Category: Sustainable resources

Oyster shells are composed of over 95% calcium carbonate, a compound that is rich in elemental calcium. This makes them a highly concentrated and natural source of calcium, an essential mineral for both human and animal health. Understanding the exact composition of oyster shells helps clarify their potential for various sustainable and nutritional applications.

Native to Mexico, the blue agave plant, scientifically known as *Agave tequilana*, has been a cornerstone of local culture and economy for centuries, with its most famous use being the production of tequila. This resilient succulent offers a surprising array of applications that extend far beyond the distillery.

Fish processing waste can be up to 50% of the total catch, and this waste includes a surprising amount of valuable minerals. Fish bones are particularly rich in essential elements, with calcium and phosphorus being the most abundant minerals present.

Over 50% of a crab shell's weight can be attributed to its mineral content, with calcium carbonate being the dominant compound. But what are the minerals in crab shells beyond just calcium? This article breaks down the full mineral profile of these fascinating exoskeletons.

Red algae, or Rhodophyta, are among the oldest types of eukaryotic algae, with thousands of species having been used for centuries across various cultures. Understanding how do we use red algae today reveals its profound impact on human industries, health, and the health of marine ecosystems.

Over 30,000 metric tons of commercial alginate are produced globally each year, primarily sourced from brown seaweed. While brown algae are the most common source, the chemical structure and properties of alginate can vary significantly depending on the species and even environmental factors. To determine the best source of alginate, it is crucial to compare the yield, purity, and functional characteristics of different species and alternative production methods.

It is estimated that brown algae, or phaeophytes, are found in 18 families, with over 1500 known species globally. What do humans use brown algae for, and why have these marine organisms become such a valuable and versatile resource across numerous industries?