The beauty and wellness industries are on a growing trend of evidence-based natural ingredients. Standardising water-soluble ingredients takes engineering and a deep understanding of botanical science.
This article describes the scientific standards for standardising these plant compounds so that manufacturers can be confident of the quality of the ingredients they are using in their final products.
Mastering the solvent extraction process
Standardising water-soluble phytochemicals is the first step to using carefully controlled methods of extraction. Instead of harsh, synthetic chemicals, top companies use purified water and organic ethanol blends that are temperature-controlled. Technicians can capture the delicate phytochemicals by adjusting the pressure, temperature and length of time for the extraction.
Advanced filtration and molecular purification
Once the extract is obtained, a lot of filtration and purification have to be performed to remove plant debris or heavy metals. Modern facilities use multi-stage membrane filtration systems that are tuneable for separating the molecules by weight and size. This allows the company to focus on the water-soluble phytochemicals they are aiming for and remove inactive compounds.
Validation of high-performance liquid chromatography analysis
High-performance liquid chromatography is the gold standard for standardisation and is used to analyse the concentration of phytochemicals in each batch. This allows chemists to separate, identify and quantify the specific active molecules present in the water-soluble extract. Each extract will be tested to a strict spec sheet by a leading company, which will ensure the levels of markers are in a narrow range.
Managing seasonal and geographic variability
Botanical raw materials are notoriously inconsistent, as factors such as soil quality can alter the chemical profile of the plant. Choosing a premier herbal extract company does this by working directly with local growers and maintaining strict harvesting protocols. If the company understands the crop’s natural variation, it can adjust its processing parameters accordingly, normalising the output.
Stabilising phytochemicals in aqueous solutions
Water-soluble phytochemicals are frequently unstable in nature and oxidise or degrade under the influence of light or pH changes. This has led to the addition of stabilising agents by leading herbal companies or the use of micro-encapsulation techniques, which protect the active molecules. These strategies retain the biological activity of the phytochemicals during storage and shipping.
Rigorous microbiological and stability testing
Standardised ingredients also need to be free from microbial contamination, in addition to their chemical potency, to be used in cosmetic and wellness products. All batches are subjected to a full panel of testing to confirm the batch remains stable in a preservative-ready state. These ingredients undergo accelerated ageing stability tests that simulate storage under different temperatures.
Transparent documentation and certificate of analysis
Keep in mind that the final stage in standardisation is a detailed Certificate of Analysis (CoA) for every batch of extract. This document is the card for the ingredient providing phytochemical concentration, purity and safety profile. For a manufacturer, this transparency is invaluable as it eliminates the need to test over and over again and provides a direct link back to the root of the ingredient.
Quality assurance audits and regulatory compliance
High-quality and reliable standardisation requires regular third-party audits and compliance with international regulatory standards. They bring in outside experts to review the facilities and processes to make sure the internal protocols are up to global safety standards. This overall control makes each stage uniform, compliant and trustworthy, providing the maker with complete assurance.
Build your brand on proven science
The only way to ensure consistent, premium quality is to work with a standardised extract supplier. When you source ingredients backed by this degwater-soluble phytochemical ingredientsree of scientific rigour, you empower your own team to create products that will provide real, measurable results for your customers. Seek out vendors who are transparent about their extraction methods and willing to provide extensive analytical data.
