40 results about "RAPE HONEY" patented technology

The invention discloses a method for identifying acacia honey mixed with rapeseed honey. First, resin is used to extract phenolic acid compounds from honey, and chromatographically pure methanol is used to dilute the volume to prepare a test solution; then a certain amount of ten Prepare a phenolic acid reference substance, and dilute to volume with chromatographically pure methanol to prepare a reference substance solution. The determination method is to inject the reference substance solution and the test solution into the high-performance liquid chromatograph respectively, use the reference substance as the reference substance, measure and record the chromatogram, and obtain the HPLC-ECD fingerprint of acacia honey, and then use the same method to obtain the rapeseed The HPLC-ECD fingerprints of acacia honey and acacia honey mixed with rape honey were compared and combined with chemometric methods to identify whether acacia honey was adulterated with rape honey. The invention has reasonable design, good separation effect, high sensitivity and strong feasibility, and solves an important technical problem in adulteration identification and quality control of acacia honey.

The invention discloses a technology for producing greasy crystallized honey. The technology comprises the following steps of 1, a seed preparation comprising mixing rape honey, clean water and micro-grinded bee pollen, stirring to obtain a seed mixed solution, heating rape seed raw material honey in a water-bath, adding the heated rape seed raw material honey into the seed mixed solution with stirring, filtering by a sieve of 60 meshes, pouring the filtrate into a wide-mouth container, and putting the wide-mouth container into an inclosed thermostatic chamber having a temperature of 15 to 20 DEG C for 10 to 15 days to obtain crystal seeds, 2, a raw material honey selection process comprising selecting all natural honey having a light color, low water content less than 20% and high glucose content more than 35% as a raw material for production of the greasy crystallized honey, and 3, a raw material honey inoculation and crystallization process comprising a, inoculation, b, pre-crystallization, and c, after-crystallization. The greasy crystallized honey obtained by the technology has white and smooth appearance, a fine taste, and good stability, plasticity and repeatability.

A feature extraction method based on the single-item discriminant method to characterize the difference of honey in the intelligent olfactory spectrum, which is characterized in that all feature points are pattern-recognized one by one, and the difference in discrimination accuracy is compared when each signal point is used as a single feature. The recognition method is embedded in the feature selection. By combining the discriminant method, the ability of each signal point to predict the sample can be obtained. This method is more dependent on the selected pattern recognition method, and the selection result will change with the discriminant method. Single vector selection The difference in the accuracy rate among different sensors is small, while the difference between the information points at different detection times in the same sensor is relatively large, but the change trend of the Bayesian discrimination accuracy rate at different time points in different sensors is consistent with the change trend of the variance ratio, that is, the detection The initial signal discrimination accuracy rate is relatively high, concentrated in the first 30s detection time of each sensor, but the effect in the later detection period is poor, and the signal points with a discrimination accuracy rate greater than 60% are selected as feature points, a total of 598 feature points, of which rapeseed honey 20 / 23, linden honey 13 / 17, acacia honey 34 / 39.

An extraction method of intelligent olfaction spectrum feature representing differences of honey based on an independent component analysis is characterized in that: the main component analysis is classified according to the maximization of variance between data, namely the secondary moment of data, and the independence of data in the high order moment is neglected; the independent component carries out transformation of matrix by utilizing the high order moment between data, thus related rows between feature vectors are further decreased, and the compressing effect of signals is strengthened; the discrimination rate is 94.94%, when the independent component is 14, the honey sample is 75 / 79, wherein the rape honey is 22 / 23, linden honey is 16 / 17, and acacia honey is 37 / 39.

The invention discloses an identification method of chaste honey, rape honey and acacia honey based on an NMR (Nuclear Magnetic Resonance) technique. The identification method comprises the followingsteps: filtering a honey sample and then preparing the filtered honey sample into 0.03 to 0.5 g / L solution with heavy water; adding a phosphate buffered solution with the concentration of 0.5 to 2.0 mol / L, wherein the phosphate buffered solution contains a 3-trimethylsilyl-1-sodium propyl sulfonate internal standard solution with the volume fraction of 0.05 to 0.3 percent and 0.1 to 3.0 mM of sodium azide; mixing, adjusting the pH value of the phosphate buffered solution to 2.5 to 4.0 and measuring by a NMR spectrometer to obtain an NMR spectrum; and analyzing chemical shift of a honey samplemarker, and determining that the honey sample of which 1H chemical shift delta is 7.0 to 7.5 ppm and a deviation delta is within a range of 0.02 to 0.05 ppm is the chaste honey, otherwise the honey sample is the rape honey or the acacia honey. The method has the advantages that a large quantity of samples can be analyzed in a short time and the chaste honey, the rape honey and the acacia honey canbe quickly identified.