This study was carried out to investigate the effect of liposome-coated salt (LCS) on the salty taste intensity of noodle. Dough, dried noodle, and boiled noodle with LCS were evaluated physico-chemically for water content, water binding capacity, solubility, swelling power, color, texture, cooking properties, and sensory test. There were no significant differences in water content, water binding capacity, lightness, yellowness, and texture of noodle between the noodles with liposome-coated salt and non-coated salt. For the sensory analysis, the panel did detect more salty taste at 1.0% and 2.0% of LCS compared to the control. From these results, this study demonstrates that liposome coated salt can enhance salty taste, maintaining the same salt concentration without the physical property changes of noodle.

The objective is to investigate effect of liposome coated hemicellulose on softening of carrot. To encapsulate hemicellulose in nanoliposome, 2% hemicellulase and 2% lecithin were processed by using high-speed homogenizer (10,000 rpm, 3 min) and ultrasonification (200 W, 54%). The carrot were cut into cylinder type (3×1 cm) and then immersed in distilled water (DW, control), hemicellulase (He) and nanoliposome coated hemicellulose (He/NL) for 48 h at 4oC. The final concentration of hemicellulose is 1% (w/v). The droplets properties of He, NL, He/NL analyzed using zeta-sizer. Moreover, the carrots treated different immersed solutions were characterized by measuring hardness, color, microstructural observation and enzyme activity (glucose contents). For the results, hardness of carrot immersed in He or He/NL solution decreased after 48 h by 47% or 31% (outline of carrot) and 35% or 31% (center of carrot) respectively compared to control (7,240 g). The total color difference value of all samples increased over immersion time. For microstructural observation, cell was destroyed after 24 h at He solution. For the enzyme activity, glucose contents of carrot in He solution increased than it in He/NL at 0 h sample however the enzyme activity was no significant difference with immersion time.

To investigate the effects of coated liposome from Discorea rhizoma extract (DRE) in streptozotocin (STZ)-induced, we evaluated changes in body weight, fasting blood glucose, blood insulin and blood lipid concentrations in mice. Mice were divided into four groups: (DC), diabetic DRE at 10 ㎎/㎏ (DRE-1), diabetic DRE at 50 ㎎/㎏ (DRE-2), and diabetic DRE at 250 ㎎/㎏ (DRE-3). Mice had free access to water and diet (10 weeks). The DC group showed higher blood cholesterol than the DRE-1, DRE-2, DRE-3 groups. In glucose tolerance test, the DRE-1, DRE-2, and DRE-3 groups increased after 30 minutes in decremental glycemic response area under the curve. Fasting blood glucose levels in the DRE groups significantly decreased through 4 weeks. Plasma total cholesterol, triglyceride and LDL-cholesterol concentrations were also lower in the DRE groups. On the other hand, the DRE-1, DRE-2 and DRE-3 groups showed higher HDL-cholesterol and insulin levels than the DC group. Moreover, blood glucose and lipid levels significantly decreased in streptozotocin (STZ)-induced diabetic mice treated with DRE. These results indicate that DRE may reduce elevated blood glucose levels and serum lipid concentrations in hypoglycemic and diabetic mice, suggesting its usefulness as a functional food.