1.Therapeutic effect of Ziziphi Spinosae Semen extracts on chronic unpredictable mild stress-induced depression and insomnia-like behavior in mice.
Hong-Bo CHENG ; Xian LIU ; Hui-Ying SHANG ; Rong GAO ; Wan-Yun DANG ; Ye-Hui GAO ; Cheng-Rong XIAO ; Yue GAO ; Zeng-Chun MA
China Journal of Chinese Materia Medica 2025;50(7):1817-1829
This paper aims to study the effect of Ziziphi Spinosae Semen extracts on chronic unpredictable mild stress(CUMS)-induced depression-like and insomnia behavior models of mice. The CUMS-induced depression-like and insomnia behavior model of mice was established by CUMS treatment for three weeks. The mice were randomly divided into control group, model group, positive drug diazepam group(2 mg·kg~(-1)), as well as low-dose group(1.95 g·kg~(-1)), medium-dose group(3.9 g·kg~(-1)), and high-dose group(7.8 g·kg~(-1)) of Ziziphi Spinosae Semen extracts, with 18 mice in each group. On the 15th day of modeling, the drug was administered intragastrically once a day for one week. Then, the pentobarbital sodium cooperative righting experiment, open field experiment, and elevated plus maze experiment were carried out, respectively. The contents of neurotransmitters 5-hydroxytryptamine(5-HT) and 5-hydroxyindoleacetic acid(5-HIAA) in serum and thalamus of mice, as well as the levels of corticotropin releasing hormone(CRH), adrenocorticotropic hormone(ACTH), and corticosterone(CORT) in serum, were determined by enzyme-linked immunosorbent assay(ELISA). The neuron damage in the hippocampus of mice was observed by hematoxylin-eosin(HE) staining and Nissl staining. Western blot was used to detect the expressions of tryptophan hydroxylase 2(TPH2), serotonin transporter(SERT), monoamine oxidase A(MAOA), five prime repressors under dual repression binding protein 1(Freud1), synaptic plasticity-related proteins [cellular gene FOS(C-FOS), postsynaptic density protein 95(PSD95), synapsin 1(SYN1), and activity-regulated cytoskeleton-associated gene(ARC)], blood-brain barrier(BBB) permeability-related proteins [zonula occludens 1(ZO-1), occludin, and claudin 1], inflammatory factors [NOD-, LRR-and pyrin domain-containing protein 3(NLRP3), apoptosis-associated speck-like protein(ASC), gasdermin D(GSDMD), caspase-3, and caspase-8], and antioxidant factors [nuclear factor erythroid 2-related factor 2(NRF2) and heme oxygenase 1(HO1)] in thalamic tissue of mice. The results indicated that compared with that in the model group, the sleep latency was significantly shortened, and the sleep duration was significantly prolonged in each dose group of Ziziphi Spinosae Semen extracts. The number of visits to the central area of the open field and the distance and time of visits were significantly increased in each dose group of Ziziphi Spinosae Semen extracts. In addition, the proportion of distance and time of entering the open arm area of the elevated plus maze was significantly increased in each dose group of Ziziphi Spinosae Semen extracts. The contents of 5-HT and 5-HIAA in serum and thalamus of mice increased to varying degrees in each dose group of Ziziphi Spinosae Semen extracts; the contents of CRH, ACTH, and CORT in serum of mice were significantly decreased. The protein expression of TPH2 was significantly increased. The protein expression of MAOA, SERT, and Freud1 was significantly decreased. Ziziphi Spinosae Semen extracts could also significantly reduce the protein expression of C-FOS but significantly increase the protein expression of PSD95, ARC, and SYN1. They could reduce the pathological damage of the hippocampus in mice and significantly increase the protein expression of ZO-1, occluding, and claudin 1. The protein expression of NLRP3, GSDMD, ASC, caspase-3, and caspase-8 in the thalamic tissue of mice was significantly decreased, and the protein expression of HO1 and NRF2 was significantly increased. In conclusion, Ziziphi Spinosae Semen extracts could effectively improve sleep disorders and depression-like behaviors in CUMS-induced model mice, which may be related to regulating the 5-HT anabolism process and hypothalamic-pituitary-adrenal(HPA) axis-related hormone levels, reducing pathological damage in the hippocampus, improving synaptic plasticity, repairing BBB integrity, and alleviating inflammatory response and oxidative stress damage.
Animals
;
Ziziphus/chemistry*
;
Mice
;
Male
;
Depression/psychology*
;
Drugs, Chinese Herbal/administration & dosage*
;
Sleep Initiation and Maintenance Disorders/psychology*
;
Stress, Psychological/complications*
;
Behavior, Animal/drug effects*
;
Humans
;
Disease Models, Animal
2.Antidepressant effects of Ziziphi Spinosae Semen extract on depressive-like behaviors in sleep deprivation rats based on integrated serum metabolomics and gut microbiota.
Liang-Lei SONG ; Ya-Yu SUN ; Ze-Jia NIU ; Jia-Ying LIU ; Xiang-Ping PEI ; Yan YAN ; Chen-Hui DU
China Journal of Chinese Materia Medica 2025;50(16):4510-4524
Based on serum metabolomics and gut microbiota technology, this study explores the effects and mechanisms of the water extract of Ziziphi Spinosae Semen(SZRW) and the petroleum ether extract of Ziziphi Spinosae Semen(SZRO) in improving depressive-like behaviors induced by sleep deprivation. A modified multi-platform water environment method was employed to establish a rat model of sleep deprivation. Depressive-like behaviors in rats were assessed through the sucrose preference test and forced swim test. The expression of barrier proteins, such as Occludin, in the colon was determined by immunofluorescence. UPLC-Q-Orbitrap MS was utilized to analyze the serum metabolic profiles of sleep-deprived rats, screen for differential metabolites, and analyze metabolic pathways. The diversity of the gut microbiota was detected using 16S rRNA gene sequencing. Spearman correlation coefficient analysis was conducted to assess the correlation between differential metabolites and gut microbiota. The results indicated that SZRO significantly increased the sucrose preference index and decreased the immobility time in the forced swim test in rats. A total of 34 differential metabolites were identified through serum metabolomics. SZRW and SZRO shared five metabolic pathways, including phenylalanine metabolism. SZRW uniquely featured taurine and hypotaurine metabolism, while SZRO uniquely featured linoleic acid metabolism and tyrosine metabolism. Correlation analysis revealed that SZRW could upregulate the abundance of Bilophila, promoting the production of indole-3-propionic acid and subsequently upregulating the expression levels of intestinal tight junction proteins such as ZO-1, Occludin, and Claudin-1. SZRO could indirectly influence metabolic pathways such as arginine metabolism and linoleic acid metabolism by upregulating the abundance of gut microbiota such as Coprococcus and Eubacterium species. Both SZRW and SZRO can regulate endogenous metabolism, including amino acids, energy, and lipids, alter the gut microbiota microecology, and improve depressive-like behaviors. SZRO demonstrated superior effects in regulating metabolic pathways and gut microbiota structure compared to SZRW. The findings of this study provide a scientific basis for elucidating the pharmacodynamic material basis of Ziziphi Spinosae Semen.
Animals
;
Rats
;
Gastrointestinal Microbiome/drug effects*
;
Male
;
Metabolomics
;
Drugs, Chinese Herbal/administration & dosage*
;
Depression/blood*
;
Rats, Sprague-Dawley
;
Sleep Deprivation/complications*
;
Ziziphus/chemistry*
;
Antidepressive Agents/administration & dosage*
;
Behavior, Animal/drug effects*
;
Humans
3.Mechanism of inhibiting miR-34a-5p expression and promoting bone growth in mouse brain tissue by Semen Ziziphi Spinosae extract.
Yuan-Yuan PEI ; Yan XIE ; Na YIN ; Wen-Long MA ; Wei-Peng XING ; Gui-Zhi WANG ; Qing-Feng WANG
China Journal of Orthopaedics and Traumatology 2025;38(10):1061-1070
OBJECTIVE:
To explore the mechanism by which the extract of Semen Ziziphi Spinosae extract promotes bone growth in mice by modulation of the expression of miR-34a-5p in brain tissue.
METHODS:
Mice were assigned to four experimental groups:a normal control group, a drug administration group (receiving 0.320 mg·g-1 body weight of Semen Ziziphi Spinosae extract via intragastric administration), a positive control group (receiving 0.013 mg·g-1 body weight of jujube seed saponin via intragastric administration), and a combination group administration with Semen Ziziphi Spinosae extract plus a 5-hydroxytryptamine 2A receptor (5-HT2AR) agonist (intragastric administration of Semen Ziziphi Spinosae extract combined with intracerebroventricular injection of 8 μg P-MPPF per mice for the final three days of the experiment). Following a 20-day administration period, the effects of the interventions on bone growth, serum growth hormone (GH) levels, and 5-HT2AR expression in brain tissue were evaluated. MicroRNAs (miRNAs) that were differentially expressed in the brain tissues of mice exhibiting bone growth induced by Semen Ziziphi Spinosae extract, as compared to those in normal mice, were identified using a gene chip approach. The interaction between miR-34a-5p and 5-HT2AR was subsequently validated through quantitative reverse transcription polymerase chainreaction (RT-qPCR) and dual-luciferase reporter gene assays. Subsequently, by utilizing the miR-34a-5p inhibitor group and mimics group, along with the normal control group, the drug administration group, the positive control group, and the drug administration combined with miR-34a-5p inhibitor group, the variations in 5-HT2AR expression in mouse brain tissue across all groups were examined, and the binding activity of 5-hydroxytryptamine (5-HT) to the 5-hydroxytryptamine 1A receptor (5-HT1AR) in mice was assessed.
RESULTS:
The body lengths of the normal control group and the drug administration group were(8.9±0.3) and(10.4±0.4) cm;femur lengths were (8.5±0.3) and (9.1±0.5) mm;tibia lengths were (10.7±0.3) and (11.2±0.4) mm, respectively. The contents of GH levels were (58.6±8.2) and (72.9±6.1) ng·ml-1;and the contents of 5-HT2AR were (32.0±5.0) and (21.9± 5.5) ng·ml-1, respectively. Compared with the normal control group, the drug administration group promoted the growth of body length, femur, and tibia in mice, and increased GH secretion, showing statistically significant differences (P<0.05). Additionally, it significantly reduced the content of 5-HT2AR in brain tissue, with statistical significance (P<0.01). The gene chip analysis identified a total of 16 differentially expressed miRNAs, of which 13 were up-regulated and 3 were down-regulated. Bioinformatics analysis predicted that the up-regulated miR-34a-5p could regulate the expression of 5-HT2AR, a prediction that was confirmed through a dual-luciferase reporter gene assay, demonstrating a direct regulatory interaction between the two. Furthermore, in vivo experiments in mice revealed that overexpression and silencing of miR-34a-5p resulted in corresponding changes in the expression levels of 5-HT2AR in brain tissues/cells, as well as in the binding activity between 5-HT and 5-HT1AR.
CONCLUSION
The Semen Ziziphi Spinosae extract promotes animal bone growth by enhancing miR-34a-5p expression in brain tissue, downregulating the expression level of 5-HT2AR, improving the binding activity between 5-HT and 5-HT1AR, and extending slow-wave sleep duration, thereby stimulating GH secretion.
Animals
;
MicroRNAs/metabolism*
;
Mice
;
Male
;
Brain/metabolism*
;
Ziziphus/chemistry*
;
Bone Development/drug effects*
;
Drugs, Chinese Herbal/pharmacology*
;
Plant Extracts/pharmacology*
4.Advances in pharmacological effects of jujuboside B.
Xiao-Na DONG ; Meng-Ting LI ; Hui-Yang GU ; Ye ZHU ; Xiang GU
China Journal of Chinese Materia Medica 2023;48(16):4295-4301
Ziziphi Spinosae Semen(ZSS) is an edible TCM derived from the dried ripe seeds of Ziziphus jujube Mill. var. spinosa(Bunge)Hu ex H. F. Chou(Rhamnaceae), which has the effects of nourishing the heart, tonifying the liver, calming the heart, tranquilizing the mind, arresting sweating, and promoting fluid production, and is widely used in the treatment and health care of diseases related to cardiovascular, nervous, and immune systems. Jujuboside B(JuB), one of the main active ingredients of ZSS, possesses various pharmacological effects with application values. This paper reviewed the chemical structure and pharmacological effects of JuB. JuB has sedative, hypnotic, antitumor, anti-platelet, anti-inflammatory, and other biological activities, which shows the potential thera-peutic effects on insomnia, tumors, coronary artery disease, airway inflammation, and liver injury. However, there are some limitations to the results of current studies. More comprehensive studies, including basic research and clinical trials, need to be carried out to provide more reliable evidence.
Humans
;
Drugs, Chinese Herbal/pharmacology*
;
Saponins/pharmacology*
;
Hypnotics and Sedatives
;
Sleep Initiation and Maintenance Disorders
;
Ziziphus/chemistry*
5.Optimization of ethanol reflux extraction process of Ziziphi Spinosae Semen- Schisandrae Sphenantherae Fructus based on network pharmacology combined with response surface methodology.
Mian HUANG ; Yu-Meng SONG ; Xi-Yue WANG ; Bing-Tao ZHAI ; Jiang-Xue CHENG ; Xiao-Fei ZHANG ; Dong-Yan GUO
China Journal of Chinese Materia Medica 2023;48(4):966-977
The present study optimized the ethanol extraction process of Ziziphi Spinosae Semen-Schisandrae Sphenantherae Fructus drug pair by network pharmacology and Box-Behnken method. Network pharmacology and molecular docking were used to screen out and verify the potential active components of Ziziphi Spinosae Semen-Schisandrae Sphenantherae Fructus, and the process evaluation indexes were determined in light of the components of the content determination under Ziziphi Spinosae Semen and Schisandrae Sphenantherae Fructus in the Chinese Pharmacopoeia(2020 edition). The analytic hierarchy process(AHP) was used to determine the weight coefficient of each component, and the comprehensive score was calculated as the process evaluation index. The ethanol extraction process of Ziziphi Spinosae Semen-Schisandrae Sphenantherae Fructus was optimized by the Box-Behnken method. The core components of the Ziziphi Spinosae Semen-Schisandrae Sphenantherae Fructus drug pair were screened out as spinosin, jujuboside A, jujuboside B, schisandrin, schisandrol, schisandrin A, and schisandrin B. The optimal extraction conditions obtained by using the Box-Behnken method were listed below: extraction time of 90 min, ethanol volume fraction of 85%, and two times of extraction. Through network pharmacology and molecular docking, the process evaluation indexes were determined, and the optimized process was stable, which could provide an experimental basis for the production of preparations containing Ziziphi Spinosae Semen-Schisandrae Sphenantherae Fructus.
Ethanol
;
Molecular Docking Simulation
;
Network Pharmacology
;
Seeds/chemistry*
;
Ziziphus/chemistry*
;
Plant Extracts/chemistry*
;
Schisandra/chemistry*
;
Fruit/chemistry*
;
Technology, Pharmaceutical
6.Effective substance and mechanism of Ziziphi Spinosae Semen extract in treatment of insomnia based on serum metabolomics and network pharmacology.
Zhen-Hua BIAN ; Wen-Ming ZHANG ; Jing-Yue TANG ; Qian-Qian FEI ; Min-Min HU ; Xiao-Wei CHEN ; Lian-Lin SU ; Cheng-Hao FEI ; De JI ; Chun-Qin MAO ; Huang-Jin TONG ; Tu-Lin LU ; Xiao-Hang YUAN
China Journal of Chinese Materia Medica 2022;47(1):188-202
This study aims to study the effective substance and mechanism of Ziziphi Spinosae Semen extract in the treatment of insomnia based on serum metabolomics and network pharmacology. The rat insomnia model induced by p-chlorophenylalanine(PCPA) was established. After oral administration of Ziziphi Spinosae Semen extract, the general morphological observation, pentobarbital sodium-induced sleep test, and histopathological evaluation were carried out. The potential biomarkers of the extract in the treatment of insomnia were screened by ultra-high performance liquid chromatography-mass spectrometry(UHPLC-MS) combined with multivariate analysis, and the related metabolic pathways were further analyzed. The "component-target-pathway" network was constructed by ultra-high performance liquid chromatography coupled with quadrupole-Exactive mass spectrometry(UHPLC-Q-Exactive-MS/MS) combined with network pharmacology to explore the effective substances and mechanism of Ziziphi Spinosae Semen in the treatment of insomnia. The results of pentobarbital sodium-induced sleep test and histopathological evaluation(hematoxylin and eosin staining) showed that Ziziphi Spinosae Semen extract had good theraputic effect on insomnia. A total of 21 endogenous biomarkers of Ziziphi Spinosae Semen extract in the treatment of insomnia were screened out by serum metabolomics, and the metabolic pathways of phenylalanine, tyrosine and tryptophan biosynthesis, phenylalanine metabolism, and nicotinate and nicotinamide metabolism were obtained. A total of 34 chemical constituents were identified by UHPLC-Q-Exactive-MS/MS, including 24 flavonoids, 2 triterpenoid saponins, 4 alkaloids, 2 triterpenoid acids, and 2 fatty acids. The network pharmacological analysis showed that Ziziphi Spinosae Semen mainly acted on target proteins such as dopamine D2 receptor(DRD2), 5-hydroxytryptamine receptor 1 A(HTR1 A), and alpha-2 A adrenergic receptor(ADRA2 A) in the treatment of insomnia. It was closely related to neuroactive ligand-receptor interaction, serotonergic synapse, and calcium signaling pathway. Magnoflorine, N-nornuciferine, caaverine, oleic acid, palmitic acid, coclaurine, betulinic acid, and ceanothic acid in Ziziphi Spinosae Semen may be potential effective compounds in the treatment of insomnia. This study revealed that Ziziphi Spinosae Semen extract treated insomnia through multiple metabolic pathways and the overall correction of metabolic disorder profile in a multi-component, multi-target, and multi-channel manner. Briefly, this study lays a foundation for further research on the mechanism of Ziziphi Spinosae Semen in treating insomnia and provides support for the development of innovative Chinese drugs for the treatment of insomnia.
Animals
;
Chromatography, High Pressure Liquid
;
Drugs, Chinese Herbal/chemistry*
;
Metabolomics
;
Network Pharmacology
;
Rats
;
Seeds/chemistry*
;
Sleep Initiation and Maintenance Disorders/drug therapy*
;
Tandem Mass Spectrometry
;
Ziziphus/chemistry*
7.Antitumor Effects of Ethanol Extract from Ventilago leiocarpa Benth on Sarcoma 180 Tumor-Bearing Mice and Possible Immune Mechanism.
Dao-Hai CHENG ; Ying LIU ; Li WANG
Chinese journal of integrative medicine 2021;27(12):905-911
OBJECTIVE:
To explore the antitumor effects of ethanol extract from Ventilago leiocarpa Benth (EEVLB) on sarcoma 180 (S180) tumor-bearing mice and the potential mechanism.
METHODS:
Sixty mice were randomly assigned to 6 groups according to a random number table: normal group, model group, 5-fluorouracil (5-FU) group (0.02 g·kg
RESULTS:
EEVLB with different concentrations achieved inhibition of tumor growth in vivo, wherein the high-dose group showed the most significant reduction in tumor weight and increased apoptosis of tumor cells (P<0.05). In addition, both net weight gain and spleen index of mice showed uptrend in EEVLB treatment groups (P<0.05). Besides, serum levels of IL-2 and IL-6, percentages of CD3
CONCLUSIONS
EEVLB exhibits promising antitumor activity in vivo. This effect might be due to activation of apoptotic signaling pathway, increase of cytokine levels and enhancement of immune function in tumor-bearing mice.
Animals
;
Cell Line, Tumor
;
Ethanol
;
Mice
;
Plant Extracts/therapeutic use*
;
Rhamnaceae
;
Sarcoma 180/drug therapy*
8.Study on mechanism of enhancing antioxidant activity in fermented Ziziphi Spinosae Semen with Poria cocos.
Ze LI ; Yu-Jun XIE ; Hui-Zhu DUAN ; Xiao-Fang CUI ; Xiang-Ping PEI ; Yan YAN ; Chen-Hui DU
China Journal of Chinese Materia Medica 2021;46(3):620-629
In this study, the antioxidant property changes in fermented Ziziphi Spinosae Semen(FZSS) with Poria cocos were analyzed by DPPH, ABTS and FRAP methods. Then the content determination of active ingredients and ~1H nuclear magnetic resonance(~1H-NMR) spectroscopy were also used to investigate the mechanism of FZSS with P. cocos in enhancing the antioxidant activity. The results showed that the content of active ingredients such as total phenols, total saponins and total polysaccharides were significantly increased during the fermentation time. The results of ~1H-NMR metabonomics showed that the contents of amino acids such as leucine, lysine, valine and alanine, nitrogen compounds such as creatine, creatinine, and betaine, and secondary metabolites, for instance, jujuboside A and spinosin were higher after fermentation, and above components showed positive correlation with antioxidant capacity in Pearson correlation analysis. Therefore, it was inferred that the enhancement of antioxidant activity of FZSS may be the result of the joint action of various chemical components. This study preliminarily clarified the mechanism of FZSS in enhancing the antioxidant activity, and provided new research ideas for the product development and utilization of FZSS.
Antioxidants
;
Chromatography, High Pressure Liquid
;
Drugs, Chinese Herbal
;
Poria
;
Semen
;
Wolfiporia
;
Ziziphus
9.Study on the mechanism of Flos Puerariae and Semen Hoveniae in treatment of alcoholic liver injury based on network pharmacology and molecular docking.
Yanan WANG ; Xiaoming YAN ; Qingyu ZHANG ; Aihua SONG ; Fei HAN
Journal of Zhejiang University. Medical sciences 2020;49(6):714-724
OBJECTIVE:
To explore the mechanism of Flos Puerariae and Semen Hoveniae in treatment of alcoholic liver injury (ALI) based on network pharmacology and molecular docking.
METHODS:
The information of chemical constituents and targets of Flos Puerariae and Semen Hoveniae was collected from TCMSP and Swiss databases, and the threshold values of oral bioavailability (OB) ≥ 30%, drug likeness (DL) ≥0.18 were used to screen the potential active compounds. The GeneCard and DrugBank databases were used to obtain the targets corresponding to ALI. The common targets were queried using Venn Diagram, and the network of PPI and Gene Ontology (GO) functional enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were performed through DAVID and Reactome database. Autodock Vina software was used for molecular docking of potential ingredients and key targets.
RESULTS:
A total of 21 potential active compounds and 431 therapeutic targets were gathered in Flos Puerariae and Semen Hoveniae, which involved 273 biological functions, 90 KEGG pathways and 362 Reactome pathways. The GO functions involved protein binding, ATP binding, etc.; the KEGG pathways mainly included PI3K-Akt signaling pathway and TNF signaling pathway; the Reactome pathways contained signal transduction and immune system, etc. The results of molecular docking showed that 21 potential active ingredients had good affinity with the core targets Akt1, TP53 and IL-6.
CONCLUSIONS
The network pharmacology and molecular docking analysis demonstrate the synergetic effect of Flos Puerariae and Semen Hoveniae with multi-compounds, multi-targets and multi-pathways in the treatment of ALI; and also predict the possible medicinal substance, key targets and pathways, which provides clues for the new drug development and mechanism research.
Animals
;
Computer Simulation
;
Drugs, Chinese Herbal/therapeutic use*
;
Lepidoptera/chemistry*
;
Liver/drug effects*
;
Liver Diseases, Alcoholic/therapy*
;
Molecular Docking Simulation
;
Phosphatidylinositol 3-Kinases/metabolism*
;
Plant Extracts/therapeutic use*
;
Rhamnaceae/chemistry*
;
Signal Transduction/drug effects*
10.Investigation of aflatoxins,mycobiota,and toxigenic fungi during post-harvest handling of Ziziphi Spinosae Semen.
Xi-Mei ZHANG ; Wei-Wei GAO ; Yan-Hong HAO ; Xiao-Lin JIAO ; Bao-Lin GUO ; Ya-Lin XUE ; Jian-Ting BAI ; Zhen-Hong LEI
China Journal of Chinese Materia Medica 2019;44(10):2009-2014
Ziziphi Spinosae Semen is one of the Chinese herbal medicine being susceptible to aflatoxins contamination. To investigate the sources of aflatoxins contamination and toxigenic fungi species on Ziziphi Spinosae Semen,32 samples were collected from multiple steps during the post-harvest processing in this study. Aflatoxins in these samples were determined by immunoaffinity column and HPLC coupled with post-column photochemical derivatization. The dilution-plate method was applied to the fungi isolation. The isolated fungi strains were identified by morphological characterization and molecular approaches. The results showed that aflatoxins were detected in 28 samples from every step during the processing of Ziziphi Spinosae Semen. Three samples were detected with aflatoxin B_1 and 2 samples with both aflatoxin B_1 and total aflatoxin exceeding the limit of Chinese Pharmacopoeia. Especially the samples from the washing step,with the highest detected amounts of AFB_1 and AFs were reached 94. 79,121. 43 μg·kg~(-1),respectively. All 32 samples were contaminated by fungi. The fungal counts on the newly harvested samples were 2. 20 × 10~2 CFU·g~(-1). Moreover,it increased as tphreocessing progresses,and achieved 1. 16×10~6 CFU·g~(-1) after washing. A total of 321 isolates were identified to 17 genera. Aspergillus flavus was the main source of aflatoxins during the processing and storage of Ziziphi Spinosae Semen. One isolate of A. flavus was confirmed producing AFB_1 and AFB_2. The fungal count was significantly increased by composting,and Aspergillus was the predominant genus after shell breaking. The contamination level of aflatoxins was increased by composting and washing.
Aflatoxins
;
analysis
;
Aspergillus
;
Chromatography, High Pressure Liquid
;
Fungi
;
isolation & purification
;
Seeds
;
chemistry
;
microbiology
;
Ziziphus
;
chemistry

Result Analysis
Print
Save
E-mail