Seasonal variation of yield and composition in extracts from immature and mature Eucalyptus bosistoana leaves

Author:

Rajapaksha Chamira1ORCID,Apiolaza Luis Alejandro1ORCID,Squire Marie A.2ORCID,Altaner Clemens1ORCID

Affiliation:

1. School of Forestry, Te Kura Ngahere University of Canterbury Christchurch New Zealand

2. School of Physical and Chemical Sciences, Te Kura Matū University of Canterbury Christchurch New Zealand

Abstract

AbstractSeasonal variations of yield and composition in microwave extracts from mature and immature Eucalyptus bosistoana leaves were monitored for 2 years. The highest yield (average 16.7 μL/g (fresh)) and percentage of 1,8‐cineole (average 67.1%) were obtained from the leaves collected during summer and the lowest during winter. Mature leaves contained a significantly higher (p ≤ .001) proportion of 1,8‐cineole in their extract (60.9%) than immature leaves (44.6%). Total yield ranged from 3.0 to 27.0 μL/g (fresh) in mature leaves and from 6.0 to 26.7 μL/g (fresh) in immature leaves. Significant differences between half‐sibling families were observed, indicating genetic control of these traits. E. bosistoana leaf extracts could be comparable in quality and quantity to that of E. globulus, the species dominating global essential eucalyptus oil production. Oil quality and quantity could be optimized by harvesting mature leaves during summer from superior families.

Publisher

Wiley

Subject

General Chemistry,Food Science

Reference46 articles.

1. Durable hardwood peeler pole plantations. A new growing regime for eucalypts;Millen P;NZ Tree Grower,2020

2. Eucalyptus

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