Scientific Analysis: Adsorption Mechanisms of Chitonova-60 FG
EXECUTIVE SUMMARY This technical report details the physicochemical mechanisms by which Chitosan Global’s new product, Chitonova-60 FG (Food Grade), effectively adsorbs microplastics, glyphosate, and other negatively charged contaminants in the human gastrointestinal tract. The product’s efficacy is driven by its exceptionally high positive surface charge (Zeta Potential > +60mV) upon protonation in the gastric environment. When consumed at a dosage of 1200 mg, 15 minutes prior to a meal, Chitonova-60 FG functions as a high-density polycationic adsorbent, facilitating the rapid aggregation and subsequent excretion of anionic pollutants through electrostatic attraction, chelation, and hydrogen bonding. INTRODUCTION TO CHITOSAN AND CHITONOVA-60 FG Product Identity: Chitonova-60 FG CAS Number: 9012-76-4 Chemical Nature: Linear polysaccharide composed of β-(1→4)-linked D-glucosamine (deacetylated unit) and N-acetyl-D-glucosamine (acetylated unit). Chitonova-60 FG is a specialized native chitosan derivative engineered to maintain high molecular integrity and surface charge density. Unlike standard commercial chitosan, which typically exhibits a zeta potential of +30 to +40 mV, Chitonova-60 FG is characterized by a high degree of deacetylation (DDA) and specific molecular weight distribution that yields a zeta potential of approximately +60 mV in acidic media. This high charge density is the critical determinant of its superior adsorption capacity. THE SCIENCE  OF  POSITIVE  SURFACE  CHARGE  (60MV ZETA POTENTIAL) The adsorption capability of Chitonova-60 FG is fundamentally rooted in its amine chemistry. In the low pH environment of the stomach (pH 1.5–3.5), the primary amine groups (-NH2) on the glucosamine units undergo protonation: Protonation Reaction: R-NH2 + H3O+ → R-NH3+ + H2O This reaction transforms the biopolymer into a polycationic electrolyte. The resultant +60mV zeta potential indicates a highly stable suspension with strong repulsive forces between polymer chains (preventing immediate precipitation) and potent attractive forces toward oppositely charged particles. This electrostatic potential is significantly higher than the threshold required for effective coagulation of suspended solids, making it a powerful bio-flocculant within the digestive tract. MECHANISM 1: MICROPLASTIC ADSORPTION Microplastics (MPs), particularly secondary MPs derived from the degradation of macroplastics, predominantly carry a negative surface charge due to surface oxidation and the adsorption of organic matter. Common polymers like polystyrene (PS) and polyethylene terephthalate (PET) exhibit negative zeta potentials ranging from -15 to -50 mV. Mode of Action: Electrostatic Bridging Charge Neutralization: The strongly positive ammonium groups (-NH3+) of Chitonova-60 FG are electrostatically attracted to the anionic surface of microplastics. Bridging Flocculation: The long polymer chains of Chitonova-60 FG adsorb onto multiple microplastic particles simultaneously, forming large aggregates (flocs) that are too large to be absorbed by the intestinal villi. Recent studies (2025) indicate that chitosan ingestion can increase the fecal excretion rate of polyethylene microplastics to over 115% compared to controls (indicating removal of both ingested and pre-existing MPs) and reduce intestinal retention by approximately 50%. MECHANISM 2: GLYPHOSATE BINDING Glyphosate [N-(phosphonomethyl)glycine] is an amphoteric herbicide that acts as a negatively charged species in many physiological conditions due to its phosphonate and carboxylate groups. Binding Interactions Electrostatic Attraction: At gastric pH, while glyphosate is partially protonated, its anionic phosphonate moiety interacts strongly with the cationic amine sites of Chitonova-60 FG. Chelation: Chitosan acts as a chelating The nitrogen on the amine group and oxygen on hydroxyl groups form coordinate bonds with the glyphosate molecule. Hydrogen Bonding: Extensive hydrogen bond networks form between the hydroxyl (-OH) groups of the chitosan backbone and the oxygen atoms in glyphosate. Research indicates that chitosan-based adsorbents can achieve removal efficiencies of 80–93% for glyphosate in aqueous environments, driven by these synergistic binding mechanisms. MECHANISM 3:  GENERAL  NEGATIVELY  CHARGED COMPOUND ADSORPTION The +60mV charge of Chitonova-60 FG provides broad-spectrum adsorption capabilities for various anionic contaminants found in the modern diet. Bile Acids: Chitosan binds bile acids (which are anionic surfactants) in the stomach to form insoluble polyelectrolyte complexes. This prevents the reabsorption of bile acids in the ileum (enterohepatic circulation), forcing the liver to use systemic cholesterol to synthesize new bile, thereby lowering serum cholesterol. Heavy Metals: Anionic metal complexes and free cations (Pb2+, Cd2+, Hg2+) are sequestered via chelation mechanisms involving the amine lone pair electrons. Anionic Dyes and Metabolites: Food colorants and negatively charged metabolic waste products are effectively adsorbed via electrostatic attraction. WHY 15 MINUTES BEFORE MEALS IS OPTIMAL The timing of administration is critical to the physicochemical activation of the product. Solubilization & Protonation Phase (0-10 mins): Upon entering the acidic gastric lumen, the 1200 mg dose of Chitonova-60 FG requires time to hydrate, dissolve, and undergo full amine protonation to achieve the active -NH3+ Dispersion & Matrix Formation (10-15 mins): The dissolved chitosan disperses throughout the gastric fluid, forming a viscous “molecular net” or weak gel matrix. By consuming the product 15 minutes before eating, the chitosan is fully activated and spatially distributed to intercept the food bolus. This ensures that microplastics and contaminants released from the food matrix during digestion are immediately captured by the pre-established cationic network. GASTROINTESTINAL JOURNEY: PH-DEPENDENT BEHAVIOR 1. Stomach (pH 1.5 – 3.5) State: Soluble Polycation. Activity: Maximum charge density (+60mV). Rapid electrostatic binding occurs here. The chitosan remains in solution, coating food particles and binding free contaminants. 2. Small Intestine (pH 6.0 – 7.4) State: Gel/Precipitate Transition. Activity: As pH rises above chitosan’s pKa (~6.3-6.5), deprotonation begins. The polymer transitions from a soluble state to insoluble gel aggregates. Importantly, the contaminants bound in the stomach are trapped within this precipitating gel matrix. The transition locks the pollutants inside the flocculated chitosan structure, preventing desorption. 3. Colon (pH 5.5 – 7.0) State: Solid Aggregate. Activity: The chitosan-contaminant complex remains intact as an indigestible fiber mass. It increases fecal bulk and is excreted, carrying the adsorbed microplastics and toxins out of the body. WHY THIS WORKS SO WELL: SYNERGISTIC FACTORS The superior performance of Chitonova-60 FG is attributed to the synergy of three factors: High Zeta Potential (+60mV): Provides a stronger attractive force than standard chitosan products, extending the effective range of electrostatic capture. High Surface Area: The specific manufacturing process of the “FG” grade ensures a porous molecular structure upon hydration, offering more
