Characterization and determination of the quality of rosins and turpentines extracted from Pinus oocarpa and Pinus patula resin

Abstract

Rosins and turpentines present in pine resins have been widely used both industrially (coatings, electronics and paint) and pharmaceuticals (ointments). Among the main components of these matrices is abietic acid. This study focuses on the characterization and evaluation of the quality of rosins and turpentines in addition to the quantification of abietic acid in rosins. Rosin and spirit of turpentine were obtained separately through the distillation method from P patula and P. oocarpa resin, species grown in the Department of Cauca-Colombia. Resin-tapping was made using the traditional method (cup and gutter). Quality indicators were determined according to ASTM standards. Solubility tests and identification of functional groups were performed on the obtained rosin by ultraviolet-visible spectroscopy (UV-Vis), infrared (IR) and nuclear magnetic resonance ( 1 H-NMR). The abietic acid present in the rosins was determined by high performance liquid chromatography (HPLC). According to their high acid value and low percentage of unsaponifiable matter, the extracted rosins are considered of medium-high quality. Quantification of abietic acid by HPLC showed 14.85 ± 0.24% and 16.09 ± 0.11% for P. patula and P. oocarpa rosin respectively.

Lewis acidic deep eutectic solvents as catalysts for rosin polymerization

“…3 Therefore, it is widely modified to enhance its use in many industrial applications such as coatings, adhesive agents, printing ink, papermaking, rubber, food additives, and biomaterials. [4][5][6][7] On the other hand, resin acids can undergo isomerization at high temperatures. 8 This special property is more conductive to the modification of rosin.…”

From rosin to novel bio-based silicone rubber: a review

“…[46][47][48] Rosin derivatives can be obtained by modifying the double bonds and carboxyl double bonds. [49][50][51] The double bonds can be used for polymerization ( polymerized rosin), hydrogenation (hydrogenated rosin) and disproportionation (disproportionated rosin), while the carboxyl groups can be esterified (ethylene esterification), or undergo acid-base neutralization (alkaline earth metal resin salt) and hydrogenolysis (rosin alcohol). [52][53][54] For example, rosin can be used in the food industry as a food additive because of its toughness and non-toxicity.…”

Altitudinal Genetic Variation of Pinus oocarpa Seedling Emergence in the Southern Mountains, Oaxaca, Mexico

“…The wood of this pine, due to its hardness, is used in construction, furniture, pulp, particleboard and plywood [2]. However, in Mexico, this pine is of greater importance due to the high production and quality of its resin, which is produced in natural forests [2][3][4][5]. In Mexico, pine resin is the main non-timber forest product; however, demand is greater than production [3].…”