Núcleo de Ensino, Ciência e Tecnologia em Apicultura Racional (NECTAR), Departamento de Produção Animal, Faculdade de Medicina Veterinária e Zootecnia, UNESP - Univ Estadual Paulista, Distrito de Rubião Jr., s/n, Zip Code 18618-000 Botucatu, São Paulo, Brazil.
Instituto de Biociências, Departamento de Química e Bioquímica, UNESP - Univ Estadual Paulista, Distrito de Rubião Jr., s/n, Zip Code 18618-000 Botucatu, São Paulo, Brazil.
Food Chem. 2016 Jul 15;203:252-257. doi: 10.1016/j.foodchem.2016.02.074. Epub 2016 Feb 10.
In this study, samples of coffee honey produced in Espírito Santo State, Brazil, were characterized based on their melissopalynology, physicochemical and nutritional properties, and mineral and caffeine contents. The caffeine content in the nectar from coffee flowers was measured by high performance liquid chromatography (HPLC). Blends of honey were obtained from three Coffea arabica crops, each with 10 colonies of Africanized Apis mellifera. All honey samples contained monofloral (75-78%) pollen belonging to C. arabica. Physicochemical parameters (total acidity, pH, moisture, dry matter, ash, and qualitative hydroxymethylfurfural) were within the approved limits established by EU legislation. Coffee honey contains high levels of ascorbic acid (294.68 mg kg(-1)) and low amounts of total flavonoids (3.51 ± 0.18 mg QE kg(-1)). The most abundant minerals were potassium and calcium (962.59 ± 154.3 and 343.75 ± 25.56 mg kg(-1), respectively). The caffeine content in coffee nectar (1.64 mg kg(-1)) was approximately 8-fold lower than that in honey (12.02 ± 0.81 mg kg(-1)).
在这项研究中，对产自巴西圣埃斯皮里图州的咖啡蜂蜜样本进行了分析，主要从其蜜粉学特性、理化和营养特性以及矿物质和咖啡因含量等方面进行了研究。采用高效液相色谱法（HPLC）测定咖啡花蜜中的咖啡因含量。从三个阿拉比卡咖啡作物中获得了三种蜂蜜混合物，每个作物有 10 个非洲化的意大利蜜蜂（Apis mellifera）殖民地。所有蜂蜜样本均含有属于阿拉比卡咖啡（Coffea arabica）的单花蜜（75-78%）花粉。理化参数（总酸度、pH 值、水分、干物质、灰分和羟甲基糠醛的定性）均在欧盟法规规定的可接受范围内。咖啡蜂蜜含有丰富的抗坏血酸（294.68 mg kg(-1)）和低含量的总类黄酮（3.51 ± 0.18 mg QE kg(-1)）。最丰富的矿物质是钾和钙（分别为 962.59 ± 154.3 和 343.75 ± 25.56 mg kg(-1)）。咖啡花蜜中的咖啡因含量（1.64 mg kg(-1)）比蜂蜜中的咖啡因含量（12.02 ± 0.81 mg kg(-1)）低约 8 倍。
