Details
| Original language | English |
|---|---|
| Pages (from-to) | 257-265 |
| Number of pages | 9 |
| Journal | Journal of Applied Botany and Food Quality |
| Volume | 93 |
| Publication status | Published - 6 Dec 2020 |
Abstract
Moringa oleifera is considered to be one of the most valuable and beneficial crop tree species. The great nutritiousness is assigned to its high leaf protein content, and its health-promoting effect to the anti-carcinogenic properties of its genuine glucosinolates and their degradation products. From a plant physiological perception protein contents of 30% seem to be quite high. Accordingly, a reconsideration of these findings became necessary. The related inquiry unveils that also in the leaves of many other plant species such high protein contents are reported, provided that they are quantified by Kjeldahl nitrogen determinations. But, it is rather likely that the nitrogen accounting for the putative high protein contents is due to insoluble cell wall bound hydroxyproline-rich glycoproteins. Due to their extreme insolubility, these compounds cannot be digested easily, and thus, they do not contribute to the nutritiousness of M. oleifera leaves. In contrast to classical glucosinolates, those occurring in M. oleifera are characterized by an attachment of a rhamnose to the aglycone. In consequence, the products generated during the myrosinase-catalysed hydrolysis correspond to non-volatile rhamnosides of isothiocyanates. Since over time, olfactorily active substances emerge, the rhamnose moiety has to be cleaved off, putatively by a corresponding rhamnosidase.
Keywords
- Glucosinolates, Moringa oleifera, Protein contents
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Food Science
- Agricultural and Biological Sciences(all)
- Plant Science
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In: Journal of Applied Botany and Food Quality, Vol. 93, 06.12.2020, p. 257-265.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Protein content and glucosinolates from Moringa oleifera Lam
T2 - New insights into an auspicious commodity
AU - Lewerenz, Laura
AU - Heinrichs, Heinrich
AU - Hornbacher, Johann
AU - Papenbrock, Jutta
AU - Nguyen-Thanh, B
AU - Selmar, Dirk
PY - 2020/12/6
Y1 - 2020/12/6
N2 - Moringa oleifera is considered to be one of the most valuable and beneficial crop tree species. The great nutritiousness is assigned to its high leaf protein content, and its health-promoting effect to the anti-carcinogenic properties of its genuine glucosinolates and their degradation products. From a plant physiological perception protein contents of 30% seem to be quite high. Accordingly, a reconsideration of these findings became necessary. The related inquiry unveils that also in the leaves of many other plant species such high protein contents are reported, provided that they are quantified by Kjeldahl nitrogen determinations. But, it is rather likely that the nitrogen accounting for the putative high protein contents is due to insoluble cell wall bound hydroxyproline-rich glycoproteins. Due to their extreme insolubility, these compounds cannot be digested easily, and thus, they do not contribute to the nutritiousness of M. oleifera leaves. In contrast to classical glucosinolates, those occurring in M. oleifera are characterized by an attachment of a rhamnose to the aglycone. In consequence, the products generated during the myrosinase-catalysed hydrolysis correspond to non-volatile rhamnosides of isothiocyanates. Since over time, olfactorily active substances emerge, the rhamnose moiety has to be cleaved off, putatively by a corresponding rhamnosidase.
AB - Moringa oleifera is considered to be one of the most valuable and beneficial crop tree species. The great nutritiousness is assigned to its high leaf protein content, and its health-promoting effect to the anti-carcinogenic properties of its genuine glucosinolates and their degradation products. From a plant physiological perception protein contents of 30% seem to be quite high. Accordingly, a reconsideration of these findings became necessary. The related inquiry unveils that also in the leaves of many other plant species such high protein contents are reported, provided that they are quantified by Kjeldahl nitrogen determinations. But, it is rather likely that the nitrogen accounting for the putative high protein contents is due to insoluble cell wall bound hydroxyproline-rich glycoproteins. Due to their extreme insolubility, these compounds cannot be digested easily, and thus, they do not contribute to the nutritiousness of M. oleifera leaves. In contrast to classical glucosinolates, those occurring in M. oleifera are characterized by an attachment of a rhamnose to the aglycone. In consequence, the products generated during the myrosinase-catalysed hydrolysis correspond to non-volatile rhamnosides of isothiocyanates. Since over time, olfactorily active substances emerge, the rhamnose moiety has to be cleaved off, putatively by a corresponding rhamnosidase.
KW - Glucosinolates
KW - Moringa oleifera
KW - Protein contents
UR - http://www.scopus.com/inward/record.url?scp=85100378240&partnerID=8YFLogxK
U2 - 10.5073/JABFQ.2020.093.032
DO - 10.5073/JABFQ.2020.093.032
M3 - Article
VL - 93
SP - 257
EP - 265
JO - Journal of Applied Botany and Food Quality
JF - Journal of Applied Botany and Food Quality
SN - 1613-9216
ER -