SEcv 0.301, RMSEPall 0.148; pea: R$^2$ 0.997, SEE 0.1498, SEcv 0.207, RMSEPall 0.148, wheat: R$^2$ 0.997, SEE 0.1418, SEcv 0.335, RMSEPall 0.149). Prediction results were compared to those obtained using other two techniques: capillary electrophoresis and competitive ELISA. On the basis of the known true values of non-vegetable protein contents, the NIRS was able to determine more accurately than the other two techniques the percentage of adulteration in the analysed samples.

  • PDF