Polifenoles totales y flavonoides en diferentes extractos de harinas industriales, a granel y artesanales de quinua (Chenopodium quinoa), kiwicha (Amarantus caudatus) y kañiwa (Chenopodium pallidicaule)
Cast your vote
You can rate an item by clicking the amount of stars they wish to award to this item.
When enough users have cast their vote on this item, the average rating will also be shown.
Your vote was cast
Thank you for your feedback
Thank you for your feedback
AuthorsViñas Ospino, Adriana Margarita
AdvisorsRamos Escudero, Fernando
Liria Domínguez, María Reyna
MetadataShow full item record
Citation1. Viñas Ospino AM. Polifenoles totales y flavonoides en diferentes extractos de harinas industriales, a granel y artesanales de quinua (Chenopodium quinoa), kiwicha (Amarantus caudatus) y kañiwa (Chenopodium pallidicaule) [Internet]. Universidad Peruana de Ciencias Aplicadas (UPC); 2017. Available from: http://hdl.handle.net/10757/621859
AbstractIntroduction: Andean cereals from Peru are rich in a wide range of bioactive compounds e.g. flavonoids phenolic acids with known effects on human health. These cereals are sold as grains and as flours. The transformation of these cereals can affect their healthy properties. Objective: Compare the total phenolic and contents of different forms of extractable phenolics (free, acidic and basic flavonoid hydrolysis) from artisanal, bulk and industrial flours of quinua (Chenopodium quinoa), kiwicha (Amarantus caudatus) and kañiwa (Chenopodium pallidicaule). Methodology: This analysis was performed in Universidad Peruana de Ciencias Aplicadas, Chorrillos. Were analyzed three kinds of cereals: kañiwa, kiwicha and quinua and three presentations of them: artisanal, in bulk and industrial and three extractions: non-hydrolyzed and hydrolyzed in acid and basic mediums. The samples were analyzed using visible molecular absorption spectroscopy. For the determination of polyphenols, the Folin-Ciocalteu method was used and for the determination of flavonoids the colorimetric reaction of aluminium chloride was applied. Results: The results indicated that the amount of total polyphenols (548.07mg GAE/100G) and total flavonoids (409.01mg CE/100G) was higher in kañiwa flour samples, and the acid and basic hydrolysis increased the total polyphenols and flavonoids. The majority of the results indicated high values of polyphenols in artisanal and in bulk samples. In flavonoids, the results were variable. Discussion: The high content of bioactives in kañiwa flour samples was due to the resistance in strong weather and the pigmentation. The results found in the artisanal, bulk and industrial presentations showed a difference of content of polyphenols but this was not a pattern in all the samples. It is because other factors can affect: the variety of the product, harvest conditions, storage, industrial and sale process. Conclusion: the kañiwa flour had the highest score of biocomponents and the liberation of them increased in the acid and basic hydrolysis. The artisanal, in bulk and industrial flours showed a higher content of polyphenols, but it did not occur with the content of flavonoids. The content of phenolic compounds was affected by the process of transformation but the flours analyzed maintained important content of polyphenols and flavonoids. Therefore, the consumption of these products has benefits in health.
The following license files are associated with this item: