Grape Seed Extract

Grape Seed Extract is a standardized botanical concentrate derived from the seeds of Vitis vinifera (wine grapes).

It is one of the richest natural sources of oligomeric proanthocyanidins (OPC) , a class of bioflavonoid compounds consisting of monomeric, dimeric, and oligomeric flavan-3-ols (catechin and epicatechin units). The extract is standardized to a minimum of 95% proanthocyanidins by UV-Vis spectrophotometry.

Proanthocyanidins are distinguished by their ability to bind and cross-link proteins, which underpins their unique bioactivities, including collagen stabilization, capillary integrity enhancement, and potent free radical scavenging activity. The oligomeric nature of these compounds influences their bioavailability and biological activity.

Grape Seed Extract (OPC 95%) is one of the most thoroughly studied botanical ingredients, with decades of clinical and pharmacological research supporting its use in cardiovascular health, skin health, joint support, and cognitive function applications.

Chức năng

• Hoạt tính chống oxy hóa: Potent free radical scavenging capacity, particularly against peroxyl radicals and superoxide anions.

• Ổn định collagen: Tạo liên kết chéo với collagen và elastin, giúp duy trì tính toàn vẹn của hệ mạch máu và cấu trúc lớp trung bì.

• Hỗ trợ hệ tim mạch: Tăng cường tuần hoàn vi mạch, tính thấm của mao mạch và trương lực tĩnh mạch.

• Anti‑inflammatory activity: Điều hòa chuỗi phản ứng của axit arachidonic và các con đường COX/LOX.

• Ức chế enzym: Ức chế các metalloproteinase ma trận (MMPs), elastase và hyaluronidase.

• Sức khỏe làn da: Supports skin elasticity, hydration, and UV protection.

Nguồn gốc và tiêu chuẩn hóa

• Nguồn: Seeds of Vitis vinifera (wine grapes)

• Chiết xuất: Water or hydroalcoholic extraction, followed by concentration and drying

• Tiêu chuẩn hóa: ≥95.0% proanthocyanidins (UV‑Vis)

• Biểu mẫu: Reddish‑brown to purple‑brown fine powder

Các câu hỏi thường gặp

Q: What is the difference between grape seed extract and grape skin extract?
A: Grape seed extract is rich in proanthocyanidins (OPC), while grape skin extract contains higher levels of resveratrol and anthocyanins. Both are beneficial but have different polyphenol profiles.

Q: What is OPC and why is it important?
A: OPC stands for oligomeric proanthocyanidins, a class of bioflavonoids with potent antioxidant activity. They help stabilize collagen, support cardiovascular health, and protect against oxidative stress.

Q: Is grape seed extract suitable for vegetarians?
A: Yes, grape seed extract is plant‑derived and suitable for vegetarian and vegan formulations.

Q: How is grape seed extract standardized?
A: Our grape seed extract is standardized to ≥95% proanthocyanidins by UV‑Vis spectrophotometry.

Q: What is the recommended dosage for cardiovascular support?
A: Clinical studies typically use 100 – 300 mg per day, standardized to ≥95% OPC.