Antimicrobial Activity of Yacon K-23 and Manufacture of Functional Yacon Jam

야콘 K-23의 항균성 및 기능성 야콘잼의 제조

  • Kim, Young-Sook (Department of Oriental Medical Food and Nutrition, Asia University)
  • 김영숙 (아시아대학교 한방식품영양학과)
  • Published : 2005.12.31

Abstract

Yacon (Polymnia sonchifolia Poepping & Endlicher), which contains fructo-oligosaccharide, is low calorie functional food. Yacon is efficacious against cholesterol, obesity, and diabetes. Yacon K-23 has antibacterial activity against Gram-positive (Listeria monocytogenes KCTC 3710 and Staphylococcus aureus KCTC 1927) and negative (Salmonella typhimurium KCTC 2514, Escherichia coli KCCM 11591, Proteus vulgaris KCTS 2512, and Pseudomonas aeruginosa KCCM 11803), Yacons A (water extract) and B (crushed juice) showed clear zone of 10mm, while Cassiae Semen, Acanthopanacis Cortex, Angelica gigas showed 7-10mm. Yacon jam showed good sensory attributes, suggesting it could be utilized as food ingredient. Hardness, adhesiveness, and strength of strawberry jam with or without aloe vera were higher than those of yacon jam with or without aloe vera.

식중독 원인균에 대해 결명자(Cassiae semen), 가시오가피(Acanthopanacis cortex), 당귀(Angelica gigas)는 $7{\sim}10mm$의 항균력을 나타내었으며, 야콘 추출물은 10mm의 항균력을 나타내었다. 특히 Staphylococcus aureus KCTC 1927에 대해서는 사용한 약재 성분들이 전반적으로 높은 항균활성을 나타내었다. 또한 야콘 잼을 제조한 결과, 연초록색의 상품가치가 높은 맛있는 잼을 얻을 수 있었다. 관능평가에 있어서 야콘잼은 조직감이 우수하여 딸기잼 보다 높게 평가되었으며 또한 색도 우수한 것으로 평가되었다. 잼의 견고성과 젤 강도는 딸기, 딸기+알로에 베라, 야콘+알로에 베라, 야콘 잼의 순서로 나타났고, 이는 oligosaccharide 첨가의 영향이라 볼 수 있다. 야콘 잼의 기능성과 효능을 감안해 볼 때 앞으로 일반화되면 소비자의 선호도가 높을 것으로 추측되며, 비만과 당뇨병 환자도 안심하고 섭취할 수 있는 기능성 식품이라고 생각된다.

Keywords

References

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