Amido fermentado de alpiste (Phalariscanariensis L.) enriquecido com microcápsulas contendo compostos polifenólicos de casca e semente de jabuticaba (Myrciaria cauliflora)
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2019-02-27
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Universidade Federal de Goiás
Resumo
Canaryseed, alsoknown as annualcanarygrass, canarygrass anual, canário grama, alpista, capim
alpista and milho alpista, stands out as a new sourceofstarch, composedofapproximately 60%
ofthiscarbohydrate. The characteristicsofthiscropmake it a favorable cereal for foodand industrial
applications. Fermentationis a processusedtomodifystarchstructuresandiswidelyused for
thepreparationofcheesebreadand biscuits. The additionofpolyphenolsfrom jabuticaba
wouldenrichtheseproducts, however it issusceptibletooxidationbyexternalelementssuch as heat,
light andstorage time. In this case, emergingmicroencapsulationtechniquesallowto improve
thestabilityofthesecompounds. The presentstudyaimedto prepare biscuits
fromfermentedcanaryseedstarch (Phalariscanariensis L.)
andtoenrichwithmicrocapsulesofpolyphenoliccompoundsoftheseedsand peles jabuticaba (Myrciaria
cauliflora) mixture. The microcapsuleswereobtainedbythe experimental design DCCR (central
rotationalcompound design) varyingtheinitialamountofsodiumalginateand volume
ofthehydroalcoholicseedsand peles jabuticaba. A total of 11
treatmentswereobtainedwiththehighestcontentofmicroencapsulatedphenoliccompoundfound in
treatments 2, 8 and4, andtheextract volume variableshowedgreaterinfluenceonthe response
ofthephenoliccompoundcontentandencapsulationefficiency. The
fermentationofthestarchoccurredduring 45 daysof natural fermentationwithsubsequentdrying in
thesun. The resultsofthemicrobiologicalanalyzeswerewithinthelimitsestablishedbylegislation,
withanincrease in theamylosecontentandlowerviscosityand retrograde
degradationthanthenativecanaryseedstarch. Fermentedcanaryseedstarchdidnot show
expansioncapacityandafteradditionofthemicrocapsules in the biscuits, treatments2and 3
presentedhighercontentofphenoliccompounds.
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Citação
BATISTA, R. D. Amido fermentado de alpiste (Phalariscanariensis L.) enriquecido com microcápsulas contendo compostos polifenólicos de casca e semente de jabuticaba (Myrciaria cauliflora). 2019. 134 f. Dissertação (Mestrado em Ciência e Tecnologia de Alimentos) - Universidade Federal de Goiás, Goiânia, 2019.