The Evaluation of Lipids Raw Material Resources with the Fatty Acid Profile and Morphological Characteristics of Idesia polycarpa Maxim. var. vestita Diels Fruit in Harvesting
Idesia polycarpa Maxim. var. vestita Diels belonging to Salicaceae family, is a perennial woody plant. It is well known to be rich in oils and fat, what’s more it is considered to be an industrially valuable oilseed crop grown in the subtropics and warm temperate zone regions. The aim of this paper is to systematically study the oil fatty acid profile and morphological characteristics of fruit of I. polycarpa collected from various regions to evaluate the degree of change in oil content and fatty acid composition in order to better use it as a source of linoleic acid for industrial use. The results showed the dry weight of the fruit, the seed yield per fruit, and the weight of the seed are positively correlated with the oil content. Moreover, our study found that the sum of the oil content of the pulp and the seed was not significantly different from the oil content of the entire fruit. The oil content of the fruit ranged from 21.27% to 39.15%. In fruit oil, linoleic acid is the main fatty acid, and the linoleic acid content in all regions is above 60%, which is not affected by the size of the fruit. The results of this study indicated that I. polycarpa is a potential woody oil crop rich in linoleic acid and its oils have industrial potentialities, such as in production of alkyne resin, shoe polish, preparation of conjugated linoleic acid and varnishes. The results of the study can help us to use targeted fruit collection during fruit ripening and to guide us to use the fruit to develop industrial by-products preparation.