Low Molecular Weight Citrus Pectin and Beauty
Low Molecular Weight Citrus Pectin, also known as Modified Citrus Pectin (MCP) or Low Molecular Citrus Pectin (LCP), is a galactose-rich, small-molecule, water-soluble dietary fiber polysaccharide extracted from the peel and inner membrane of citrus fruits (lemon, orange, mandarin, pomelo, etc.) using advanced biological enzymatic hydrolysis technology.
Zhejiang Gold Kropn Bio-tech Co., Ltd. has collaborated with Zhejiang University, Tianjin University, Fudan University, Xinxiang Medical University, and other institutions on research into MCP production processes and functional studies, and has been granted multiple national invention patents. Studies have shown that MCP of varying molecular weights and degrees of esterification can help boost human immunity, relieve constipation, and support beauty and detoxification benefits, among other functions. The company is currently the only MCP manufacturer in Asia, and one of only two in the world.
I. Mechanisms behind MCP's beauty and detoxification benefits
Dietary fiber supports healthy weight management MCP is a soluble dietary fiber. Because it is low in calories and highly satiating, the weight-management benefits of dietary fiber are widely recognized by nutritionists.
Pectin's excellent moisture-absorbing and moisturizing effect The hydroxyl, carboxyl, and other polar groups in MCP molecules can form hydrogen bonds with water molecules, binding large amounts of water. At the same time, MCP molecular chains interlink into a network structure, which, combined with hydrogen bonding to water, gives MCP a strong water-retaining effect. In addition, within the extracellular matrix, pectin combines with other polysaccharide components and fibrous proteins in the skin to form a hydrated extracellular gel-like matrix that supplies moisture to the skin. Pectin also has good film-forming properties, allowing it to form a uniform thin film over the surface of the skin that reduces surface water evaporation, allowing moisture to diffuse from the underlying tissue to the stratum corneum, further hydrating the stratum corneum and helping the skin retain its own moisture - completing a moisturizing effect. As a result, the combination of MCP's high water absorption and good film-forming properties makes it well suited to provide excellent moisturizing benefits, and MCP for topical use can serve as a good moisturizing ingredient.
MCP supports skin tissue repair MCP helps stimulate the production of various cell growth factors, supporting skin tissue repair by activating these growth factors.
MCP's detoxification effect may help address acne and dark spots Heavy metals, chemical residues, and other toxins that accumulate in the body can impede the normal circulation of qi and blood, consuming energy and fluids, and may even be released through the skin, making skin rough and dull, or contributing to acne, freckles, and dark spots. Various toxins can also act on the hypothalamic-pituitary-adrenal axis, increasing adrenocorticotropic hormone production and contributing to conditions such as age spots and melasma. As a result, cosmetic concerns such as acne, freckles, dark spots, age spots, melasma, bad breath, and weight gain are all associated with the accumulation of toxins in the body. In addition, harmful acidic substances such as lactic acid and urea produced during metabolism, once secreted onto the skin's surface through sweat, can cause the skin to lose vitality and elasticity - particularly on the face, which can become slack and prone to cracking or inflammation when exposed to cold or intense sun. MCP can selectively chelate heavy metals in the blood such as platinum, lead, mercury, chromium, and arsenic and promote their excretion from the body, while having no effect on essential trace elements such as iron and calcium. MCP also has antioxidant properties, which can support the body's detoxification and metabolic processes, helping to support disease prevention, general health, and skin condition.
MCP's anti-aging function The reducing hydroxyl groups in MCP's structure can capture the reactive oxygen species (ROS) generated during lipid peroxidation chain reactions, shortening the length of the lipid peroxidation chain. As a result, MCP can help block or slow the progression of lipid peroxidation, providing an antioxidant effect. MCP can also increase the activity of antioxidant enzymes such as SOD, CAT, and GSH-Px, further supporting its antioxidant function. Another important contributor to skin aging is the entry of intestinally derived toxins into the bloodstream, which can damage the function of tissues and organs. Most of these intestinally derived toxins are produced when E. coli break down certain components of food, and are often described as a major contributor to premature aging; pectin can adsorb these intestinal toxins, supporting an anti-aging effect.
MCP's benefits for vascular health and skin appearance MCP has anticoagulant and thrombolytic properties, related to the specific interaction between its negatively charged groups and clotting factors in the blood, which inhibits thrombin activity. When added to cosmetics, anticoagulant pectin absorbed through the skin can enter subcutaneous microvessels and bind with clotting factors there, lowering fibrinogen levels in the blood vessels, supporting healthy circulation, and helping nutrients reach the skin more efficiently via the microcirculation, thereby supporting healthy skin metabolism.
MCP's blood-pressure- and lipid-regulating effect may help prevent melasma MCP can adsorb cholesterol and help carry it out of the body, lowering blood cholesterol levels. This supports cardiovascular function and helps keep blood vessels elastic, supporting the normal supply of nutrients to the skin.
MCP's brightening effect MCP can help inhibit the peroxidation of unsaturated fatty acids in the body, reducing the production of lipofuscin, a peroxidation byproduct of unsaturated fatty acids; increased lipofuscin levels are associated with pigment deposition and the formation of dark spots. MCP's brightening effect is also related to its ability to absorb ultraviolet radiation across multiple wavebands, meaning it can also be used as an additive in sunscreen cosmetics.
MCP's antibacterial effect may help reduce blemishes MCP's antibacterial mechanism works by enhancing the antibacterial performance of lysozyme. MCP has good surface activity and can dissolve bacterial outer membranes, thereby supporting lysozyme's ability to break down bacteria - particularly gram-negative bacteria. As a result, MCP's antibacterial effect is broad-spectrum, capable of inhibiting both gram-positive and gram-negative bacteria.
II. Safety of MCP
MCP is recognized by the Food and Agriculture Organization (FAO) and the World Health Organization (WHO) as a safe ingredient with no specified upper limit on daily human intake.
Gold Kropn uses imported lemon peel from Argentina, which undergoes rinsing, dehydration, pesticide residue removal, and heavy metal testing at every stage of processing.
Production takes place in a Class 100,000 GMP-certified clean workshop, applying pharmaceutical-grade standards to food production, with strict controls at every step of the process. The company holds certifications including GMP, ISO 9001, ISO 22000, Kosher, and Halal, and does not use any non-food-grade chemical raw materials (such as colorants, flavorings, or additives) during processing.
MCP is extracted using patented biological enzymatic hydrolysis technology at an internationally leading level.
III. Domestic and international research progress
Numerous renowned scientists, universities, and research institutes around the world have conducted research on MCP.
Within China, research into low molecular weight pectin has been conducted by multiple universities since 2006, including Zhejiang University, Fudan University, Guangzhou Medical University, Tianjin University, and Xinxiang Medical University, among other institutions. Since 2012, Gold Kropn has collaborated with Zhejiang University and Fudan University on a series of functional studies of low molecular weight pectin, including its applications in inhibiting breast cancer, removing heavy metals, and supporting beauty and moisturizing benefits, all of which produced favorable results.
In 2017, Gold Kropn partnered with a U.S. company to conduct a clinical trial in Europe examining low molecular weight pectin as an intestinal prebiotic. The trial results confirmed that MCP promotes the growth of beneficial gut bacteria, with an effect that takes hold more than twice as fast as ordinary pectin. Detailed trial results are included in a new patent application to be filed at a later date.
IV. Recommended daily intake: 1.5–3 g/day, taken before meals.
