Su Young Hong

Anti-inflammatory effects of flavonoids in Korean Chrysanthemum species via suppression of inducible nitric oxide synthase and cyclooxygenase-2 in LPS-induced RAW 264.7 macrophages

This study was conducted to compare flavonoids and anti-inflammatory effects in Korean Chrysanthemum species. Leaf samples were identified using HPLC/MS with five flavonoids: luteolin-7-O-rutinoside, luteolin-7-O glucoside, apigenin-7-O-glucoside, apigenin, and acacetin-7-O-rutinoside. Leaf extracts from four taxa dose-dependently suppressed LPS-stimulated NO production significantly (p<0.05) inhibited production of LPS-induced PGE2 compared with controls. The extracts reduced the LPS-induced expressions of inducible NO synthase and cyclooxygenase-2 and inhibited LPS-induced tumor necrosis factor-α and interleukin-6 production for anti-inflammatory effects.

Quality Characteristics Influenced by Different Packaging Materials in Washed Potatoes through an Integrated Washing System

This study was performed to investigate the effect of packaging materials on quality characteristics of washed potatoes such as Hunter’s a value, chlorophyll and potato glycoalkaloids (PGA) content during their storage for 15 days. Packaging methods were evaluated into five ways: no packaging (NP, positive control), paper bag (PB, negative control), onion net (ON), transparent oriented to polypropylene without hole (TP), opaque oriented polypropylene with 4 holes (OP). Hunter’s a values of washed potatoes showed minus in NP and TP after 12 days storage, whereas all plus values were observed in those of PB, ON, and OP. Total chlorophyll content of washed potatoes was the highest in no packaging at 15 days after storage. The PGA content of washed potatoes showed low levels in flesh part (below 5 mg/100 g · FW) as well as in peel part (4.5-9.3 mg/100 mg · FW) in all packagings up to 15 days after storage.