Isolation and characterization of atriplex hortensis and sweet chenopodium quinoa starches

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Permanent URL	http://hdl.lib.byu.edu/1877/2037
Title	Isolation and characterization of atriplex hortensis and sweet chenopodium quinoa starches
BYU Creator	Wright, K. H. Huber, K. C. Fairbanks, Daniel J.
Creator	Huber, C. S.
Keywords	Quinoa; starches
Description/Abstract	Starches from garden orach (Atriplex hortensis) and sweet quinoa (Chenopodium quinoa Willd. "Surumi") seeds were isolated, examined for compositional characteristics, and compared with bitter quinoa (Cheno-podium quinoa Willd.) starch. Garden orach and sweet quinoa seeds were similar in fat and ash contents, while garden orach seeds contained 10% more protein. Starches were isolated from seeds following a 12-hr soak in dilute alkaline solution using a series of grinding, screening, centrifugation, and washing steps. Isolated starches viewed by scanning electron microscopy yielded angular, polygonal granules 2 m in diameter. Starches displayed typical A-type crystalline packing arrangements as determined by X-ray powder diffractometry. Apparent amylose contents for garden orach (21.2%), sweet quinoa (20.6%), and bitter quinoa (19.8%) were determined according to colorimetric procedure. Differential scanning calorimetry data indicated a higher and wider gelatinization temperature range for garden orach as compared with sweet and bitter quinoa starches. Starch pasting profiles generated using a Rapid Visco Analyser indicated a reduced peak paste viscosity for garden orach starch relative to sweet and bitter quinoa and common corn starches.
Source	Wright KH, Huber KC, Fairbanks DJ and Huber CS. 2002. Isolation and characterization of atriplex hortensis and sweet chenopodium quinoa starches. Cereal Chemistry 79(5): 715-719.;
Publisher	American Association of Cereal Chemists
Date Original	2002-10
Language	English eng en
Publication Type	Articles
Type	Text
Format	application/pdf
Owning Institution	Brigham Young University
BYU College	College of Life Sciences
BYU Department	Nutrition, Dietetics, and Food Science
Copyright Status	(c) 2002 AACC International, Inc.;
Copyright Use Information	http://www.lib.byu.edu/generic_copyright.html

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Isolation and characterization of atriplex hortensis and sweet chenopodium quinoa starches

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