EXPERIMENTAL STUDY CONCERNING THE CONTENTS OF WATER SOLUBLE EXTRACTIVES AND ASH AT BLACK LOCUST WOOD HARVESTED FROM TWO GEOGRAPHIC REGIONS FROM ROMANIA

Mihaela POROJAN
Sef lucr.dr.ing. - Universitatea "Transilvania" din Brasov - Facultatea de Industria Lemnului
Adress: B-dul Eroilor nr.29, 500036 Brasov, Romania
Tel: +40 268 412921/int. 192. Fax: +40 268 415315.
E-mail: mporojan@unitbv.ro

Simona-Nicoleta URDEA
Drd.ing. - Universitatea "Transilvania" din Brasov - Facultatea de Industria Lemnului
Adress: B-dul Eroilor nr.29, 500036 Brasov, Romania
Tel: +40 268 412921/int. 192. Fax: +40 268 415315.

Abstract: The paper presents the experimental results for the contents of water-soluble extractives and ash of black locust wood harvested from two different geographic regions of Romania, respectively North - the Carei region and South - the Arges region. The following average values were obtained: for black locust from the North region the cool water soluble extractives content was 2.362% with 5.5 pH of watery extract, the hot water soluble extractives content was 4.244% with 4.6 pH of watery extract and ash content was 0.417%. Close values, with no significant differences were obtained for the black locust originating from the Southern region, respectively: the cool water soluble extractives content was 2.414% with 6.5 pH of watery extract, the hot water soluble extractives content was 4.469% with 4.5 pH of watery extract and ash content was 0.435%.

Key words: black locust, extractive substances, cool water, hot water, ash.

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*** STAS 6095-90. Materii prime fibroase pentru Industria Celulozei si Hartiei. Pregatirea probelor pentru analiza (Fibrous Raw Material for Cellulose and Paper Industry. Prelevation of Test Samples for Analyses).
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