Evaluation of some functional properties of purple corn (Zea mays L.) dye, during its processing at pilot scale

Luis E. Napan, Franco F. Vietti-Guzmán, Erick Alvarez-Yanamango, Fredy Huayta

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

The present research aimed the evaluation of changes in functional properties during processing of purple corn dye extracted of its cob by solid-liquid extraction, then concentration and spray-dried in order to obtain a dye powder. The test performed were determination of Total Anthocynins (TA), Total Phenolic Content (TPC), and Antioxidant Capacity (AC) by ABTS method. Results obtained were TA content of 125,76 ± 1,23 mg TA/g DM, TPC of 127.47 ± 0.59 mg GAE/g DM, ABTS EC50 of 72.15 ± 1.16 µg TE/g (water-methanol extract) in purple corn cob characterization; in purple corn cob aqueous extract were TA content of 0.53 mg TA/ml, 1.81 mg GAE/ml, 787.17 µg TE/ml; and after concentration TA content of 0.62 mg TA/ml, 2.26 mg GAE/ml, 2471.77 µg TE/ml; and for purple corn dye powder were TA content of 0.37mg TA/ml, 0.81 mg GAE/ml, 1961.20 µg TE/ml, where degradation is observable due to exposure to high temperatures, but keeping a high ratios of these functional compounds which is very desirable in order to use the natural dyes as substitutes of artificial ones, and is a promissory source of functional compounds for increasing nutritional values into food products.

Original languageEnglish
Title of host publication16th LACCEI International Multi-Conference for Engineering, Education Caribbean Conference for Engineering and Technology
Subtitle of host publicationInnovation, Education, and Inclusion
PublisherLatin American and Caribbean Consortium of Engineering Institutions
ISBN (Electronic)9780999344316
DOIs
StatePublished - 2018
Externally publishedYes
Event16th LACCEI International Multi-Conference for Engineering, Education Caribbean Conference for Engineering and Technology - Lima, Peru
Duration: 18 Jul 201820 Jul 2018

Publication series

NameProceedings of the LACCEI international Multi-conference for Engineering, Education and Technology
Volume2018-July
ISSN (Electronic)2414-6390

Conference

Conference16th LACCEI International Multi-Conference for Engineering, Education Caribbean Conference for Engineering and Technology
Country/TerritoryPeru
CityLima
Period18/07/1820/07/18

Keywords

  • Antioxidantes
  • Functional properties
  • Natural dyes
  • Zea mays L

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