Fishmeal is a high-protein feed that is dehydrated, dehydrated, and pulverized with one or more fish as raw materials. The quality of fishmeal is particularly important. How to distinguish between pure fishmeal and adulterated fishmeal, the following is a brief introduction:
Observation
The standard fishmeal is generally a powder with uniform particle size and slightly oily appearance. A large amount of loose fish powder fiber and a small amount of bone spurs, fish scales, fish eyes, etc. can be seen; the color is uniform, and it is light yellow, yellow brown or yellowish brown; The hand has a loose feeling, does not agglomerate, does not stick, does not form a group; has a strong grilled fish flavor, slightly fishy smell.
Floating method
Take a small sample into a clean glass cup, add 10 volumes of water, stir vigorously and let stand. Observe the surface floats and sediments on the water surface. If there are feather fragments or plant matter on the water surface or minerals such as sandstone on the bottom of the water, the quality of the fish meal is not good.
Combustion method
Whether or not a botanical substance is incorporated is determined based on the odor generated when the sample is burned. When the real product burns, it is the smell of burning hair. If there is aroma of dried and fried grains, it means that it is incorporated into plant matter.
Detection method
Microscopy is the most commonly used method to identify most adulterants. For example, the outer surface of the chaff of the chaff powder has vertical and horizontal stripes; the outer surface of the wheat bran has fine wrinkles on the outer surface, and some have wheat wool; the cottonseed cake has thicker cotton seed shell fragments, and the brown or white ribbon has a stepped shape. Some surfaces are covered with cotton; the rapeseed cake is reddish brown or black, thinner, and has a mesh surface; shell powder particles are square or irregular, grayish white, opaque or translucent; peanut shells are somewhat shaped or striped The protrusions are also serrated; the alkali-treated bone particles have small holes and the like. Laoting
Fruit and vegetable powder also means fruit and vegetable juice powder. The making method is about first crush the fruit and vegetable to juice, then vacuum concentrate it, and then use high temperature to spray it to powder. Do not add any flavors and artificial colors. To a great extend retain the nutrition, color and flavor of plants and fruits.
Products are widely used in food, beverage, cosmetics, medicine, health food and other fields.
Apple Fruit Extract,Green Apple Extract,Sea Buckthorn Powder,Pink Grapefruit Powder
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