scholarly journals Composition and Thermogravimetric Characterization of Components of Venezuelan Fermented and dry Trinitario Cocoa Beans (Theobroma cacao L.): Whole Beans, Peeled Beans and Shells

Author(s):  
Aleida J. Sandoval ◽  
◽  
José A. Barreiro ◽  
Andrea De Sousa ◽  
Danny Valera ◽  
...  
2010 ◽  
Vol 8 (3) ◽  
pp. 448-453
Author(s):  
Ratna Agung Samsumaharto

A study was carried out to characterize the cocoa lipase from cocoa beans (Theobroma cacao, L.) of clone PBC 159. The optimum temperature of cocoa lipase was 30-40 °C and the pH optimum was 7.0-8.0. The moleculer weight of the lipase enzyme was in between 45-66 kDa. The results indicate that Km value for cocoa bean lipase was 2.63 mM, when trimyristin was used as a substrate. The incubation of cocoa bean lipase with triolein and tributyrin (as substrate) yielded Km of 11.24 and 35.71 mM, respectively. The Vmax value obtained from the incubation of the lipase with a wide range of substrates, including tributyrin, trimyristin and triolein, are expressed as µmole acid/min/mg protein for cocoa lipase. Vmax values decreased with the increase in the triacylglycerol chain-length, with Vmax values of 27.78, 13.16 and 11.63 µmole acid/min/mg protein when incubated with tributyrin, trimyristin and triolein, respectively. Inhibition of lipase occurred in the presence of diisopropyl flourophosphate, N-bromosuccinimide and 5,5-dithiobis-(-2-nitrobenzoic acid).   Keywords: characterization, lipase, cocoa beans


Author(s):  
Muhammad Isa Dwijatmoko ◽  
Budi Nurtama ◽  
Nancy Dewi Yuliana ◽  
Misnawi Misnawi

Cocoa bean is a rich source of polyphenols, which are the largest group secondary metabolite with natural antioxidant property. Polyphenols from cocoabeans was reported to possess health benefits. Fermentation, one step in cocoa processing is needed to improve the quality of cocoa in which the concentration of cocoa bean polyphenols might decrease significantly through oxidation and exudation. Cocoa polyphenols content among different cocoa clones mightalso vary. The aims of this study were to determine total polyphenols, total flavanoid, epicatechin, and catechin content in several cocoa clones, those wereSulawesi 1, Sulawesi 2, ICCRI 03, and KW 617. Until now, characterization of polyphenols from those clones has not been reported. The effect of five daysfermentation to those parameters was also studied. The results of the study showed that fermentation and type of clones significantly affected total of polyphenols, total of flavanoids, epicatechin, and catechin content of the cocoa, there is also an interaction between fermentation and type of clones. Unfermented of Sulawesi 1 had the highest total polyphenols of 96.94±5.83 mg/g, total flavanoids of 90.92±1.89 mg/g, epicatechin of 52.50±0.46 mg/g, and catechin of 1.99±0.02 mg/g content compared to other clones. Among five days fermented cocoa beans, Sulawesi 2 showed the highest total polyphenols and total flavanoids content, while ICCRI 03 had the highest epicatechin and catechin content than other clones. Thus, in can be concluded that although fermentation is required to improve the flavor quality of cocoa, it significantly reduced the content of bioactive compounds. This effect varied amongdifferent cocoa clones.


LWT ◽  
2021 ◽  
pp. 111629
Author(s):  
Fernando Ramos-Escudero ◽  
Sandra Casimiro-Gonzales ◽  
África Fernández-Prior ◽  
Keidy Cancino Chávez ◽  
José Gómez-Mendoza ◽  
...  

2018 ◽  
Vol 11 (5) ◽  
pp. 1510-1517 ◽  
Author(s):  
Juliana C. Hashimoto ◽  
Jéssica C. Lima ◽  
Renata M. S. Celeghini ◽  
Alessandra B. Nogueira ◽  
Priscilla Efraim ◽  
...  

2019 ◽  
Vol 299 ◽  
pp. 125105 ◽  
Author(s):  
Stefan G. Bindereif ◽  
Felix Brauer ◽  
Jan-Marcel Schubert ◽  
Stephan Schwarzinger ◽  
Gerhard Gebauer

2020 ◽  
Vol 23 (1) ◽  
pp. 434-444
Author(s):  
Collazos-Escobar G.A. ◽  
Gutiérrez-Guzmán N. ◽  
Váquiro-Herrera H.A. ◽  
Amorocho-Cruz C.M.

1999 ◽  
Vol 8 (12) ◽  
pp. 2141-2143 ◽  
Author(s):  
C. Lanaud ◽  
A. M. Risterucci ◽  
I. Pieretti ◽  
M. Falque ◽  
A. Bouet ◽  
...  

2015 ◽  
Vol 119 (4) ◽  
pp. 1112-1126 ◽  
Author(s):  
Y. Acebo-Guerrero ◽  
A. Hernández-Rodríguez ◽  
O. Vandeputte ◽  
Y. Miguélez-Sierra ◽  
M. Heydrich-Pérez ◽  
...  

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