From research it has been found that pine needles (pine leaves) contain mostly polymer (a substance) called lignocellulose. This compound can be broken down into sugars and other substances and used as sweeteners, vinegar, paint, and adhesives. Best of all, the process of converting pine needles into these products is cost-effective, environmentally friendly, and creates zero waste.
Pine needle extracts are added to foods as natural preservatives to maintain freshness. In addition to preserving food freshness, pine needle extract could also add nutritional value. Pine needles, cones, bark, and oil are used as food or food ingredients in some European and Asian countries.
Pine needles are a rich source of antioxidants, including flavonoids and phenolic compounds, as well as vitamins C and A. Pine needle tea was mostly used as a decongestant and cough medicine.
Nowadays, pine needle tea is generally recommended for sore throats and as a home remedy for colds and flu. Pine oil and extracts, which are extracted from pine needles, are used widely in cleaning products, disinfectants, and air fresheners.