KR-20260063207-A - Method for increasing effective polyphenol components using high temperature and pressurized steam extraction method

Abstract

The present invention relates to an extraction method capable of increasing beneficial components, such as polyphenols and flavonoids, by utilizing a high-temperature, high-pressure steam extraction process. The high-temperature, high-pressure steam extraction process of the present invention can significantly increase the extraction content of beneficial components, such as protocatechuic acid and chlorogenic acid, along with gallic acid, a powerful antioxidant. Furthermore, it can effectively increase the extraction content of catechin and tannic acid, which are effective in inhibiting wrinkle formation. Since the extract obtained through this extraction method contains high concentrations of polyphenol and flavonoid components, the composition of the present invention containing said extract as an active ingredient can be usefully utilized as a cosmetic composition for various functional purposes, such as antioxidant, wrinkle improvement, and whitening.

Inventors

• 최문희
• 신현재

Assignees

• 주식회사 섬섬바이오

Dates

Publication Date

20260507

Application Date

20241030

Claims (5)

1. a) A step of washing and drying the raw material and then grinding it to a size of 0.3 to 0.7 mm; b) a step of extracting the extract by applying high-temperature steam under a pressure of 8 to 10 bar; and c) A method for preparing an extract with increased polyphenol and flavonoid content, comprising the step of filtering and concentrating the extract.
2. In paragraph 1, A method for producing an extract with increased polyphenol and flavonoid content, characterized in that the above raw material is one selected from the group consisting of camellia, red oak, cinnamon tree, and edible mushrooms.
3. In paragraph 1, A method for preparing an extract with increased polyphenol and flavonoid content, characterized in that the above polyphenol is one or more selected from the group consisting of 4-hydroxybenzoic acid, coumaric acid, rutin, naringenin, gallic acid, protocatechuic acid, chlorogenic acid, catechin, and tannic acid.
4. An extract with increased polyphenol and flavonoid content prepared by the method of any one of claims 1 to 3.
5. A cosmetic composition comprising the extract of claim 4 as an active ingredient.

Description

Method for increasing effective polyphenol components using high temperature and pressurized steam extraction method The present invention relates to an extraction method capable of increasing useful components such as polyphenols and flavonoids using a high-temperature, high-pressure steam extraction process. The skin is in direct contact with the external environment and functions to protect against temperature, humidity, antigens, and ultraviolet rays. However, as skin functions deteriorate due to physical and chemical stimuli such as external pollutants, UV rays, and stress, cell proliferation and immune activity weaken with age. Consequently, the skin is unable to rapidly repair damaged cells, leading to an overall deterioration of its components and resulting in wrinkles, loss of elasticity, and keratinization. Skin aging is broadly divided into intrinsic and extrinsic aging. Intrinsic aging is a naturally occurring aging phenomenon characterized clinically by decreased elasticity, rough skin texture, the formation of deep wrinkles, and pigmentation. Extrinsic aging is an aging phenomenon caused by external environmental factors such as ultraviolet rays, reactive oxygen species (ROS), and stress. Recently, rapid industrialization and the resulting air pollution and ozone layer depletion have led to an increase in UV levels. This generates powerful oxidizing agents, such as ROS, which cause the destruction of connective tissue formation (including skin collagen), inhibition of cell membrane function, promotion of DNA mutations, alteration of protein activity, and modification of intracellular signaling molecules. Consequently, these factors induce skin wrinkles and pigmentation, thereby causing skin aging. To prevent such skin damage, cosmetics and skin protectants containing various skin-protecting ingredients, such as retinol, retinoids, vitamin C, flavonoids, tocopherol, and coenzyme Q10, are being developed. In particular, ultraviolet (UV) rays from sunlight are a well-known cause of aging; prolonged exposure to UV rays causes the stratum corneum to thicken, and collagen and elastin, the main components of the skin, to denature, leading to a loss of skin elasticity. Collagen and elastin are regulated by various factors; the expression of matrix metalloproteases, such as collagenase and elastase, leads to the breakdown of these substances, resulting in a decrease in the collagen content within the skin. Various substances have been developed and used to inhibit the reduction of collagen and elastin, which are the causes of this loss of elasticity. Among them, retinol and retinoic acid demonstrate elasticity-improving effects, and protein fractions obtained from Leguminosae seeds are also applied to enhance elasticity. However, these retinoids have the disadvantage of being sensitive to skin irritation and allergies even when applied in minute amounts. Recently, in order to develop cosmetics that are relatively low in toxicity and eco-friendly, physiologically active substances such as those with whitening, anti-aging, anti-wrinkle, antioxidant, and anti-inflammatory properties are being identified through extraction processes and fermentation technologies using natural materials, and then utilized as cosmetic ingredients. In the present invention, while seeking an extraction method capable of extracting large quantities of useful components such as polyphenols and flavonoids, experiments were conducted by grinding natural raw materials into powder and applying a high-temperature and high-pressure extraction process to the powdered materials. As a result, the present invention was completed by confirming that the extracts produced through the high-temperature and high-pressure process had significantly increased polyphenol and flavonoid content compared to previously known extraction processes. Figure 1 is an extraction process diagram briefly showing the high-temperature, high-pressure steam extraction process of the present invention. The present invention is characterized by providing a method for preparing an extract with increased polyphenol and flavonoid content, comprising the steps of: a) washing and drying raw materials and then grinding them to a size of 0.3 to 0.7 mm; b) applying high-temperature steam under a pressure of 8 to 10 bar to extract the extract; and c) filtering the extract and then concentrating it. In step a) above, the raw material is various medicinal or edible plants that can be extracted. In one embodiment of the present invention, the raw material may be a camellia tree, a red oak tree, a cinnamon tree, or an edible mushroom, but the types are not specifically limited. The ' Camellia japonica L. ' mentioned in this specification belongs to the family Theaceae and is an evergreen broad-leaved small tree that grows in Gochang, Jeonbuk; Haenam, Wando, Gangjin, Yeosu, Gwangyang, Jeonnam; Geoje, Gyeongnam; the southern coastal region; and Jeju Island. It grows to a height of