• Title/Summary/Keyword: foof culture

Search Result 2, Processing Time 0.024 seconds

Food Culture of Korean Peninsula in the Neolithic Period Described in Daegok-ri Petroglyph (대곡리 암각화(大谷里 岩刻畵)에 나타난 신석기시대 한우도(新石器時代 韓牛島)의 식생활문화(食生活文化))

  • Koh, Kyung-Hee
    • Journal of the Korean Society of Food Culture
    • /
    • v.21 no.6
    • /
    • pp.606-613
    • /
    • 2006
  • The present study examined the characteristic of regional food culture observed in prehistoric Daegok-ri petroglyph based on the history of art, archeological materials and existing whale eating customs. Daegok-가 petroglyph expressed animals in the sky, on the land and in the sea. According to the relic, the most preferred land and marin animals were deer and whale, respectively. In terms of petroglyphic techniques. earlier patch engraving was used mainly to express marin animal whale, and later line engraving to express land animal deer. This implies the possibility that as whale hunting declined due to regional environmental change the source of protein was switched to land animals. Among relics found in Dongsam-dong shell mound, which is a remain from the Neolithic Period, whale bones appear only in shell mounds of the Neolithic Period in coastal areas, and shell mounds until the Ironze Age, which were the agricultural Age, were found the bones of land animals such as deer and wild boar. This shows that in the petroglyph thematic land animals expressed in line engraving, which is a technique later than patch engraving, were major food resources for the supply of protein. Moreover, in terms of art, Daegok-ri petroglyph describes 'advanced hunters', suggesting that it was the Neolithic Period and showing 문 aspect of regional food culture based on hunting and fishing. The credibility, which prehistoric men expressed in Daegok-ri petroglyph before the invention of letters, was also proved by archeological articles.

Optimizing Conditions for Streptomyces chibaensis J-59 Glucose Isomerase Production Using Response Surface Methodology (반응표면분석에 의한 방선균 Streptomyces chibaensis J-59 포도당 이성화효소의 생산 최적화)

  • Joo, Gil-Jae;Park, Heui-Dong
    • Current Research on Agriculture and Life Sciences
    • /
    • v.14
    • /
    • pp.101-110
    • /
    • 1996
  • Using response surface methodology(RSM), the various conditions(agitation speed, air flow, glucose concentration) in jar fermentor culture were investigated to find the optimum conditions for maximum enzyme production. Central-composite-design was used to control the variable constant in the experiment. The glucose isomerase production of Steptomyces chibaensis J-59 was mostly affected by the air flow rate and glucose concentration. The estimated optimum conditions were as follows: 1% birchwood xylan, 1.5% CSL, 0.1% $MgSO_4{\cdot}7H_2O$, 0.012% $CoCl_2{\cdot}6H_2O$, pH 7.0; air flow, 2.2vvm; agitation speed, 587rpm; glucose concentration, 0.586%. Experimental values(7.43GIU/ml) for the enzyme production obtained from the given optimum conditions had a almost resemblane to response values(7.67GIU/ml) predicted by the RSM. The jar fermentor culture by the RSM produced xylose isomerase about 2.7 times as much as the baffled flask culture.

  • PDF