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Method for rapidly judging freshness of tea corbicular pollen

A judging method and technology of freshness, which is applied to the rapid judgment of the storage time of tea bee pollen freshness and the field of judging the freshness of tea bee pollen, which can solve the problems of bee pollen freshness decline, processing raw material quality decline, lack of freshness, etc. , to achieve the effect of short time consumption, simple operation and easy standardization

Inactive Publication Date: 2016-09-07
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the upstream of this huge market demand, there is a serious lack of awareness of maintaining its freshness in various links such as collection, storage, and transportation—operations such as sun exposure, high-temperature drying, and non-refrigerated transportation can all cause a sharp drop in the freshness of bee pollen. Decrease, thereby greatly reducing the quality of processed raw materials

Method used

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  • Method for rapidly judging freshness of tea corbicular pollen

Examples

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Comparison scheme
Effect test

Embodiment 1

[0018] The freshness model of tea bee pollen was established, and the tea bee pollen was stored at 4°C, room temperature, 35°C and 50°C and collected at 7 days, 14 days, 1 month, 2 months, 3 months and 6 months. The bee pollen sample was mechanically broken, passed through a 100-mesh sieve, weighed 300 mg of the sample and added 2.7 ml of ultra-pure water, mixed evenly, and left to stand for 1 hour to measure with a pH meter. Independently measure 3 times, take the average value, and establish figure 1 A graph of the dynamic change in pH value. The tea bee pollen stored at room temperature for 20 days was selected to measure its pH value according to the above method, and the pH value was 5.68. According to the model, the tea bee pollen was stored at a temperature below 35°C for less than one month, and was relatively fresh.

Embodiment 2

[0020] Establish the tea bee pollen freshness model with reference to embodiment 1 and figure 1 A graph of the dynamic change in pH value. Select the tea bee pollen stored at 50°C for 100 days to measure its pH value according to the above method, and the pH value is 4.94. According to the model, the tea bee pollen is equivalent to being stored at 50°C for more than 2 months or at 35°C for 6 months. If it is more than one month old, it is considered as stale.

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Abstract

The invention provides a method for rapidly judging freshness of tea corbicular pollen. The method comprises the following steps: respectively storing to-be-measured tea corbicular pollen at a temperature of 4 DEG C, a room temperature, a temperature of 35 DEG C and a temperature of 50 DEG C, sampling at regular time, establishing a tea corbicular pollen freshness model, measuring by use of a pH meter, independently measuring for three times to obtain an average value, and drawing a dynamic change curve; if the pH value of a to-be-measured product is not lower than 5.6, judging that the tea corbicular pollen is fresh; if the pH value of the to-be-measured product is not greater than 5.0, judging that the tea corbicular pollen is not fresh. The method is capable of judging freshness of tea corbicular pollen based on the pH value of tea corbicular pollen. The method is reasonable in design, has the advantages of simplicity and convenience in operation and short time consumption, can be finished within several minutes, and is high in sensitivity, good in repeatability, easy for standardization and low in equipment requirement, and quite easy to popularize. The method can be applied to rapid judgment of the freshness of tea corbicular pollen. The method provided by the invention also can be applied to rapid judgment of freshness of other bee pollen.

Description

technical field [0001] The invention belongs to the field of bee products, and relates to a method for judging the freshness of tea bee pollen, in particular to a method for quickly judging the freshness storage time of tea bee pollen. Background technique [0002] Bee pollen is the pollen grains collected by bees from the male anthers of angiosperms and the microspore sacs on the microspore leaves of gymnosperms, and processed by bees. As a natural resource, bee pollen not only contains very rich proteins, fats, sugars, trace elements, vitamins, but also contains biologically active substances such as nucleic acids, flavonoids, hormones and other biologically active substances that have special effects on the physiological functions of organisms. It is "all-round nutrition storehouse" and "complete nutrition product". With the in-depth research on bee pollen, its various physiological and pharmacological functions have been gradually discovered, such as preventing aging, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/02
CPCG01N33/02
Inventor 胡福良平舜张翠平郑火青卢媛媛
Owner ZHEJIANG UNIV