Evaluation of proline content in cuban monofloral honeys
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Abstract
Proline is the most abundant amino acid in honey and its determination constitutes an additional quality parameter contemplated in international regulations. However, the content of this amino acid in Cuban honeys has been little studied. Precisely, in this work authors propose to study the proline content in Cuban monofloral honeys. Honeys from sunflower goldeneye, black mangrove, singing bean, linen vine, christmas vine and quickstick, obtained directly from local beekeepers, were used. The proline concentration was estimated using the harmonized method recommended by the International Honey Commission. The highest proline content was found in the honeys of singing bean honey (359 mg/kg ± 45 mg/kg) and quickstick (358 mg/kg ±65 mg/kg), while christmas vine honey presented the lowest values (109 mg/kg ± 30 mg/kg). All the christmas vine samples showed proline concentration below the limit of 180 mg/kg established. From these studies, it should be taken into account in the quality control analysis that, for some Cuban honeys, as christmas vine, the proline content is low and does not represent that honey is adulterated or immature.
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