Pattern of pH and electrical conductivity upon honey dilution as a complementary tool for discriminating geographical origin of honeys

被引:132
作者
Acquarone, Carolina [1 ]
Buera, Pilar [1 ]
Elizalde, Beatriz [1 ]
机构
[1] Univ Buenos Aires, Dept Ind, Fac Ciencias Exactas & Nat, RA-1428 Buenos Aires, DF, Argentina
关键词
pH; mineral content; botanic origin; electrical conductivity; geographic origin;
D O I
10.1016/j.foodchem.2006.01.058
中图分类号
O69 [应用化学];
学科分类号
081704 [应用化学];
摘要
Seven physicochemical parameters (water content, ash, water activity, free, lactone and total acidity, pH and electrical conductivity) were analyzed in 19 nectar honeys of different floral origin and from several regions of Argentina. In addition, the pattern of electrical conductivity and pH upon honey dilution were also studied with increasing honey concentration, the pH values decreased exponentially. The dependence of specific electrical conductivity (kappa) on honey concentration was characterized by a maximum at a kappa value (kappa(max)) corresponding to a dry solids of honey concentration of 30-35% (w/w). For a given geographical region, ash and acidity values were useful for discriminating honeys of different floral origins. The most adequate parameters for discriminating honeys of different geographical origin were those which described the patterns of pH and electrical conductivity with changes of honey concentration. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:695 / 703
页数:9
相关论文
共 45 条
[1]
ACCORTI M, 1986, Apicoltore Moderno, V77, P165
[2]
Accorti M., 1987, APIACTA, V22, P19
[3]
ALCALA M, 1990, ALIMENTACION EQUIPOS, V5, P99
[4]
A review of the analytical methods to determine the geographical and botanical origin of honey [J].
Anklam, E .
FOOD CHEMISTRY, 1998, 63 (04) :549-562
[5]
ANKLAM E, 2001, AM LAB MAY, P60
[6]
AOAC, 1996, OFF METH AN
[7]
BAMBARA SB, 1991, AM BEE J, V131, P242
[8]
Geographical discrimination of honeys through the employment of sugar patterns and common chemical quality parameters [J].
Bárez, JAG ;
Garcia-Villanova, RJ ;
Garcia, SE ;
Palá, TR ;
Paramás, AMG ;
Sánchez, JS .
EUROPEAN FOOD RESEARCH AND TECHNOLOGY, 2000, 210 (06) :437-444
[9]
EVALUATION AND COMPARISON OF SIMPLE METHODS FOR PH MEASUREMENT OF REDUCED-MOISTURE SOLID SYSTEMS [J].
BELL, LN ;
LABUZA, TP .
JOURNAL OF FOOD PROCESSING AND PRESERVATION, 1992, 16 (04) :289-297
[10]
COMPOSITIONAL INFLUENCE ON THE PH OF REDUCED-MOISTURE SOLUTIONS [J].
BELL, LN ;
LABUZA, TP .
JOURNAL OF FOOD SCIENCE, 1992, 57 (03) :732-734