Lemna, commonly known as duckweed, is a fast-growing aquatic plant that consists almost entirely of leaves. It is incredibly rich in RuBisCO and other functional proteins. The ROVITARIS technology extracts these proteins to create highly functional binding solutions for the food industry. This provides a sustainable, allergen-free, and highly scalable ingredient for the booming plant-based meat sector, utilizing a plant that requires minimal resources to cultivate.
Harvested Lemna leaves are mechanically pressed to extract a nutrient-dense green juice. This liquid undergoes centrifugation to remove insoluble fibers and chlorophyll (de-greening). The remaining soluble proteins are then isolated using isoelectric precipitation or ultrafiltration, and subsequently spray-dried into a neutral-tasting, highly functional protein powder capable of thermal gelling.
During the hop harvest for the brewing industry, only the cones are utilized, leaving behind massive quantities of leaves and fibrous vines (bines). Usually discarded or burned, these residues possess excellent tensile strength and acoustic properties. This project diverts hop farm waste, turning the lignocellulosic leaves and stems into structural and insulating building materials, thereby locking away carbon that would otherwise be released into the atmosphere.
Post-harvest hop leaves and vines are collected, dried to reduce moisture content, and mechanically shredded into uniform fibers. These fibers are mixed with natural, formaldehyde-free binders (such as bio-resins or mycelium). The mixture is then subjected to thermo-compression molding—pressing the fibers under high heat and pressure to form rigid, durable bio-composite boards.
Standard epoxy resins rely heavily on Bisphenol A (BPA), a petrochemical with known toxicity and environmental concerns. Plant leaves, galls, and bark are rich in tannic acid—a naturally occurring polyphenol with a highly aromatic structure. By utilizing tannic acid extracted from plant residues, chemists can synthesize fully bio-derived epoxy networks that offer equivalent thermomechanical strength, high char-yield (fire resistance), and eliminate the health risks associated with BPA.
Tannic acid is extracted from plant tissues using hot water or mild solvent maceration. The extracted tannins are then chemically reacted with epichlorohydrin (which itself can be synthesized from bio-glycerol) in the presence of an alkaline catalyst. This process "epoxidizes" the hydroxyl groups on the tannic acid molecule, yielding a viscous, prepolymer resin that can be cross-linked into a solid, durable thermoset plastic.
Unlike standard packaging which simply creates a barrier, "active packaging" interacts with the food to extend its shelf life. Guava leaves are highly potent in natural antioxidants, flavonoids, and antimicrobial agents. This project extracts these compounds from discarded guava leaves and incorporates them into a bioplastic matrix made of Polyvinyl Alcohol (PVA) and Gellan Gum. The resulting film not only biodegrades rapidly but actively inhibits food-spoiling pathogens.
Guava leaves are dried, pulverized, and subjected to ethanol extraction to isolate their phenolic compounds. Separately, a hydrocolloid solution is prepared by dissolving PVA and Gellan gum in water. The guava leaf extract is thoroughly homogenized into this polymer matrix along with a plasticizer like glycerol. The mixture is then poured into molds and solution-cast to form thin, active bioplastic sheets.
Sea buckthorn is a hardy shrub whose berries are harvested for juices and health foods. The remaining leaves and seeds are often underutilized but are a powerhouse of bioactive compounds, including rare Omega-7 fatty acids, Vitamin E, and powerful phytosterols. By extracting these oils from the leaves and seeds, the cosmetic industry taps into an incredible natural healing agent that replaces synthetic emollients in high-end skincare routines.
The leaves and seeds are dried to carefully preserve their nutrient profile. They are then processed using Supercritical CO2 Extraction. This low-temperature, solvent-free method pushes carbon dioxide through the biomass under high pressure, safely and cleanly isolating the fragile lipid fractions and volatile essential oils without leaving behind toxic chemical residues.
Coffee trees require regular pruning to remain productive, resulting in millions of tons of discarded leaves annually. Rather than letting them rot, this initiative upcycles the leaves into "Coffee Leaf Tea." These leaves contain significantly less caffeine than the beans but possess a high concentration of mangiferin and chlorogenic acids, which have powerful anti-inflammatory and metabolism-boosting properties. This innovation diversifies farmer revenue while providing a novel health beverage.
Fresh coffee leaves are pruned and immediately lightly withered to reduce moisture. Depending on the desired flavor profile (similar to green, oolong, or black tea), the leaves are subjected to controlled oxidation and rolling to break cell walls and release aromatic enzymes. Finally, the leaves are heat-roasted to stop oxidation and lock in the flavor before being packaged as loose-leaf tea or steeped for ready-to-drink beverages.
