The use of low-temperature refrigerated foods can inhibit the growth of microorganisms, preserve the flavor and nutrients of foods, and the original nature and freshness of foods. Low temperature refrigeration, also known as food cold processing, includes four processes of cooling, freezing, freezing, and thawing. The temperature at which the general food is cooled is ±4°C to 0°C. Freezing refers to freezing the moisture contained in the food into ice, usually at -8 °C. It is then preserved in the case of ice.
Freeze-drying is a drying method in which the raw material is removed from the frozen ice crystals directly into water vapor under vacuum conditions. It can effectively prevent the oxidation and deterioration of heat sensitive substances, prevent the surface of the product from hardening, enhance the rehydration, and maximize the original quality of the food. This technology is now widely used in the production of frozen foods.
Vacuum freeze-drying technology, referred to as freeze-drying technology, is the world's best food processing technology, which can retain the color, fragrance, taste, shape and nutrients of the product to the utmost extent. After packaging, it can be degraded at room temperature for five years. After rehydration, it looks like fresh. This technical device can process any food and medicine. After sublimation, it becomes a freeze-dried food.
Whitening supplements usually refer to nutritional supplements or food ingredients that can help improve uneven skin tone, reduce dark spots, and enhance skin brightness, thus achieving whitening effects. These components usually work by antioxidants, inhibiting melanin production, promoting melanin breakdown, or accelerating epidermal metabolism.
A powerful antioxidant, can inhibit tyrosinase activity, reduce melanin production, while promoting collagen synthesis, improve skin quality.
It is an endogenous antioxidant that can be used orally or topically to help reduce pigmentation and improve skin brightness.
It can prevent the transfer of melanin to the skin surface, reduce the formation of stains, and has anti-inflammatory and moisturizing effects, improve skin barrier function.
A powerful antioxidant that can work with other antioxidants such as vitamins C and E to enhance the whitening effect.
Natural extract, can inhibit tyrosinase activity, reduce melanin production, commonly found in whitening skin care products.
With antioxidant properties, can prevent skin damage caused by ultraviolet light, indirectly help whitening.
Although the direct whitening effect is limited, it can improve the elasticity and water retention of the skin, making the skin look fuller and brighter.
It is important to note that the effectiveness of whitening supplements varies from person to person, and usually requires a combination of good sun protection and reasonable lifestyle habits (such as adequate sleep, balanced diet, moderate exercise) to achieve the best results. When choosing a whitening supplement, it is recommended to consult a professional to ensure safety and suitability.
Here are some common whitening supplements:
1. Vitamin C (Ascorbic acid)
2. Glutathione
3. Niacinamide (vitamin B3)
4. Lipoic acid
5. Arbutin
6. Polyphenols (such as green tea extract, grape seed extract)
7. Collagen peptide
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