Thermal properties of defatted meal, concentrate, and protein isolate of baru nuts (Dipteryx alata Vog.)
Baru (Dipteryx alata Vog.), a species of legume found in the Brazilian savannas, was investigated in this study for the composition of its flesh and seed. Thermal analyses, Thermogravimetry (TG), and Differential Scanning Calorimetry (DSC) were used to investigate the proteins in defatted meal, conc...
Main Authors: | , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Sociedade Brasileira de Ciência e Tecnologia de Alimentos
2012-03-01
|
Series: | Food Science and Technology |
Subjects: | |
Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000100008&lng=en&tlng=en |
id |
doaj-236402f8069f4531ba3e8945f33b0529 |
---|---|
record_format |
Article |
spelling |
doaj-236402f8069f4531ba3e8945f33b05292020-11-24T22:11:35ZengSociedade Brasileira de Ciência e Tecnologia de AlimentosFood Science and Technology1678-457X2012-03-013215255S0101-20612012000100008Thermal properties of defatted meal, concentrate, and protein isolate of baru nuts (Dipteryx alata Vog.)Rita de Cássia Avellaneda Guimarães0Simone Palma Favaro1Anderson Dias Vieira de Souza2Cláudia Muniz Soares3Ângela Alves Nunes4Lincoln Carlos Silva de Oliveira5Michael Robin Honer6Universidade Católica Dom BoscoUniversidade Católica Dom BoscoUniversidade Católica Dom BoscoUniversidade Católica Dom BoscoUniversidade Católica Dom BoscoUniversidade Federal da Grande DouradosUniversidade Católica Dom BoscoBaru (Dipteryx alata Vog.), a species of legume found in the Brazilian savannas, was investigated in this study for the composition of its flesh and seed. Thermal analyses, Thermogravimetry (TG), and Differential Scanning Calorimetry (DSC) were used to investigate the proteins in defatted meal, concentrate, and protein isolate. The protein concentrate was extracted at pH 10, followed by a precipitation at the isoelectric point to obtain the isolate that was spray dried. The thermogravimetric curves were obtained under a nitrogen atmosphere with a 100 mL/minutes flow. The initial, final and peak temperatures and mass loss were analyzed. Within the performed temperature ranges studied, the defatted meal and concentrate presented four steps of mass loss, while the isolate showed only two steps. The protein content of defatted meal from Baru nuts was higher than that of the isolate. On the other hand, there was a reduction in enthalpy, which suggests that the process applied to obtain the baru concentrate and isolate led to protein denaturation.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000100008&lng=en&tlng=endesnaturação proteicaanálises térmicaspicos endotérmicosleguminosas |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Rita de Cássia Avellaneda Guimarães Simone Palma Favaro Anderson Dias Vieira de Souza Cláudia Muniz Soares Ângela Alves Nunes Lincoln Carlos Silva de Oliveira Michael Robin Honer |
spellingShingle |
Rita de Cássia Avellaneda Guimarães Simone Palma Favaro Anderson Dias Vieira de Souza Cláudia Muniz Soares Ângela Alves Nunes Lincoln Carlos Silva de Oliveira Michael Robin Honer Thermal properties of defatted meal, concentrate, and protein isolate of baru nuts (Dipteryx alata Vog.) Food Science and Technology desnaturação proteica análises térmicas picos endotérmicos leguminosas |
author_facet |
Rita de Cássia Avellaneda Guimarães Simone Palma Favaro Anderson Dias Vieira de Souza Cláudia Muniz Soares Ângela Alves Nunes Lincoln Carlos Silva de Oliveira Michael Robin Honer |
author_sort |
Rita de Cássia Avellaneda Guimarães |
title |
Thermal properties of defatted meal, concentrate, and protein isolate of baru nuts (Dipteryx alata Vog.) |
title_short |
Thermal properties of defatted meal, concentrate, and protein isolate of baru nuts (Dipteryx alata Vog.) |
title_full |
Thermal properties of defatted meal, concentrate, and protein isolate of baru nuts (Dipteryx alata Vog.) |
title_fullStr |
Thermal properties of defatted meal, concentrate, and protein isolate of baru nuts (Dipteryx alata Vog.) |
title_full_unstemmed |
Thermal properties of defatted meal, concentrate, and protein isolate of baru nuts (Dipteryx alata Vog.) |
title_sort |
thermal properties of defatted meal, concentrate, and protein isolate of baru nuts (dipteryx alata vog.) |
publisher |
Sociedade Brasileira de Ciência e Tecnologia de Alimentos |
series |
Food Science and Technology |
issn |
1678-457X |
publishDate |
2012-03-01 |
description |
Baru (Dipteryx alata Vog.), a species of legume found in the Brazilian savannas, was investigated in this study for the composition of its flesh and seed. Thermal analyses, Thermogravimetry (TG), and Differential Scanning Calorimetry (DSC) were used to investigate the proteins in defatted meal, concentrate, and protein isolate. The protein concentrate was extracted at pH 10, followed by a precipitation at the isoelectric point to obtain the isolate that was spray dried. The thermogravimetric curves were obtained under a nitrogen atmosphere with a 100 mL/minutes flow. The initial, final and peak temperatures and mass loss were analyzed. Within the performed temperature ranges studied, the defatted meal and concentrate presented four steps of mass loss, while the isolate showed only two steps. The protein content of defatted meal from Baru nuts was higher than that of the isolate. On the other hand, there was a reduction in enthalpy, which suggests that the process applied to obtain the baru concentrate and isolate led to protein denaturation. |
topic |
desnaturação proteica análises térmicas picos endotérmicos leguminosas |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000100008&lng=en&tlng=en |
work_keys_str_mv |
AT ritadecassiaavellanedaguimaraes thermalpropertiesofdefattedmealconcentrateandproteinisolateofbarunutsdipteryxalatavog AT simonepalmafavaro thermalpropertiesofdefattedmealconcentrateandproteinisolateofbarunutsdipteryxalatavog AT andersondiasvieiradesouza thermalpropertiesofdefattedmealconcentrateandproteinisolateofbarunutsdipteryxalatavog AT claudiamunizsoares thermalpropertiesofdefattedmealconcentrateandproteinisolateofbarunutsdipteryxalatavog AT angelaalvesnunes thermalpropertiesofdefattedmealconcentrateandproteinisolateofbarunutsdipteryxalatavog AT lincolncarlossilvadeoliveira thermalpropertiesofdefattedmealconcentrateandproteinisolateofbarunutsdipteryxalatavog AT michaelrobinhoner thermalpropertiesofdefattedmealconcentrateandproteinisolateofbarunutsdipteryxalatavog |
_version_ |
1725805030487883776 |