Red Oak (<i>Quercus rubra</i> L.) Fruits as Potential Alternative for Cocoa Powder: Optimization of Roasting Conditions, Antioxidant, and Biological Properties

Cocoa powder is a basic ingredient in the manufacture of chocolate, one of the most appreciated sweet products in the world for its sensory and nutritional properties. Furthermore, it displays a central nervous system stimulant effect. This study aimed to investigate acorn-derived powder as an alter...

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Main Authors: Romina Alina Marc (Vlaic), Mihaela Niculae, Emőke Páll, Vlad Mureșan, Andruţa Mureșan, Anda Tanislav, Andreea Pușcaș, Crina Carmen Mureșan, Constantin Cerbu
Format: Article
Language:English
Published: MDPI AG 2021-08-01
Series:Forests
Subjects:
Online Access:https://www.mdpi.com/1999-4907/12/8/1088
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author Romina Alina Marc (Vlaic)
Mihaela Niculae
Emőke Páll
Vlad Mureșan
Andruţa Mureșan
Anda Tanislav
Andreea Pușcaș
Crina Carmen Mureșan
Constantin Cerbu
author_facet Romina Alina Marc (Vlaic)
Mihaela Niculae
Emőke Páll
Vlad Mureșan
Andruţa Mureșan
Anda Tanislav
Andreea Pușcaș
Crina Carmen Mureșan
Constantin Cerbu
author_sort Romina Alina Marc (Vlaic)
collection DOAJ
description Cocoa powder is a basic ingredient in the manufacture of chocolate, one of the most appreciated sweet products in the world for its sensory and nutritional properties. Furthermore, it displays a central nervous system stimulant effect. This study aimed to investigate acorn-derived powder as an alternative to cocoa powder, in order to obtain a chocolate that does not contain stimulants of the nervous system. Both the chocolate technological process and acorns roasting process (180 °C/25 min, 200 °C/20 min and 220 °C/15 min) were optimized to obtain acorn powder with an organoleptic profile as close as possible to that of cocoa powder. The chocolate sensory evaluation was performed by means of the hedonic test. Furthermore, the aqueous extracts obtained from the resulting powder were evaluated for total polyphenol content, and in vitro antimicrobial and antiproliferative properties. The results point out a high content of phenolic compounds (500.78–524.01 mg GAE/100 g); protection against microbial contamination based on the ability to inhibit a Gram-positive bacterium (<i>Bacillus cereus</i>) was also noticed. The aqueous acorn extracts were also able to reduce the cell viability of HFL-1 (human fetal lung fibroblast) and DLD-1 (colorectal adenocarcinoma) lines. This study suggests red oak (<i>Quercus rubra</i>) fruits as a potential alternative to cocoa powder in the manufacture of chocolate.
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spelling doaj.art-76467f85d5cc4dafacb699ceadb134712023-11-22T07:43:23ZengMDPI AGForests1999-49072021-08-01128108810.3390/f12081088Red Oak (<i>Quercus rubra</i> L.) Fruits as Potential Alternative for Cocoa Powder: Optimization of Roasting Conditions, Antioxidant, and Biological PropertiesRomina Alina Marc (Vlaic)0Mihaela Niculae1Emőke Páll2Vlad Mureșan3Andruţa Mureșan4Anda Tanislav5Andreea Pușcaș6Crina Carmen Mureșan7Constantin Cerbu8Food Engineering Department, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5 Calea Mănăştur Street, 400372 Cluj-Napoca, RomaniaDepartment of Infectious Diseases, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5 Calea Mănăştur Street, 400372 Cluj-Napoca, RomaniaDepartment of Infectious Diseases, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5 Calea Mănăştur Street, 400372 Cluj-Napoca, RomaniaFood Engineering Department, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5 Calea Mănăştur Street, 400372 Cluj-Napoca, RomaniaFood Engineering Department, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5 Calea Mănăştur Street, 400372 Cluj-Napoca, RomaniaFood Engineering Department, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5 Calea Mănăştur Street, 400372 Cluj-Napoca, RomaniaFood Engineering Department, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5 Calea Mănăştur Street, 400372 Cluj-Napoca, RomaniaFood Engineering Department, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5 Calea Mănăştur Street, 400372 Cluj-Napoca, RomaniaDepartment of Infectious Diseases, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5 Calea Mănăştur Street, 400372 Cluj-Napoca, RomaniaCocoa powder is a basic ingredient in the manufacture of chocolate, one of the most appreciated sweet products in the world for its sensory and nutritional properties. Furthermore, it displays a central nervous system stimulant effect. This study aimed to investigate acorn-derived powder as an alternative to cocoa powder, in order to obtain a chocolate that does not contain stimulants of the nervous system. Both the chocolate technological process and acorns roasting process (180 °C/25 min, 200 °C/20 min and 220 °C/15 min) were optimized to obtain acorn powder with an organoleptic profile as close as possible to that of cocoa powder. The chocolate sensory evaluation was performed by means of the hedonic test. Furthermore, the aqueous extracts obtained from the resulting powder were evaluated for total polyphenol content, and in vitro antimicrobial and antiproliferative properties. The results point out a high content of phenolic compounds (500.78–524.01 mg GAE/100 g); protection against microbial contamination based on the ability to inhibit a Gram-positive bacterium (<i>Bacillus cereus</i>) was also noticed. The aqueous acorn extracts were also able to reduce the cell viability of HFL-1 (human fetal lung fibroblast) and DLD-1 (colorectal adenocarcinoma) lines. This study suggests red oak (<i>Quercus rubra</i>) fruits as a potential alternative to cocoa powder in the manufacture of chocolate.https://www.mdpi.com/1999-4907/12/8/1088acornpolyphenolsantibacterial activityantiproliferative activitychocolate
spellingShingle Romina Alina Marc (Vlaic)
Mihaela Niculae
Emőke Páll
Vlad Mureșan
Andruţa Mureșan
Anda Tanislav
Andreea Pușcaș
Crina Carmen Mureșan
Constantin Cerbu
Red Oak (<i>Quercus rubra</i> L.) Fruits as Potential Alternative for Cocoa Powder: Optimization of Roasting Conditions, Antioxidant, and Biological Properties
Forests
acorn
polyphenols
antibacterial activity
antiproliferative activity
chocolate
title Red Oak (<i>Quercus rubra</i> L.) Fruits as Potential Alternative for Cocoa Powder: Optimization of Roasting Conditions, Antioxidant, and Biological Properties
title_full Red Oak (<i>Quercus rubra</i> L.) Fruits as Potential Alternative for Cocoa Powder: Optimization of Roasting Conditions, Antioxidant, and Biological Properties
title_fullStr Red Oak (<i>Quercus rubra</i> L.) Fruits as Potential Alternative for Cocoa Powder: Optimization of Roasting Conditions, Antioxidant, and Biological Properties
title_full_unstemmed Red Oak (<i>Quercus rubra</i> L.) Fruits as Potential Alternative for Cocoa Powder: Optimization of Roasting Conditions, Antioxidant, and Biological Properties
title_short Red Oak (<i>Quercus rubra</i> L.) Fruits as Potential Alternative for Cocoa Powder: Optimization of Roasting Conditions, Antioxidant, and Biological Properties
title_sort red oak i quercus rubra i l fruits as potential alternative for cocoa powder optimization of roasting conditions antioxidant and biological properties
topic acorn
polyphenols
antibacterial activity
antiproliferative activity
chocolate
url https://www.mdpi.com/1999-4907/12/8/1088
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