The types dimension of market taxonomy classifies Biological Preservatives into bacteriocins, enzymes, organic acids, antimicrobial peptides, and fermentation‑derived compounds. Bacteriocins, proteinaceous toxins produced by lactic acid bacteria, are valued for their narrow‑spectrum activity and are predominantly employed in dairy and meat preservation, contributing significantly to the Food & Beverages slice. Enzymatic preservatives, such as lysozyme, provide broad‑spectrum antimicrobial action and are integrated into both food matrices and cosmetic formulations, supporting cross‑segment growth. Organic acids (e.g., lactic, acetic) serve as pH modifiers and microbial inhibitors, underpinning a large share of the Pharmaceuticals and Agriculture applications due to their regulatory acceptance. Antimicrobial peptides, synthesized via recombinant techniques, offer high potency with low toxicity, increasingly attracting investment in high‑value pharmaceutical products. Fermentation‑derived compounds, encompassing a range of metabolites, enable cost‑effective scaling for bulk food preservation. Each type’s functional profile and regulatory pathway shape its contribution to overall market size within the Biological Preservative segmentation.