Comparison of Rosmarinic Acid Grades for Antioxidant Efficiency and Odor Control
คำถาม
Please compare the differences between Pure-Rosmarinic90™ (Rosmarinic Acid 90%), Pure-Rosmarinic80™ (Rosmarinic Acid 80%), and Rosemary Extract (Rosmarinic Acid 10%, Powder) regarding the following points:
- How do the different percentages of Rosmarinic Acid affect the efficiency of preventing oxidation in cosmetic formulations?
- Which option is most suitable for a powder-form ingredient with a low odor profile?
คำตอบ
Comparing the different grades of Rosmarinic Acid for cosmetic formulations:
1. Comparison of Rosmarinic Acid Concentration
- Pure-Rosmarinic90™ (90%): This is the highest purity grade. It provides the maximum antioxidant activity per unit of weight. Because it is highly refined, it contains the least amount of plant impurities.
- Pure-Rosmarinic80™ (80%): A high-purity grade that offers excellent antioxidant protection, slightly less concentrated than the 90% version but still significantly more potent than standard extracts.
- Rosemary Extract (10% Powder): This grade contains a much lower concentration of the active antioxidant. To achieve the same level of protection as the 90% version, you would need to use 9 times more material, which can affect the color and texture of your formula.
2. Impact on Antioxidant Efficiency
The percentage of Rosmarinic Acid directly correlates with its ability to prevent oxidation (rancidity) in oils and protect the skin from oxidative stress.
- Higher Purity (80-90%): More effective at lower inclusion rates. It is highly efficient at stabilizing sensitive oils and active ingredients in a formula.
- Lower Purity (10%): Requires higher usage levels, which may introduce more non-active plant matter into the formulation.
3. Odor and Color
This is the most significant difference for cosmetic elegance:
- Pure-Rosmarinic90™ and Pure-Rosmarinic80™: These are the best choices for low-odor requirements. The purification process removes most of the volatile organic compounds (essential oils, terpenes) responsible for the strong, characteristic "herbal" scent of rosemary. They are nearly odorless in the final formulation.
- Rosemary Extract (10%): Typically retains a strong herbal scent and a darker color because it contains more of the original plant components.
Recommendation
If your goal is to prevent oxidation in a cosmetic formula while maintaining a neutral scent and using a powder form, the best options are:
- Pure-Rosmarinic90™: Best for maximum potency and the cleanest scent profile.
- Pure-Rosmarinic80™: An excellent high-potency alternative that also offers very low odor.
Both are superior to a 10% extract when you want to avoid the strong smell of rosemary in your product.
Usage Tip: Rosmarinic acid is water-soluble. If you are using it to protect an oil-only (anhydrous) system, you may need to use a specialized version like Micromul™ Rosmarinic, which is a microemulsion designed for better dispersion.
