Dataset Information

Modeling of drying and ameliorative effects of relative humidity (RH) against ?-carotene degradation and color of carrot (Daucus carota var.) slices.

ABSTRACT: Drying and ?-carotenes retention kinetics were predicted using models in relative humidity (RH) drying condition. This was achieved by drying carrot slices using RH-convective hot-air dryer at 60, 70 and 80 °C under RH (10% 20% and 30%) conditions at 2.0 m/s air velocity. Three mathematical models describing thin layer were compared to their goodness of fit in terms of coefficient of correlation (R2), root mean square error (RMSE) and reduced Chi square ( ?2 ). The Wang and Singh model could satisfactorily describe RH-convective drying of carrot slices with R2, RMSE and ?2 in the ranges of 0.996-0.999, 5.4?×?10-4-9.4?×?10-4 and 0.0150-0.03353 respectively. The results reveal that a range of 3.61-8.2% retention of ?-carotene was observed for every 10% increase in RH in various drying air temperature. In summary, higher temperatures were mainly responsible for ?-carotenes degradation however this can be mitigated when drying is conducted under higher RH.

SUBMITTER: Sarpong F

PROVIDER: S-EPMC6365345 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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Publications

Modeling of drying and ameliorative effects of relative humidity (RH) against β-carotene degradation and color of carrot (<i>Daucus carota</i> var.) slices.

Sarpong Frederick F Zhou Cunshan C Bai Junwen J Amenorfe Leticia Peace LP Golly Moses Kwaku MK Ma Haile H

Food science and biotechnology 20180828 1

Drying and β-carotenes retention kinetics were predicted using models in relative humidity (RH) drying condition. This was achieved by drying carrot slices using RH-convective hot-air dryer at 60, 70 and 80 °C under RH (10% 20% and 30%) conditions at 2.0 m/s air velocity. Three mathematical models describing thin layer were compared to their goodness of fit in terms of coefficient of correlation (R<sup>2</sup>), root mean square error (RMSE) and reduced Chi square ( χ 2 ). The Wang and Singh mo ...[more]

PMID: 30815297

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Project description:Increased use of intellectual property rights over plant germplasm has led to a complicated landscape for exchange among plant breeders. Our goal was to examine phenotypic and genotypic diversity present in commercially available carrot (Daucus carota L. var. sativus) germplasm in relation to the freedom to operate-the ability for plant breeders to access and use crop genetic diversity. A collection of 140 commercially available carrot cultivars were grown in replicated field trials in the Madison, WI area in 2013 and 2014. Phenotypic measurements were recorded for leaf and root characteristics. Illumina sequencing was used to conduct genotyping by sequencing analysis on all cultivars to understand the range of genetic diversity present. Additionally, the intellectual property rights associated with each cultivar was noted to determine the freedom to operate. We found that although one-third of the commercially available US carrot cultivars in our study are restricted through some form of intellectual property rights, the genetic and phenotypic variability of the protected cultivars does not represent a completely separate group from the available material. Phenotypic analyses including ANOVA and principal components analysis, suggest that many of the traits differed significantly based on market class, but not by whether the cultivar had freedom to operate. The principal components and Fst analyses on the genotyping by sequencing data revealed that carrot market classes (Fst = 0.065) and freedom to operate classes (Fst = 0.023) were not genetically distinct, and that principle components 1 and 2 account for only 10.1% of the total genotypic variation, implying that cultivated carrot germplasm in the US forms an unstructured population. Our findings suggest that the genetic diversity present in carrot cultivars that have freedom to operate is potentially large enough to support carrot breeding efforts in most market classes given present levels of intellectual property protection.

Dataset Information

Modeling of drying and ameliorative effects of relative humidity (RH) against ?-carotene degradation and color of carrot (Daucus carota var.) slices.

Publications

Modeling of drying and ameliorative effects of relative humidity (RH) against β-carotene degradation and color of carrot (<i>Daucus carota</i> var.) slices.

Similar Datasets

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