Theses and Dissertations

Issuing Body

Mississippi State University

Advisor

Tidwell, K. Diane

Committee Member

Hood, F. Anna

Committee Member

Briley, A. Chiquita

Committee Member

Schilling, M. Wes

Committee Member

Coggins, C. Patti

Other Advisors or Committee Members

Harkess, L. Richard

Date of Degree

5-1-2010

Document Type

Dissertation - Open Access

Major

Nutrition

Degree Name

Doctor of Philosophy (Ph.D)

College

College of Agriculture and Life Sciences

Department

Department of Food Science, Nutrition and Health Promotion

Abstract

Kudzu (Pueraria lobata) is an edible vine from the legume family native to China but growing prolifically throughout the southeastern United States. Legumes are abundant in the beneficial compounds phytoestrogens, specifically isoflavones. This research analyzed Mississippi-grown kudzu roots, leaves, and flowers for antioxidant activity and total phenolic content and evaluated consumer acceptability of food products containing kudzu. Results indicated kudzu flowers, roots, and leaves contained phenolic compounds and the antioxidant activity amounts in flowers, roots, and leaves were 77.9%, 75.7%, and 56.5%, respectively. The dip products that were developed and evaluated were mayonnaise- and sour cream-based dips that contained either dried kudzu leaves or dried spinach and other seasonings. Healthier versions of dip products were developed using light mayonnaise and light sour cream and omitting salt. Consumer sensory panels evaluated appearance, aroma, flavor, texture, and overall acceptability of the dip samples using a 9-point hedonic scale. A randomized complete block design with three replications was used to determine if differences (p<0.05) in consumer acceptability existed among treatments. On average, the regular spinach dip was moderately liked and preferred (p<0.05) over the other dips. The regular kudzu dip was moderately liked and preferred (p<0.05) over the healthier kudzu and spinach dips. Cluster analysis partitioned consumers into five groups based on preference and acceptability of vegetable dips. Results indicated 39% of panelists rated the dips at like very much and did not differ (p>0.05) in their liking of dips, 42% preferred (p<0.05) the regular spinach dip and 50% liked all vegetable dips. A kudzu blossom jelly product was developed using kudzu flower liquid, sugar, pectin, and lemon juice. Consumer sensory panels evaluated the prepared jelly product, a purchased kudzu jelly, and a purchased scuppernong jelly. A randomized complete block design with three replications was used to determine if differences (p<0.05) in consumer acceptability existed among jellies. The purchased kudzu jelly was preferred (p<0.05) for overall acceptability (like moderately) compared to the prepared kudzu and scuppernong jelly, which were rated similarly between like slightly and like moderately.

URI

https://hdl.handle.net/11668/15029

Download

Share

COinS