Title:
Temporal Variation of Labdanum Gum Extraction from Cistus Ladanifer in the Supramediterranean Stage of Spain
Author(s):
Cano-Shaw, C., Plaza, J., Bautista Carrrascosa, I., Parra, L., Jiménez, M., Mauri, P.V.
Document(s):
Paper
Poster
Abstract:
The labdanum gum is one of the bioproducts obtained from the Cistus ladanifer. This labdanum gum has a high value in different industries, mainly perfumery and cosmetics. Its collection is generally done manually due to the plant is harvested in summer, and the regulations interdict the use of machinery due to the risk of wildfires. With the aim of evaluating the profitability of harvesting of C. ladanifer in another period in which the use of machinery is allowed, in this paper, we analyzed the temporal variation of extracted gum in summer and autumn. Young and old individuals of C. ladanifer were collected in two locations in the centre of Spain from the end of July to the beginning of October 2021. Individuals were harvested every 14 days to analyze if there was any tendency in obtained labdanum gum. The labdanum gum was obtained by immersing the aerial part of the plant in hot carbonated water with a posterior neutralization of the filtered liquid. After the neutralization, flocs appear and are separated by decanting and filtering the extracted compounds. The labdanum gum (the flocs) is left dry until reaching a constant weight. The results indicate that young individuals have a higher variation of obtained labdanum gum with time. The maximum obtention of labdanum gum occurs in July. Young individuals have an average extraction of 6.2 g/100g of dry material. Meanwhile, the variation of labdanum gum detected is lower for old individuals, with average extraction of 5.4 g/100g of dry material.
Keywords:
biomass, biomaterial, rockrose, rural areas, mediterranean shrub
Topic:
Sustainable Resources for Decarbonising the Economy
Subtopic:
Agroforestry residues and by-products
Event:
30th European Biomass Conference and Exhibition
Session:
1DV.1.9
Pages:
254 - 257
ISBN:
978-88-89407-22-6
Paper DOI:
10.5071/30thEUBCE2022-1DV.1.9
Price:
FREE
