Thesis
Genotype x environment interactions on [beta]-glucan in barley (Hordeum vulgare L.) and end-use quality of whole seed quinoa (Chenopodium quinoa Willd.) flour
Washington State University
Master of Science (MS), Washington State University
2019
Handle:
https://hdl.handle.net/2376/100324
Abstract
Barley and quinoa are both popular for a nutritional component found in their seeds. [Beta]-glucan is a dietary fiber found in barley that has potential as a treatment for diabetes and other cardiovascular related health issues; it has previously shown promise for regulating blood cholesterol in humans. Quinoa is claimed as a sustainable source of protein. It is held in particularly high regard among plant proteins for averaging high enough contents of the nine essential amino acids to be considered a complete protein. [Beta]-glucan fiber is a characteristic of interest for the food and malt industries in the United States due to its potential as an immunostimulant and its possible negative effects in brewing equipment. We assessed the stability and range of [beta]-glucan content across multiple rainfall zones and barley cultivars to gain insight on what farmers in different growing regions could expect in their grain. In chapter two, we evaluated end-use quality of two popular U.S. grown quinoa varieties ('Antique White' and 'Tricolor') by assessing their change in volume and texture for pan breads and hearth breads, their spread ability and viscosity in pancakes and batter, and their perception by consumers in pancake form. Increased substitutions of whole seed quinoa flour decreased the volume of pan breads, the spread ability of pancakes, and the viscosity of pancake batter. Thirty percent substitutions of whole seed quinoa flour did not have significantly different hearth bread volumes from the refined wheat controls. Pancakes with Antique White flour substitutions had high consumer acceptance as did the wheat control pancake. Pancakes with Tricolor flour substitutions had lower consumer acceptance in some categories including texture and overall liking. Jointly these studies expand the wealth of information on crop nutrition and varietal product development, and increase opportunities for healthy, delicious industrial endeavors.
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Details
- Title
- Genotype x environment interactions on [beta]-glucan in barley (Hordeum vulgare L.) and end-use quality of whole seed quinoa (Chenopodium quinoa Willd.) flour
- Creators
- Halle Marie Choi
- Contributors
- Kevin Murphy (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Crop and Soil Sciences, Department of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; [Pullman, Washington] :
- Identifiers
- 99900525051101842
- Language
- English
- Resource Type
- Thesis