Physicochemical Passport of Nature: LogP and pKa Analysis of 30 Key Anti‑Infective Phytochemicals

19.02.2026 ARK: ark:/50966/s144

In modern pharmaceutical practice of the 21st century, it is time to finally remove phytochemistry from the realm of general statements and integrate it into the laboratory of applied pharmacokinetics. Every pharmacist, physician, or researcher who confronts the challenges of infectious diseases understands that the name of an herb or its traditional use carries no clinical weight if we do not know the fundamental physicochemical parameters of its active compounds. This article offers a rarely encountered and exceptionally valuable resource—a systematized database that provides a complete physicochemical profile of 30 of the most significant anti‑infective phytochemicals found in nature.

Instead of getting lost in descriptive narratives, we focus on the raw scientific information that determines the actual fate of a molecule within the human body. In this synthesized guide, you will find the specific LogP values that dictate the ability of these 30 substances to cross bacterial membranes, as well as their pKa constants, which define their stability and ionization in the various environments of the gastrointestinal tract. This transforms the material into a kind of “molecular passport,” enabling specialists to quickly assess which compounds possess the necessary lipophilicity for systemic action and which are limited by their hydrophilicity or specific ionization profile.

This material is designed as a tool for rapid professional reference, intended for individuals who value precision and seek clear answers regarding the bioavailability of natural antiseptics. Here, plant science meets the mathematical logic of drug design, providing students and professionals with reliable data on lipophilicity and solubility. In a world where antibiotic resistance demands new and precise solutions, understanding these physicochemical details is the only way to transform natural resources into predictable and effective therapeutic agents. The article serves as your professional guide through the complex world of phytochemical interactions, presented without unnecessary noise and with a direct focus on the facts that matter in real‑world practice.

Disclaimer and Important Scientific Clarifications

1. Informational Nature and Absence of Medical Advice

The information provided in this article is purely educational and theoretical. It does not constitute an official medical guideline, treatment protocol, or therapeutic recommendation. The description of the antimicrobial properties of phytochemicals must not be interpreted as encouragement for self‑treatment. The information should be used only in accordance with the platform’s terms of use.

2. Need for Professional Interpretation

Students and novice researchers must interpret the data solely under the direct supervision of their academic advisor or a certified expert in pharmacology and medicinal chemistry. Misinterpretation of molecular properties may lead to incorrect conclusions regarding the bioavailability and toxicity of the substances.

3. Data Accuracy and Risk of Errors

Despite the effort to achieve maximum precision, science is a dynamic field. LogP and pKa values may vary across different sources depending on the measurement methods used (experimental versus computational). The platform does not guarantee the complete absence of technical or factual errors and is not responsible for omissions in the presented information.

4. Non‑Exhaustive Content

The list of 30 substances is selective and not exhaustive. Phytochemistry encompasses thousands of compounds whose synergistic interactions (within the whole plant) can fundamentally alter the individual values presented here. Beyond the parameters discussed, dozens of other factors exist (molecular weight, number of rotatable bonds, metabolic clearance) that determine the efficacy of a substance.

5. Risk of Microbial Resistance

Uncontrolled use of substances with antimicrobial potential may contribute to the development of microbial resistance—one of the greatest global health challenges of our time. The information in this article is strictly prohibited from being used as a basis for creating homemade preparations or for replacing conventional antibiotic therapy prescribed by a physician.

6. Regulatory Status

Many of the phytochemicals mentioned are not approved as medicinal products by regulatory authorities and are in the research phase or classified as dietary supplements. Their safety and efficacy status has not been confirmed for all described applications.

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