Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Preparation of Sea Urchin Skeleton Film Containing Robinia pseudoacacia Flower Extract

아까시 꽃 추출물을 첨가한 성게 껍질 필름의 제조

  • Yang, Hyun-Ju (Department of Food Science and Technology, Chungnam National University) ;
  • Song, Kyung Bin (Department of Food Science and Technology, Chungnam National University)
  • Received : 2016.01.19
  • Accepted : 2016.03.10
  • Published : 2016.05.31
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Abstract

Sea urchin skeleton (SUS) generated from production of sea urchin eggs was used as a biodegradable film base material, and its composite film with gelatin was prepared. In addition, Robinia pseudoacacia flower extract (RFE) was incorporated into the film-forming solution to provide antioxidant and anti-microbial activities. The tensile strength (TS) of the SUS/gelatin composite films increased with increasing gelatin content, whereas elongation at break (E) decreased. Among the composite films, SUS/gelatin film at a ratio of 8:2 (w/w) exhibited the most desirable TS and E values. Furthermore, SUS composite film containing RFE showed a reduced TS and increased E compared to the control film. Based on 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) and 2,2-diphenyl-1-picrylhydrazyl radical scavenging assays and disc diffusion results against growth of Listeria monocytogenes, antioxidant and anti-microbial activities of films increased with increasing RFE concentration. Consequently, SUS composite film containing RFE showed proper physical properties as well as antioxidant and anti-microbial activities. These results indicate that SUS can be used as a film base material while the SUS composite film containing RFE can be utilized as active packaging.

본 연구에서는 폐기되는 성게 껍질을 이용한 생분해성 필름소재를 개발하고자 gelatin을 첨가한 복합필름 및 항산화, 항균성을 부여하기 위해 아까시 꽃 추출물(RFE)을 첨가한 필름을 제조하였다. 그 결과 gelatin 비율이 증가함에 따라 성게 껍질 필름의 인장강도가 증가하였고 신장률이 감소하였으며, 성게 껍질과 gelatin을 8:2 비율로 첨가하였을 때 최적의 물성을 보였다. 또한, 필름에 RFE를 첨가함에 따라 인장강도는 감소하였으나 신장률과 필름 투습도는 증가하였다. RFE 함유 성게 껍질 필름의 ABTS, DPPH 라디칼 소거능 측정과 디스크 확산법을 이용하여 항산화 및 항균 능력을 측정하였는데, RFE 농도가 증가함에 따라 항산화, 항균 능력이 향상하였다. 따라서 본 연구 결과, RFE를 첨가한 생분해 성게 껍질 필름은 적절한 물성과 함께 항산화, 항균 능력이 있기에 가공식품의 저장성을 증대시킬 수 있는 기능성 포장 소재로의 활용이 가능하다고 판단된다.

Keywords

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