This study investigated grape powder substituted for wheat flour in muffin recipes with the amounts of 0, 5, 10, 15, and 20%. Grape powder consisted of 6.76% of moisture content, 4.63% of crude protein, 4.82% of crude fat and 4.16% of crude ash. DPPH radical scavenging activity is 68.79%, total phenol content is 205.79. Specific loaf volume have decreased as the grape powder content increased. Baking loss have increased as the grape powder content increased. Moisture and brix have increased as the grape powder content increased. pH have increased as the grape powder content decreased. Chromaticity measurement result showed that the ‘L’ and ‘b’ value of muffins decreased as grape powder content increased, whereas ‘a’ value increased. The texture measurement result showed that the hardness, gumminess and chewiness of muffins increased as the grape powder content increased, whereas springiness decreased. Cohesiveness did not show any considerable differences between muffins. Overall preference scores showed high overall acceptability for the muffins made with 10% grape powder

포도주와 포도즙 등 가공품의 생산 후 대량 발생되는 포도 부산물(포도박)의 이용도를 제고하기 위하여 포도박을 조건을 달리하여 추출 농축하여 분말을 제조하여 그 특성을 조사하였다. 물은 용매로 추출한 농축 분말의 경우 가용성 고형물의 함량이나 기능성 성분의 함량이 낮게 나타났으며 카테킨의 경우에서는 에탄올 추출물에서는 검출되지 않은 EGCg를 함유하였다. 에탄올 추출 농축 분말은 가용성 고형물의 함량이 높으며 기능성 성분인 카테킨과 레스베라트롤의