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פותח על ידי קלירמאש פתרונות בע"מ -
Biosynthesis of plant hormones during anaerobic digestion of instant coffee waste
Year:
1995
Source of publication :
Plant Growth Regulation
Authors :
ותד, עבד
;
.
קוסטנברג, ד'
;
.
Volume :
17
Co-Authors:
Kostenberg, D., Migal-Galilee Technological Center, Kiryat Shmona, 10200, Israel
Marchaim, U., Migal-Galilee Technological Center, Kiryat Shmona, 10200, Israel
Watad, A.A., Department of Horticulture, ARO, The Volcani Center, Bet Dagan, Israel
Epstein, E., Department of Horticulture, ARO, The Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
127
To page:
132
(
Total pages:
6
)
Abstract:
A large amount of solid waste remains after the production of instant coffee. This waste has to be moved to dumps, where it poses a threat of environmental pollution. Treatment of this waste by anaerobic methanogenic thermophilic digestion produced, besides biogas, a digested slurry which was used as a growth medium for horticulture, and proved to be a suitable and economical substitute for peat moss. Biological tests with mung bean cuttings and Grevillea plantlets showed promotional effects on rooting of the slurry and its sieved fraction extract, washed with water (Capul). Green coffee beans, instant coffee waste, its anaerobically-digested slurry and Capul were extracted by various methods and the extracts were analyzed by TLC, HPLC and GC/MS. Examinations showed clearly the presence of IAA and IBA in free and bound forms in all the substrates. The values of free and bound IAA were calculated by use of an internal standard and GC/MS. The amount of conjugated IAA was found to be much higher than that of free IAA, in both the coffee beans and instant coffee waste (11.1 vs 2.7 nmol g-1, respectively). In the digested slurry and Capul, however, most of the IAA was present as the free form and was approximately 23.5-33.0 nmol g-1, which is almost ten times more than in the waste, and almost twice the total amount of IAA in coffee beans. It is postulated that the high levels of free IAA in the digested instant coffee waste are a result of catabolism of tryptophan by anaerobic bacteria. © 1995 Kluwer Academic Publishers.
Note:
Related Files :
anaerobic methanogenic thermophilic digestion
Auxin
biogas
IAA
IBA
עוד תגיות
תוכן קשור
More details
DOI :
10.1007/BF00024172
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
21166
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:42
Scientific Publication
Biosynthesis of plant hormones during anaerobic digestion of instant coffee waste
17
Kostenberg, D., Migal-Galilee Technological Center, Kiryat Shmona, 10200, Israel
Marchaim, U., Migal-Galilee Technological Center, Kiryat Shmona, 10200, Israel
Watad, A.A., Department of Horticulture, ARO, The Volcani Center, Bet Dagan, Israel
Epstein, E., Department of Horticulture, ARO, The Volcani Center, Bet Dagan, Israel
Biosynthesis of plant hormones during anaerobic digestion of instant coffee waste
A large amount of solid waste remains after the production of instant coffee. This waste has to be moved to dumps, where it poses a threat of environmental pollution. Treatment of this waste by anaerobic methanogenic thermophilic digestion produced, besides biogas, a digested slurry which was used as a growth medium for horticulture, and proved to be a suitable and economical substitute for peat moss. Biological tests with mung bean cuttings and Grevillea plantlets showed promotional effects on rooting of the slurry and its sieved fraction extract, washed with water (Capul). Green coffee beans, instant coffee waste, its anaerobically-digested slurry and Capul were extracted by various methods and the extracts were analyzed by TLC, HPLC and GC/MS. Examinations showed clearly the presence of IAA and IBA in free and bound forms in all the substrates. The values of free and bound IAA were calculated by use of an internal standard and GC/MS. The amount of conjugated IAA was found to be much higher than that of free IAA, in both the coffee beans and instant coffee waste (11.1 vs 2.7 nmol g-1, respectively). In the digested slurry and Capul, however, most of the IAA was present as the free form and was approximately 23.5-33.0 nmol g-1, which is almost ten times more than in the waste, and almost twice the total amount of IAA in coffee beans. It is postulated that the high levels of free IAA in the digested instant coffee waste are a result of catabolism of tryptophan by anaerobic bacteria. © 1995 Kluwer Academic Publishers.
Scientific Publication
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