Comparison of rheological models to explain flow behavior of green coconut pulp: effect of maturation stage and temperature

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dc.creatorCinthia Yuka Kanzawa
dc.creatorFausto Makishi
dc.creatorIzabel Cristina Freitas Moraes
dc.creatorRogers Ribeiro
dc.creatorCynthia Ditchfield
dc.date.accessioned2023-05-18T11:49:35Z
dc.date.accessioned2025-09-08T22:57:52Z
dc.date.available2023-05-18T11:49:35Z
dc.date.issued2021-03-30
dc.description.sponsorshipFAPESP - Fundação de Amparo à Pesquisa do Estado de São Paulo
dc.identifier.doihttps://doi.org/10.1007/s11694-021-00891-0
dc.identifier.issn2193-4134
dc.identifier.urihttps://hdl.handle.net/1843/53557
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Food Measurement and Characterization
dc.rightsAcesso Restrito
dc.subjectCoco - Maturação
dc.subjectCoco - Produtos
dc.subjectCisalhamento
dc.subjectMonte Carlo, Método de
dc.subjectMarkov, Processos de
dc.titleComparison of rheological models to explain flow behavior of green coconut pulp: effect of maturation stage and temperature
dc.typeArtigo de periódico
local.citation.epage3142
local.citation.spage3133
local.citation.volume5
local.description.resumoGreen coconuts are harvested from six (young coconuts) to ten months (mature coconuts) after flowering. Green coconut pulp (GCP) is a byproduct of coconut water processing that presents foaming and emulsifying capacity and can be employed as a plant based alternative in different food products. Determining its rheological properties at different temperatures furnishes useful processing information. Rheological flow curves were obtained with a controlled stress rotational rheometer from (0.01 to 300 s−1) at temperatures from 20 to 80 °C. Young and mature GCP samples presented shear-thinning behavior represented by the Power Law and Herschel-Bulkley models. The models were compared by a Monte Carlo Markov Chain method that converged with small simulation errors, indicating its stability and that both models adequately described the data. The comparison of the Akaike’s information criterion indicated that for young GCP the Herschel-Bulkley model is preferable while for mature GCP the Power Law model is adequate. The apparent viscosity of mature GCP was approximately 100 times higher than for young GCP samples within the same range of shear rates. Mature GCP consistency coefficient variation with temperature was described by an Arrhenius model. The apparent viscosity (µap) of young GCP decreased with temperature up to 50 °C, then increased, particularly at low shear rates. For mature GCP samples apparent viscosity decreased with temperature rise. The change in composition (particularly lipids content) is probably responsible for the observed flow behavior at different maturation stages.
local.publisher.countryBrasil
local.publisher.departmentICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS
local.publisher.initialsUFMG
local.url.externahttps://link.springer.com/article/10.1007/s11694-021-00891-0

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