1
|
Oldoni AA, Bacchi AD, Mendes FR, Tiba PA, Mota-Rolim S. Neuropsychopharmacological Induction of (Lucid) Dreams: A Narrative Review. Brain Sci 2024; 14:426. [PMID: 38790404 PMCID: PMC11119155 DOI: 10.3390/brainsci14050426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/26/2024] Open
Abstract
Lucid dreaming (LD) is a physiological state of consciousness that occurs when dreamers become aware that they are dreaming, and may also control the oneiric content. In the general population, LD is spontaneously rare; thus, there is great interest in its induction. Here, we aim to review the literature on neuropsychopharmacological induction of LD. First, we describe the circadian and homeostatic processes of sleep regulation and the mechanisms that control REM sleep with a focus on neurotransmission systems. We then discuss the neurophysiology and phenomenology of LD to understand the main cortical oscillations and brain areas involved in the emergence of lucidity during REM sleep. Finally, we review possible exogenous substances-including natural plants and artificial drugs-that increase metacognition, REM sleep, and/or dream recall, thus with the potential to induce LD. We found that the main candidates are substances that increase cholinergic and/or dopaminergic transmission, such as galantamine. However, the main limitation of this technique is the complexity of these neurotransmitter systems, which challenges interpreting results in a simple way. We conclude that, despite these promising substances, more research is necessary to find a reliable way to pharmacologically induce LD.
Collapse
Affiliation(s)
- Abel A. Oldoni
- Center for Mathematics, Computing and Cognition, Federal University of ABC, São Bernardo do Campo 09606-045, Brazil; (A.A.O.); (P.A.T.)
| | - André D. Bacchi
- Faculty of Health Sciences, Federal University of Rondonópolis, Rondonópolis 78736-900, Brazil;
| | - Fúlvio R. Mendes
- Center for Natural and Human Sciences, Federal University of ABC, São Bernardo do Campo 09606-045, Brazil;
| | - Paula A. Tiba
- Center for Mathematics, Computing and Cognition, Federal University of ABC, São Bernardo do Campo 09606-045, Brazil; (A.A.O.); (P.A.T.)
| | - Sérgio Mota-Rolim
- Brain Institute, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil
| |
Collapse
|
2
|
Villareal MO, Chaochaiphat T, Makbal R, Gadhi C, Isoda H. Molecular Analysis of the Melanogenesis Inhibitory Effect of Saponins-Rich Fraction of Argania spinosa Leaves Extract. Molecules 2022; 27:6762. [PMID: 36235295 PMCID: PMC9571574 DOI: 10.3390/molecules27196762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/30/2022] [Accepted: 10/06/2022] [Indexed: 11/17/2022] Open
Abstract
Plant saponins are abundant and diverse natural products with a great potential for use in drug-discovery research. Here, we evaluated extracts of saponins-rich fractions of argan leaves and argan oil extraction byproducts (shell, pulp, press cake) for their effect on melanogenesis. Results show that from among the samples tested, only the saponins-rich fraction from leaves (ALS) inhibited melanin production in B16 murine melanoma (B16) cells. The mechanism of the melanogenesis inhibition was elucidated by determining the protein and mRNA expression of melanogenesis-associated enzymes tyrosinase (TYR), tyrosinase-related protein 1 (TRP1), and dopachrome tautomerase (DCT), and microphthalmia-associated transcription factor (MITF), and performing DNA microarray analysis. Results showed that 10 µg/mL ALS significantly inhibited melanogenesis in B16 cells and human epidermal melanocytes by 59% and 48%, respectively, without cytotoxicity. The effect of ALS on melanogenesis can be attributed to the decrease in TYR, TRP1, and MITF expression at the protein and mRNA levels. MITF inhibition naturally led to the downregulation of the expression of Tyr and Trp1 genes. Results of the DNA microarray analysis revealed the effect on melanogenesis-associated cAMP and Wnt signaling pathways' genes. The results of this study suggest that ALS may be used in cosmeceuticals preparations for hyperpigmentation treatment.
Collapse
Affiliation(s)
- Myra O. Villareal
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba City 305-8572, Ibaraki, Japan
- Alliance for Research on the Mediterranean and North Africa (ARENA), University of Tsukuba, Tennodai 1-1-1, Tsukuba City 305-8572, Ibaraki, Japan
| | - Thanyanan Chaochaiphat
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba City 305-8572, Ibaraki, Japan
| | - Rachida Makbal
- Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco
| | - Chemseddoha Gadhi
- Alliance for Research on the Mediterranean and North Africa (ARENA), University of Tsukuba, Tennodai 1-1-1, Tsukuba City 305-8572, Ibaraki, Japan
- Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco
- Agrobiotechnology and Bioengineering Center, CNRST-labeled Research Unit (AgroBiotech-URL-CNRST-05 Center), Cadi Ayyad University, Marrakesh 40000, Morocco
| | - Hiroko Isoda
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba City 305-8572, Ibaraki, Japan
- Alliance for Research on the Mediterranean and North Africa (ARENA), University of Tsukuba, Tennodai 1-1-1, Tsukuba City 305-8572, Ibaraki, Japan
| |
Collapse
|
3
|
Novel Oleanane-Type Triterpene Glycosides from the Saponaria officinalis L. Seeds and Apoptosis-Inducing Activity via Mitochondria. Int J Mol Sci 2022; 23:ijms23042047. [PMID: 35216169 PMCID: PMC8877789 DOI: 10.3390/ijms23042047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/05/2022] [Accepted: 02/08/2022] [Indexed: 02/06/2023] Open
Abstract
Saponaria officinalis L., commonly known as “Soapwort”, is a rich source of triterpene glycosides; however, the chemical constituents of S. officinalis seeds have not been fully identified. In this study, we conducted a systematic phytochemical investigation of the seeds of S. officinalis and obtained 17 oleanane-type triterpene glycosides (1–17), including seven new glycosides (1–7). The structures of 1–7 were determined based on a detailed analysis of NMR spectroscopic data and chromatographic and spectroscopic analyses following specific chemical transformation. The cytotoxicities of the isolated compounds were evaluated against HL-60 human promyelocytic leukemia cells, A549 human adenocarcinoma lung cancer cells, and SBC-3 human small-cell lung cancer cells. The cytotoxicities of 1, 4, and 10 toward HL-60 cells and SBC-3 cells were nearly as potent as that of cisplatin. Compound 1, a bisdesmosidic triterpene glycoside obtained in good yield, arrested the cell cycle of SBC-3 cells at the G2/M phase, and induced apoptosis through an intrinsic pathway, accompanied by ROS generation. As a result of the mitochondrial dysfunction induced by 1, mitochondria selective autophagy, termed mitophagy, occurred in SBC-3 cells.
Collapse
|
4
|
Bechkri S, Alabdul Magid A, Sayagh C, Berrehal D, Harakat D, Voutquenne-Nazabadioko L, Kabouche Z, Kabouche A. Triterpene saponins from Silene gallica collected in North-Eastern Algeria. PHYTOCHEMISTRY 2020; 172:112274. [PMID: 31981958 DOI: 10.1016/j.phytochem.2020.112274] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 01/07/2020] [Accepted: 01/13/2020] [Indexed: 06/10/2023]
Abstract
Eleven previously undescribed triterpene saponins, named silenegallisaponin A-K (1-11), were isolated from the aerial parts of Silene gallica L. Their structures were elucidated by analysis of 1D and 2D-NMR spectroscopic data and mass spectrometry (HR-ESI-MS). The saponins comprised caulophyllogenin, echinocystic acid, or quillaic acid substituted at C-3 by a β-d-glucuronic acid or β-d-galactopyranosyl-(1 → 3)-β-d-glucuronopyranoside and at C-28 by a β-d-fucopyranose substituted at C-2 by a β-d-glucose and at C-3 by a β-d-glucose or a β-d-quinovose.
Collapse
Affiliation(s)
- Sara Bechkri
- Université des frères Mentouri-Constantine 1, Département de chimie, Laboratoire d'Obtention des Substances Thérapeutiques (LOST), Campus Chaabet-Ersas, 25000, Constantine, Algeria; Université de Reims Champagne Ardenne, CNRS, ICMR UMR 7312, 51097, Reims, France
| | | | - Charlotte Sayagh
- Université de Reims Champagne Ardenne, CNRS, ICMR UMR 7312, 51097, Reims, France
| | - Djemaa Berrehal
- Université des frères Mentouri-Constantine 1, Département de chimie, Laboratoire d'Obtention des Substances Thérapeutiques (LOST), Campus Chaabet-Ersas, 25000, Constantine, Algeria
| | - Dominique Harakat
- Université de Reims Champagne Ardenne, CNRS, ICMR UMR 7312, 51097, Reims, France
| | | | - Zahia Kabouche
- Université des frères Mentouri-Constantine 1, Département de chimie, Laboratoire d'Obtention des Substances Thérapeutiques (LOST), Campus Chaabet-Ersas, 25000, Constantine, Algeria
| | - Ahmed Kabouche
- Université des frères Mentouri-Constantine 1, Département de chimie, Laboratoire d'Obtention des Substances Thérapeutiques (LOST), Campus Chaabet-Ersas, 25000, Constantine, Algeria.
| |
Collapse
|
5
|
Combination of phenolic profiles, pharmacological properties and in silico studies to provide new insights on Silene salsuginea from Turkey. Comput Biol Chem 2018; 77:178-186. [DOI: 10.1016/j.compbiolchem.2018.10.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 10/05/2018] [Accepted: 10/05/2018] [Indexed: 01/17/2023]
|
6
|
Stereocontrolled synthesis of oleanolic saponin ladyginoside A isolated from Ladyginia bucharica. Carbohydr Res 2018; 458-459:35-43. [DOI: 10.1016/j.carres.2018.01.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 01/09/2018] [Accepted: 01/31/2018] [Indexed: 11/21/2022]
|
7
|
Takahashi N, Li W, Koike K. Oleanane-type triterpenoid saponins from Silene armeria. PHYTOCHEMISTRY 2016; 129:77-85. [PMID: 27460531 DOI: 10.1016/j.phytochem.2016.07.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 07/15/2016] [Accepted: 07/18/2016] [Indexed: 06/06/2023]
Abstract
Twelve triterpenoid saponins, including seven compounds (i.e., armerosides A-G) hitherto unknown, were isolated from whole plants of Silene armeria. Their structures were established based on extensive spectroscopic analyses and chemical methods. From a biosynthetic perspective, C-23 oxidation of the sapogenin appears to be a key factor in the glycosylation pathway.
Collapse
Affiliation(s)
- Nobuyuki Takahashi
- Faculty of Pharmaceutical Sciences, Toho University, Miyama 2-2-1, Funabashi, Chiba 274-8510, Japan
| | - Wei Li
- Faculty of Pharmaceutical Sciences, Toho University, Miyama 2-2-1, Funabashi, Chiba 274-8510, Japan.
| | - Kazuo Koike
- Faculty of Pharmaceutical Sciences, Toho University, Miyama 2-2-1, Funabashi, Chiba 274-8510, Japan
| |
Collapse
|
8
|
Diversity of Secondary Metabolites in the Genus Silene L. (Caryophyllaceae)—Structures, Distribution, and Biological Properties. DIVERSITY-BASEL 2014. [DOI: 10.3390/d6030415] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The genus Silene (family Caryophyllaceae) comprises more than 700 species, which are widely distributed in temperate zones of the Northern Hemisphere, but are also present in Africa and have been introduced in other continents. Silene produces a high diversity of secondary metabolites and many of them show interesting biological and pharmacological activities. More than 450 compounds have been isolated; important classes include phytoecdysteroids (which mimic insect molting hormones), triterpene saponins (with detergent properties), volatiles, other terpenoids and phenolics. This review focusses on the phytochemical diversity, distribution of Silene secondary metabolites and their biological activities.
Collapse
|
9
|
Emirdağ-Öztürk S, Karayıldırım T, Çapcı-Karagöz A, Alankuş-Çalışkan Ö, Özmen A, Poyrazoğlu-Çoban E. Synthesis, antimicrobial and cytotoxic activities, and structure-activity relationships of gypsogenin derivatives against human cancer cells. Eur J Med Chem 2014; 82:565-73. [PMID: 24941130 DOI: 10.1016/j.ejmech.2014.05.084] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 05/15/2014] [Accepted: 05/31/2014] [Indexed: 11/27/2022]
Abstract
A series of gypsogenin (1) derivatives (1a-i) was synthesized in good yields, and the derivatives' structures were established using UV, IR, (1)H NMR, (13)C NMR, and LCMS spectroscopic data. Among the tested compounds, 1a, 1b, 1d, 1e, and gypsogenin (1) showed antimicrobial activities against Bacillus subtilis and Bacillus thrungiensis, with inhibition zones of 10-14 mm. In addition, compounds 1b, 1d, and 1e showed antimicrobial activities against Bacillus cereus, with inhibition zones of 9-14 mm. Using six human cancer cell lines in vitro, the cytotoxic activities of all tested compounds were determined by calculating the IC50 values. Doxorubicin and paclitaxel were used as controls. Among the tested compounds, 1a, 1c, and 1d had inhibitory effects with IC50 values of 3.9 μM (HL-60 cells), 5.15 μM (MCF-7 cells), and 5.978 μM (HL-60), respectively. To determine the type of cell death, Hoechst 33258 (HO) and propidium iodide (PI) double staining was used. Especially, gypsogenin (1) and compound 1a triggered the apoptotic mechanism at a concentration of 20 μM. Thus, gypsogenin (1) and compounds 1a, 1c, and 1d possess varying degrees of biological activities and can be considered as potential antitumor agents.
Collapse
Affiliation(s)
- Safiye Emirdağ-Öztürk
- Chemistry Department, Faculty of Science, Ege University, Bornova, Izmir 35100, Turkey.
| | - Tamer Karayıldırım
- Chemistry Department, Faculty of Science, Ege University, Bornova, Izmir 35100, Turkey
| | - Aysun Çapcı-Karagöz
- Institute of Organic Chemistry I, University of Erlangen-Nuremberg, Henkestrasse 42, 91054 Erlangen, Germany
| | | | - Ali Özmen
- Biology Department, Adnan Menderes University, Aydin 09010, Turkey
| | | |
Collapse
|
10
|
Minareci E, Yildiz K, Çirpici A. Karyological Studies in Some Species of the Genus Silene (Caryophyllaceae). CYTOLOGIA 2009. [DOI: 10.1508/cytologia.74.245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Ersin Minareci
- Department of Biology, Faculty of Science and Letters, Celal Bayar University
| | - Kemal Yildiz
- Department of Biology, Faculty of Science and Letters, Celal Bayar University
| | - Ali Çirpici
- Department of Biology, Faculty of Science and Letters, Marmara University
| |
Collapse
|
11
|
Kuljanabhagavad T, Thongphasuk P, Chamulitrat W, Wink M. Triterpene saponins from Chenopodium quinoa Willd. PHYTOCHEMISTRY 2008; 69:1919-26. [PMID: 18452959 DOI: 10.1016/j.phytochem.2008.03.001] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2007] [Revised: 02/26/2008] [Accepted: 03/04/2008] [Indexed: 05/10/2023]
Abstract
Twenty triterpene saponins (1-20) have been isolated from different parts of Chenopodium quinoa (flowers, fruits, seed coats, and seeds) and their structures have been elucidated by analysis of chemical and spectroscopic data including 1D- and 2D-NMR. Four compounds (1-4) were identified: 3beta-[(O-beta-d-glucopyranosyl-(1-->3)-alpha-l-arabinopyranosyl)oxy]-23-oxo-olean-12-en-28-oic acid beta-d-glucopyranoside (1), 3beta-[(O-beta-d-glucopyranosyl-(1-->3)-alpha-l-arabinopyranosyl)oxy]-27-oxo-olean-12-en-28-oic acid beta-d-glucopyranoside (2), 3-O-alpha-l-arabinopyranosyl serjanic acid 28-O-beta-d-glucopyranosyl ester (3), and 3-O-beta-d-glucuronopyranosyl serjanic acid 28-O-beta-d-glucopyranosyl ester (4). The following known compounds have not previously been reported as saponin constituents from the flowers and the fruits of this plant: two bidesmosides of serjanic acid (5,6), four bidesmosides of oleanolic acid (7-10), five bidesmosides of phytolaccagenic acid (11-15), four bidesmosides of hederagenin (16-19), and one bidesmoside of 3beta,23,30-trihydroxy olean-12-en-28-oic acid (20). The cytotoxicity of these saponins and their aglycones was tested in HeLa cells. Induction of apoptosis in Caco-2 cells by bidesmosidic saponins 1-4 and their aglycones I-III was determined by flow cytometric DNA analysis. The saponins with an aldehyde group were most active. The relationships between structure and cytotoxic activity of saponins and their aglycones are discussed.
Collapse
Affiliation(s)
- Tiwatt Kuljanabhagavad
- Chemistry Program, Faculty of Science and Technology, Suan Dusit Rajabhat University, Bangkok 10300, Thailand
| | | | | | | |
Collapse
|
12
|
Vincken JP, Heng L, de Groot A, Gruppen H. Saponins, classification and occurrence in the plant kingdom. PHYTOCHEMISTRY 2007; 68:275-97. [PMID: 17141815 DOI: 10.1016/j.phytochem.2006.10.008] [Citation(s) in RCA: 389] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2005] [Revised: 09/23/2006] [Accepted: 10/10/2006] [Indexed: 05/12/2023]
Abstract
Saponins are a structurally diverse class of compounds occurring in many plant species, which are characterized by a skeleton derived of the 30-carbon precursor oxidosqualene to which glycosyl residues are attached. Traditionally, they are subdivided into triterpenoid and steroid glycosides, or into triterpenoid, spirostanol, and furostanol saponins. In this study, the structures of saponins are reviewed and classified based on their carbon skeletons, the formation of which follows the main pathways for the biosynthesis of triterpenes and steroids. In this way, 11 main classes of saponins were distinguished: dammaranes, tirucallanes, lupanes, hopanes, oleananes, taraxasteranes, ursanes, cycloartanes, lanostanes, cucurbitanes, and steroids. The dammaranes, lupanes, hopanes, oleananes, ursanes, and steroids are further divided into 16 subclasses, because their carbon skeletons are subjected to fragmentation, homologation, and degradation reactions. With this systematic classification, the relationship between the type of skeleton and the plant origin was investigated. Up to five main classes of skeletons could exist within one plant order, but the distribution of skeletons in the plant kingdom did not seem to be order- or subclass-specific. The oleanane skeleton was the most common skeleton and is present in most orders of the plant kingdom. For oleanane type saponins, the kind of substituents (e.g. -OH, =O, monosaccharide residues, etc.) and their position of attachment to the skeleton were reviewed. Carbohydrate chains of 18 monosaccharide residues can be attached to the oleanane skeleton, most commonly at the C3 and/or C17 atom. The kind and positions of the substituents did not seem to be plant order-specific.
Collapse
Affiliation(s)
- Jean-Paul Vincken
- Laboratory of Food Chemistry, Wageningen University, P.O. Box 8129, 6700 EV Wageningen, The Netherlands.
| | | | | | | |
Collapse
|
13
|
Balsevich JJ, Bishop GG, Ramirez-Erosa I. Analysis of bisdesmosidic saponins in Saponaria vaccaria L. by HPLC-PAD-MS: identification of new quillaic acid and gypsogenin 3-O-trisaccharides. PHYTOCHEMICAL ANALYSIS : PCA 2006; 17:414-23. [PMID: 17144250 DOI: 10.1002/pca.943] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
A high-performance liquid chromatographic method using photodiode array and single quadrupole electrospray mass detection for analysis and profiling of bisdesmosidic saponins in Saponaria vaccaria seed was developed. Profiles of seed extract from three different plant sources were obtained and found to contain the same saponins, albeit in different proportions. Several known saponins were identified by selected ion extraction of quasi-molecular ions from the total ion chromatogram and confirmed by their mass spectra. Application of high cone voltages afforded mass spectra containing key diagnostic fragments and relatively strong singly charged quasi-molecular ions. In addition to previously identified saponins, several new quillaic acid and gypsogenin bisdesmosides could be detected via mass spectral analysis. Five of these were tentatively identified as pentose homologues of known saponins, having an added xylosyl residue linked to the 3-O-glucuronyl group (1 --> 3). The stereochemistry and identity of the xylosyl linkage in the new saponins was determined by chemical means. Previously reported vaccaric or segetalic acid-type bisdesmosides could not be detected in any of the extracts.
Collapse
Affiliation(s)
- J John Balsevich
- Plant Biotechnology Institute, National Research Council of Canada, 110 Gymnasium Place, Saskatoon, Saskatchewan, Canada S7N OW9.
| | | | | |
Collapse
|
14
|
|
15
|
Sparg SG, Light ME, van Staden J. Biological activities and distribution of plant saponins. JOURNAL OF ETHNOPHARMACOLOGY 2004; 94:219-43. [PMID: 15325725 DOI: 10.1016/j.jep.2004.05.016] [Citation(s) in RCA: 703] [Impact Index Per Article: 35.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2004] [Revised: 05/28/2004] [Accepted: 05/29/2004] [Indexed: 05/24/2023]
Abstract
Plant saponins are widely distributed amongst plants and have a wide range of biological properties. The more recent investigations and findings into their biological activities were summarized. Isolation studies of saponins were examined to determine which are the more commonly studied plant families and in which families saponins have been identified.
Collapse
Affiliation(s)
- S G Sparg
- Research Centre for Plant Growth and Development, University of KwaZulu-Natal, Pietermaritzburg, Private Bag X01, Scottsville 3209, South Africa
| | | | | |
Collapse
|