Why has Alkyl Polyglycoside become a popular choice for green surfactants?

2025-11-25 15:55:51

Driven by the global "dual carbon" goals and the concept of environmentally friendly consumption, the chemical industry is undergoing a profound "green revolution". As a fundamental raw material in industrial production and daily life, the green transformation of surfactants is particularly urgent. Among numerous new Surfactants, Alkyl Polyglycoside (APG) has stood out from the competition of traditional petroleum-based surfactants with its unique molecular structure and excellent performance, becoming a "new favorite" in multiple fields such as food, daily chemicals, and medicine. Then, why can APG rise rapidly in the field of green surfactants and become a hot choice attracting industry attention? The answer lies in the synergistic effect of its raw material sources, chemical properties, application advantages, and environmental value.

The naturality and renewability of raw materials are the primary cornerstones for APG to establish its "green" positioning and also its core advantage distinguishing it from traditional surfactants. Traditional surfactants, such as Sodium Dodecyl Benzene Sulfonate (LAS) and Fatty Alcohol Polyoxyethylene Ether (AEO), mostly use petroleum as the core raw material. They not only face the potential risk of petroleum resource depletion, but also the pollutants generated during their production process will exert pressure on the ecological environment. However, the production raw materials of APG are entirely derived from natural and renewable resources: the "alkyl" part in its molecular structure comes from natural vegetable oils like coconut oil and palm oil, while the "glycoside" part is derived from glucose obtained by hydrolyzing starch from crops such as corn and tubers. These raw materials are widely distributed around the world and can be continuously supplied through agricultural cultivation, cutting off the reliance on non-renewable petroleum resources from the source. More importantly, the use of natural raw materials has significantly reduced pollutant emissions during the production process. Relevant data shows that the Chemical Oxygen Demand (COD) emission during APG production is only 1/5 of that of traditional petroleum-based surfactants, providing a guarantee for green production from the upstream of the industrial chain.

Excellent biodegradability is a key characteristic for APG to fulfill its environmental protection mission and an important basis for it to gain industry recognition. The biodegradability of surfactants is directly related to their environmental residue problems after use. Due to their stable molecular structure, traditional surfactants are difficult to be decomposed by microorganisms in the natural environment, and are prone to accumulate in water bodies and soil, causing environmental issues such as water eutrophication and soil compaction. However, the glycosidic bond in APG's molecular structure is easily decomposed by microbial enzymes in nature, and its degradation process does not require special conditions, which can be completed in ordinary soil or water environments. According to the testing standard of GB/T 15818-2021 "Test Method for Biodegradability of Surfactants", the biodegradation rate of APG can reach more than 98%, and the degradation products are carbon dioxide, water, and a small amount of natural small-molecule organic substances, which will not cause secondary pollution to the ecosystem. This characteristic makes it fully comply with strict international environmental standards such as the EU REACH Regulation and the US EPA Environmental Standards, becoming a priority choice in the formulations of export-oriented enterprises and also providing strong support for domestic enterprises to cope with increasingly strict environmental policies.

The mild and non-irritating property enables APG to demonstrate irreplaceable advantages in fields that are in direct contact with the human body, further expanding its application boundaries. The irritation of surfactants is a core indicator of concern in fields such as daily chemicals and medicine. Traditional surfactants contain strong polar groups in their molecular structures, which easily damage the sebum membrane on the skin surface, leading to dry skin, itching, and even allergies. However, the polyhydroxyl structure of the glucose unit in APG's molecular structure endows it with good hydrophilicity and compatibility, which can form a mild interaction with the natural oils on the skin surface without damaging the skin barrier. Verified by skin irritation tests, the skin irritation index of APG is only 0.5 (the irritation index of traditional LAS is 3.2), and the eye irritation test also reaches the "non-irritating" level. This characteristic makes it shine in fields such as infant care products, sensitive skin care products, and medical disinfection products. For example, a well-known maternal and infant brand uses APG as the core surfactant in its baby body wash formula, replacing the traditional AEO. The product has been tested by dermatologists, and its irritation to the delicate skin of infants and young children has been reduced by 90%, quickly occupying the high-end maternal and infant care market after its launch. In oral care products, the mildness of APG is also fully reflected. When used as a toothpaste foaming agent, it can not only ensure a good cleaning effect but also avoid the irritation of traditional foaming agents to the oral mucosa, making it suitable for sensitive people such as patients with oral ulcers.

Excellent surface activity and versatility are the core competitiveness of APG to gain a firm foothold in industrial applications, endowing it with solid practical value beyond its green attributes. The core function of surfactants is to reduce surface tension and realize functions such as emulsification, dispersion, solubilization, and foaming, and APG performs particularly well in this core indicator. Its Critical Micelle Concentration (CMC) is low, only 0.05%-0.1%, which means that excellent surface activity can be achieved with a low addition amount, reducing the raw material cost of products. In terms of emulsification performance, APG can stabilize various systems such as oil-water and water-oil, and its emulsification stability is 1.8 times that of traditional AEO. When applied in fields such as pesticide emulsifiers and food additives, it can significantly improve the storage stability of products. In terms of detergency, APG has a good removal effect on oil stains, protein stains, starch stains, etc. Especially in hard water environments, its detergency is less affected by calcium and magnesium ions. After compounding with chelating agents, its detergency in the northern high-hardness water areas is more than 20% higher than that of traditional LAS. In addition, APG also has good compounding synergy. When compounded with anionic, non-ionic, and amphoteric surfactants, it can produce a "1+1>2" synergistic effect, which not only improves the overall performance of the product but also reduces the usage of other surfactants, further reducing irritation and environmental impact.

Broad application scenarios and policy support have provided a broad space for the market promotion of APG, accelerating its process of becoming a hot choice. From the perspective of application fields, APG has been widely used in various industries such as daily chemicals, food, medicine, agriculture, and industrial cleaning: in the daily chemical field, in addition to laundry detergent and body wash, it is also used in shampoo, facial cleanser, and other products. In an amino acid facial cleanser of a beauty brand, the addition ratio of APG reaches 12%, which not only ensures cleaning power but also avoids the high cost of amino acid surfactants; in the food industry, APG is used as a food emulsifier in bread, ice cream, and other products, which can improve food taste and shelf life and complies with the national food safety standard GB 2760; in the agricultural field, as a pesticide synergist, it can enhance the adhesion and permeability of pesticides on crop surfaces, reducing pesticide usage by 15%-20% and contributing to green agricultural development; in the industrial cleaning field, it is used in metal cleaning agents and electronic component cleaning agents, which can replace traditional cleaning agents containing phosphorus and chlorine, reducing the treatment difficulty of industrial wastewater. At the same time, policy support at the national level has also injected impetus into the development of APG. The "14th Five-Year Plan for the Development of Raw Material Industry" clearly proposes to "encourage the development of green chemical products such as bio-based surfactants". Many local governments have also included APG production projects in the green industry support catalog, providing policy preferences such as tax reductions and financial subsidies, and providing policy guarantees for its industrial upgrading.

Gradual cost optimization and continuous technological upgrading are important supports for APG to break through market barriers and realize large-scale application. In the early days, due to the complex production process and high difficulty in raw material purification, the production cost of APG was relatively high, which restricted its promotion in the mid-to-low-end market. However, with the continuous progress of catalytic technology and separation and purification technology in recent years, the production efficiency of APG has been significantly improved. For example, the application of new solid acid catalysts has increased the reaction conversion rate of glucose and fatty alcohol from 85% to 98%, reducing the generation of by-products; the introduction of membrane separation technology has simplified the product purification process, shortening the production cycle of high-purity APG by 30%. The progress of production technology has directly led to the reduction of costs. At present, the market price of APG has dropped to 1/3 of that in 2010, and the price gap with mid-to-high-end petroleum-based surfactants has narrowed to within 10%, and the cost-performance advantage has become increasingly prominent. At the same time, domestic enterprises such as Jiangsu Haixing Chemical and Zhejiang Huangma Technology have realized large-scale production of APG, with an annual production capacity exceeding 500,000 tons, breaking the technological monopoly of foreign enterprises, further reducing the procurement cost and supply risk of downstream enterprises, and laying an industrial foundation for its wide application.

The green transformation of consumption concepts and the upgrading of market demand have provided a strong market driving force for the development of APG, turning it from a "technical choice" to a "market rigid demand". With the improvement of residents' living standards, consumers have significantly increased their attention to the environmental protection and safety of products. "Phosphorus-free", "natural", and "degradable" have become core marketing selling points for products such as daily chemicals and food. In the laundry detergent market, data from an e-commerce platform shows that in 2024, the sales volume of laundry detergents marked with "containing APG" and "natural ingredients" increased by 87% year-on-year, far exceeding the 23% growth rate of traditional laundry detergents; in the skin care product market, the search volume of facial cleansing products containing "APG" increased by 120% annually, becoming a favorite among consumers with sensitive skin. This change in market demand has not only promoted the formula upgrading of downstream enterprises but also forced upstream raw material enterprises to increase R&D investment in APG, forming a virtuous cycle of "demand drives technology, technology promotes products, and products meet demand". In addition, in the industrial field, enterprises have also incorporated the use of green raw materials into their development strategies to fulfill social responsibilities and enhance brand image. As a representative of green surfactants, APG has naturally become the core choice for enterprises to adjust their formulations.

Of course, APG has become a hot choice not only relying on a single advantage, but on the organic combination of its multiple advantages such as natural raw materials, environmental protection characteristics, mild performance, and excellent efficacy, which exactly conforms to the current development trend of the green transformation of the chemical industry and the upgrading of market demand for safe and environmentally friendly products. Compared with other green surfactants, for example, biosurfactants have better environmental protection but higher cost; plant extracts such as saponin have the problem of unstable performance. However, APG has achieved a perfect balance among environmental protection, performance, and cost, which is its core competitiveness.

Looking forward to the future, with the further development of biotechnology and catalytic technology, the production process of APG will become more efficient and environmentally friendly, and the cost is expected to be further reduced. Its application fields will also expand to high-end medicine, biochemical engineering, and other fields. At the same time, under the background of increasingly tightened global environmental policies and continuous improvement of consumers' green awareness, the market demand for APG will maintain rapid growth, and its core position in the field of green surfactants will become more stable. From the natural renewability of raw materials to the complete degradation of products, from the mild use experience to the excellent application performance, APG interprets the connotation of "green chemical industry" with its own characteristics. It is the synergistic effect of these characteristics that makes it a popular choice for green surfactants, leading the surfactant industry to develop in a more environmentally friendly, safer, and more sustainable direction.