该文对陕甘7县21个刺槐蜜样品的理化性质进行分析。结果表明,陕甘7县刺槐蜜在色度、水分和灰分含量上都存在显著差异。7县中陇县和清水县的刺槐蜜还原糖和果糖含量最高,蔗糖含量最少。利用原子吸收光谱仪对刺槐蜜中的10种矿质元素进行测定,结果显示刺槐蜜中K元素含量最高。庄浪县刺槐蜜中的矿质元素含量最高,凤翔县的含量最低;且矿质元素含量与刺槐蜜的灰分含量和色度呈明显正相关。将矿质元素作为变量进行主成分分析(principal component analysis,PCA),可将7县蜂蜜按照地理位置分为两大类。甘肃庄浪、清水县和陕西陇县为一类,甘肃合水和陕西凤翔、长武、永寿县为另一类,与地理位置分布相吻合。该研究的开展可补充陕甘特色刺槐蜜的相关数据,为其开发利用提供理论依据。
This work conducted the evaluation of the quality of twenty-one Robinia pseudoacacia honey samples from 7 counties of Shaanxi and Gansu provinces and their physicochemical property. The results showed that each of the color, moisture and ash content had a significant difference in R. pseudoacacia honey from 7 counties. Longxian and Qingshui had the highest content of reducing sugar and fructose, and the lowest content of sucrose in 7 counties. Ten kinds of mineral elements in R. pseudoacacia honey were determined by the method of flame atomic absorption spectrometry. Among R. pseudoacacia honey, Kalium was the highest mean value of the mineral element. The total amount of mineral elements in R. pseudoacacia honey was the highest in Zhuanglang, while Fengxiang was the lowest. Moreover, the content of mineral elements was positively correlated with the ash content and color in R. pseudoacacia honey. R. pseudoacacia honey from 7 counties could be sorted out by the method of principal component analysis (PCA). The honey of Zhuanglang, Qingshui county in Gansu province and Longxian county in Shaanxi province were classified as one category, while the honey of Heshui county in Gansu province and Fengxiang, Changwu and Yongshou county in Shaanxi province were classified as another category, which was consistent with the geographical distribution. This study could supply guidelines to R. pseudoacacia honey from the Shaanxi-Gansu region, and provide some theory evidence to utilize the honey.
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