Journal article
Quinoa Starch Characteristics and Their Correlations with the Texture Profile Analysis (TPA) of Cooked Quinoa
Journal of food science, Vol.82(10), pp.2387-2395
10/2017
Handle:
https://hdl.handle.net/2376/109773
PMID: 28869289
Abstract
Starch characteristics significantly influence the functionality and end-use quality of cereals and pseudo-cereals. This study examined the composition and properties of starch from 11 pure varieties and 2 commercial samples of quinoa in relationship to the texture of cooked quinoa. Nearly all starch properties and characteristics differed among these samples. Results showed that total starch content of seeds ranged from 53.2 to 75.1 g/100 g apparent amylose content ranged from 2.7% to 16.9%; total amylose ranged from 4.7% to 17.3%; and the degree of amylose-lipid complex ranged from 3.4% to 43.3%. Amylose leaching ranged from 31 mg/100 g starch in "Japanese Strain" to 862 mg/100 g starch in "49ALC." "Japanese Strain" starch also exhibited the highest water solubility (4.5%) and the lowest swelling power (17). α-Amylase activity in "1ESP," "Col.#6197," "Japanese Strain," "QQ63," "Yellow Commercial," and "Red Commercial" (0.03 to 0.09 CU) were significantly lower than the levels of the other quinoa samples (0.20 to 1.16 CU). Additionally, gel texture, thermal properties, and pasting properties of quinoa starches were investigated. Lastly, correlation analysis showed that the quinoa samples with higher amylose content tended to yield harder, stickier, more cohesive, more gummy, and more chewy texture after cooking. A higher degree of amylose-lipid complex and amylose leaching were associated with softer and less chewy cooked quinoa TPA texture. Higher starch enthalpy correlated with firmer, more adhesive, more cohesive, and chewier texture. In sum, starch plays a significant role in the texture of cooked quinoa.
The research determined starch characteristics among a diverse set of pure quinoa varieties and commercial samples, and identified the relationships between starch properties and cooked quinoa texture. The results can help breeders and food manufacturers to understand better the relationships among quinoa starch characteristics, cooked quinoa texture, and the best use of different cultivars.
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Details
- Title
- Quinoa Starch Characteristics and Their Correlations with the Texture Profile Analysis (TPA) of Cooked Quinoa
- Creators
- Geyang Wu - School of Food Science, Washington State Univ., Pullman, WA, 99164, U.S.ACraig F Morris - USDA-ARS Western Wheat Quality Laboratory, E-202 Food Quality Building, Washington State Univ., Pullman, WA, 99164, U.S.AKevin M Murphy - Dept. of Crop and Soil Sciences, Washington State Univ., Pullman, WA, 99164, U.S.A
- Publication Details
- Journal of food science, Vol.82(10), pp.2387-2395
- Academic Unit
- Crop and Soil Sciences, Department of
- Publisher
- United States
- Identifiers
- 99900547283101842
- Language
- English
- Resource Type
- Journal article