Structural Characterization, Technological Functionality, and Physiological Aspects of Fungal β-D-glucans: A Review

Area of Science:

• Biochemistry
• Food Science
• Immunology

Background:

• Beta-D-glucans are (1→3)-linked glucose polymers with (1→6)-linked side chains, crucial for fungal cell wall integrity.
• These compounds possess valuable physico-chemical properties, leading to their use as food and pharmaceutical adjuvants.
• Extraction methods significantly influence the properties and functionality of beta-glucans.

Purpose of the Study:

• To review the prebiotic potential of fungal beta-D-glucans.
• To detail extraction methodologies, structural characteristics, and techno-functional properties.
• To summarize the diverse biological effects of fungal beta-D-glucans.

Main Methods:

• Literature review focusing on extraction, characterization, and biological activities of fungal beta-D-glucans.
• Analysis of studies investigating the impact of isolation processes on beta-glucan properties.
• Synthesis of data on health benefits, including immunological and metabolic effects.

Main Results:

• Various extraction techniques yield beta-glucans with differing chemical compositions, solubilities, viscosities, and hydration properties.
• Fungal beta-D-glucans demonstrate significant immunological activity, including anti-cancer and anti-bacterial effects.
• In humans, beta-glucans contribute to reduced blood cholesterol, improved glucose absorption, and wound healing.

Conclusions:

• Fungal beta-D-glucans possess notable prebiotic potential.
• Understanding extraction and structure-property relationships is key to optimizing their application.
• Beta-glucans offer a broad spectrum of health benefits, underscoring their therapeutic and functional food value.