Said to yunnan plateau characteristics of fruit, the first thing we think of the most impressive is more inspirational "chu orange" to the person, because chu orange gives us not only the spiritual incentive, and the fruit quality requirements, with the standard of chu orange fruit tasting a set of system requirements, including the fruit size, fruit surface smoothness, skin thickness, pulp sugar, acidity, VC, edible rate, etc., is a study of fruit industry.
Fruit quality stand or fall not everyone can be defined, its quality is good or bad to a certain quantitative basis, fruit quality is divided into two aspects of sensory properties and biochemical properties and sensory properties by the people through sight, smell, touch, taste, give a person a kind of knowledge, including the appearance quality of the fruit size (longitudinal x horizontal stem), skin thickness, shape, color, surface defects (such as wind damage, wear, rusty spot), and acid, sweet, bitter, astringent, chewing feeling when the fruit hardness, tender flesh, edible rate and melting rate, etc. Biochemical properties refer to the amount of nutrients and health functional substances contained in fruit, including fruit pigment, VC, amino acids and minerals.
Yunnan is characterized by the development of agriculture in the plateau, with a wide variety of fruits. Usually, the sugar, acidity and sugar-acid ratio of the fruits in the fruit tasting are the most common analysis indexes, and also one of the factors that can best measure the taste of fruits. In order to facilitate the farmers to understand the fruit quality, yunnan youke lvdu agricultural research institute specially launched several kinds of high-precision, portable and affordable sugar acidity detection instruments for different fruits (Japan aituo, made in the original place).
Meaning of test value:
Brix% (sugar content) : represents the weight and percentage of sucrose in 100g sucrose solution. It measures the total soluble solids in the solution, namely the total sugar concentration.
Acid: the total Acid in the sample is tested according to the principle of conductivity and converted into citric Acid (citrus), tartaric Acid (grape) and malic Acid (apple) concentration.
1. Measurement of sugar acidity of citrus fruits
The measured values of different tree ages of customers in a base planting iced tangerine orange in the turning period are as follows:
The change trend chart is as follows:
Through the measurement of sugar and acid all-in-one machine, the sugar, acidity and sugar and acid ratio of fruits of different ages in the turning stage are different. Therefore, we can make preparations in advance according to the measurement data and select timely harvest to make the fruit taste the best when it reaches the hands of consumers.
2. Measurement of sugar acidity of tomato fruits
3. Measurement of sugar acidity of grape fruits
The sun rose Different sugar and acid ratios, different valences.
4. Measurement of sugar acidity of apple fruits
5. Acidity measurement of strawberry sugar
6. Polyfructosic acid all-in-one machine measurement
7. Comparison between multiple fruit measurement and single fruit measurement.
By measuring the result analysis shows that special all-in-one and citrus fruit acid as measured on the same citrus fruit sugar acid machine there are some differences in measurement data, but we can see from the picture the measurement standard error of plus or minus, i.e. according to the statistics of "the principle of minimum probability event no possibility", its error is negligible, so the measurement result is accurate. In actual fruit measurement, the most important thing we should do is to find out the change law of fruit sugar and acidity, and then give reasonable nutrition scheme and farming operation.
The sugar and acid all-in-one machine is used more and more in the fruit tasting, which indicates the development of China's fruit industry is becoming more and more standardized, the fruit we eat will be more nutritious, more healthy, more assured!