Artículos de revistas
Acerola's clones of industrial interest
Fecha
2005-02-01Registro en:
Journal of Food Biochemistry. Malden: Blackwell Publishing Inc., v. 29, n. 1, p. 99-107, 2005.
0145-8884
10.1111/j.1745-4514.2005.00002.x
WOS:000228639900007
Autor
Universidade Estadual Paulista (Unesp)
State Univ Feira Santana
Institución
Resumen
In order to know which clone of acerola is better for acerola industrialization, we studied the pectin methylesterase (PME) specific activity, pectin content and vitamin C content in five different clones of acerola. The pectin yield varied from 1.37 to 2.99% and the highest content of pectin occurred in clones 3 and 5. Ascorbic acid varied significantly from 1157.5 to 1735.5 mg/100 g of pulp in the five clones. The highest content of vitamin C occurred in clone 4. The PME specific activity varied from 0.79 to 2.92 units g(-1)/g of pulp and the highest values occurred in clone 2. We also studied the optimum temperature and the optimum pH of this enzyme. Clones 1, 2, 4 and 5 showed optimum temperature at 90C. Clone 3 showed practically the same specific activity at all temperatures studied. Clones 1 and 4 showed an optimum pH of 9.0 and clone numbers 2, 3 and 5 showed a pH optimum at 8.5.