Biofouling in brackish water reverse osmosis (RO) membranes still needs extensive research to understand cause and mechanism and to obtain methods for reduction of its impact on RO applications. Natural compounds with biofilm formation inhibitory properties are being investigated. Two compounds, vanillin and Epigallocatechin gallate (EGCG), were selected due to their great potential on biofilm formation inhibition. Vanillin shows inhibition on quorum sensing mechanisms of biofilm formation. EGCG has potential to inactivate microbial activity. The two compounds were incorporated in typical polyamide reverse osmosis membranes and evaluated on flux behaviours and biofilm formation potential. The surface properties of membrane coated with vanillin were changed tremendously compared to those with EGCG. As a result, the flux was reduced substantially. The biofilm formation seems hindered with EGCG coated membranes compared to the virgin membranes. More research is needed to optimize coating methods applicable to RO membranes and to enhance biofouling reduction.

신선절단 사과 제조에 있어 갈변 및 연화 억제제인 처리에 고농도 vanillin의 첨가효과를 규명하기 위하여, 절단사과에 6% 과 120 mM vanillin을 병용처리하고 플라스틱 필름으로 포장하여 에서 3주 동안 저장하면서 1주 간격으로 품질특성과 미생물 생육의 변화를 조사하였다. 신선절단 사과의 L값, 가용성 고형분 및 적정산도는 단독 처리구 보다 과 vanillin의 병용 처리구에서 감소가 촉진되었다. 총호기성미생물 및 효모와 곰팡이의