scholarly journals Comparison of volatile compounds in different parts of fresh Amomum villosum Lour. from different geographical areas using cryogenic grinding combined HS–SPME–GC–MS

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Ling-Xiao Chen ◽  
Yun-Feng Lai ◽  
Wei-Xiong Zhang ◽  
Jing Cai ◽  
Hao Hu ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Volatile Compounds ◽  
Biological Activities ◽  
Ion Source ◽  
Bornyl Acetate ◽  
Principle Components Analysis ◽  
Cryogenic Grinding ◽  
Fruit Samples ◽  
Amomum Villosum ◽  
Different Parts

Abstract Background The essential oil is one of the main active ingredients of Amomum villosum Lour. However, volatile compounds are easily lost during the drying, storage and even sample preparation procedure. Therefore, using fresh samples can obtain more accurately data for qualitative and comparative analysis. Methods In this study, the volatile compounds in different parts of fresh A. villosum from different origins were systemic analyzed and compared by using cryogenic grinding combined HS–SPME–GC–MS for the first time. GC–MS analyses were performed on a 6890 Series GC instrument coupled to a 5973 N mass spectrometer. The volatile compounds were extracted by the SPME fiber (100 μm PDMS). Analytes separation was achieved on a HP-5MS capillary column. The oven temperature was initially programmed at 70 °C, then raised 4 °C/min to reach 125 °C and then programmed at 0.5 °C/min to 133 °C, then at 6 °C/min to 170 °C and finally, at 20 °C/min to 280 °C held for 2 min. The temperatures of the injection port, ion source and transfer line were set at 250 °C, 230 °C and 280 °C, respectively. Results Forty-eight main compounds were identified in different parts of fresh A. villosum. The most abundant components in fresh fruit samples were camphor (3.91%), bornyl acetate (10.53%), caryophyllene (8.70%), β-bisabolene (11.50%), (E)-nerolidol (14.82%) and cubenol (10.04%). This is quite different with that of dried samples analyzed in our previous work. As different parts of the same plant, many common components with biological activities were detected in fruit and other parts. In principle components analysis (PCA) and hierarchical clustering analysis (HCA), four parts of A. villosum were divided into different groups clearly. Additionally, fruit and root samples also could be divided into two subgroups (HCA) in accordance with their regions. Conclusion The developed method was successfully used for qualitative and comparative analysis of volatile compounds in fresh A. villosum samples. Additionally, using fresh samples can obtain much more information which is helpful for their performance in the fields of functional foods, agriculture and biomedical industry. Furthermore, our research is helpful for comprehensive utilization and quality control of A. villosum.

Chemical Constituents of Functional Food Amomum villosum to Combat Human Diseases

2021 ◽  
Vol 01 ◽  
Author(s):  
Yawen Zeng ◽  
Muhammad Kazim Ali ◽  
Wei He ◽  
Lin Deng ◽  
Xiaomeng Yang ◽  
...  
Keyword(s):  
Data Mining ◽  
Volatile Compounds ◽  
Functional Food ◽  
Chemical Constituents ◽  
Volatile Oil ◽  
Bornyl Acetate ◽  
Edible Plant ◽  
Different Types ◽  
Stems And Leaves ◽  
Amomum Villosum

Background: Amomum villosum is an important medicinal and edible plant owing to its valuable compositions of volatile and non-volatile compounds. Objective : In order to reveal the chemical constituents and medicinal values of A. villosum against various diseases. Methods : A critical and comprehensive data mining from 2004 to 2021 was performed based on CNKI, PubMed, and google. Results: 120 Compounds have been reported collectively in seeds, peels, and rhizomes of A. villosum, 10 compounds were common however the content of bornyl acetate was maximum in seeds and peels. Similarly, Amomi fructus of China and Vietnam showed 59 different types of volatile compounds while 13 were common, the round large black fruits (1.56% bornyl acetate and 4.05% volatile oil) and long small red fruits type (1.64% bornyl acetate and 3.04% volatile oil) from China showed good quality and high medicinal values. In addition, Amomi fructus manifested 30~40 kinds of nonvolatile compounds, i.e., phenolic, polysaccharides, saponins, flavonoid, vanillic acid, catechin, epicatechin, polydatin, isoquercitrin, quercitrin, glycosides, inorganic and organic acids. Conclusion: A. villosum is widely used as anti-inflammatory, gastrointestinal protection, anti-obesity, anticancer, antioxidant, analgesic, bacteriostasis, antidiabetic and anti-COVID-19 etc. So, it is manifested that the fruit, flowers, roots, stems, and leaves of A. villosum can be used as a medicine, especially fruit (Amomi fructus=Sharen) as the best functional food for the COVID-19 treatment and gastrointestinal protection as well as prevention of other diseases.

scholarly journals Study and Analysis of Anti Vibratory Passive and Active Methods Applied to Complex Mechanical System

2012 ◽  
Vol 7 (2) ◽  
Author(s):  
Cédric Lopez ◽  
François Malburet ◽  
André Barraco
Keyword(s):  
Experimental Study ◽  
Comparative Analysis ◽  
Mechanical System ◽  
High Speed ◽  
Test Bench ◽  
Minimization Method ◽  
Controlled System ◽  
Proper Frequency ◽  
Different Parts ◽  
Methods Of Control

This paper studies problematic of a mechanical system composed of different coupled parts submitted to a high speed shock and proposes analysis of anti vibratory passive and active methods based on an experimental and theoretical coupled approach. After a shock, different parts of the system oscillate. If one of them is excited at a particular frequency, such as its proper frequency, important oscillations appear and can lead to the deterioration of the system by introducing important stresses. In this paper, we propose an analysis in order to understand this kind of problem and what we can do to avoid it. Firstly, we discuss problematic and we expose the studied system. In a second time, we develop two approaches of modeling that allow us to understand the phenomenon by carrying out numerical simulations. Then cross checking of model is completed via experimental study on drop test bench. Passive minimization method of vibrations based on experimental and theoretical coupled approach is exposed. Finally, a comparative analysis of different methods of control and experimental results of controlled system are presented.

Review on pharmacological and phytochemical prospects of traditional medicinal plant: Persicaria hydropiper (Smartweed)

2021 ◽  
Vol 21 ◽  
Author(s):  
Abdul Nasir ◽  
Atif Ali Khan Khalil ◽  
Muhammad Zeeshan Bhatti ◽  
Ashfaq Ur Rehman ◽  
Jiayi Li ◽  
...  
Keyword(s):  
Medicinal Plant ◽  
Traditional Medicine ◽  
Northern Hemisphere ◽  
Biological Activities ◽  
Folk Medicine ◽  
Present Review ◽  
Polygonum Hydropiper ◽  
Wide Range ◽  
Pharmacological Data ◽  
Different Parts

: Persicaria hydropiper (L.) Delarbre (family Polygonacea), commonly known as Polygonum hydropiper, is a popular medicinal plant used in traditional medicine. The plant is indigenous to the tropical northern hemisphere and temperate zone including China, Bangladesh, India, and Japan. The plant is used in folk medicine for numerous ailments such as hemorrhoids, antifertility, diarrhea, and dyspepsia. Its medicinal usage in Unani, Ayurveda, Siddha, and other traditional medicine is well-recognized. So far, a wide range of active phytochemicals of this plant has been identified, such as flavonoids, sulphated flavonoids, terpenoids, anthraquinones, steroids, coumarin, simple phenolics, and others. Pharmacological data reported in the literature suggest that various parts of P. hydropiper exhibit antimicrobial, antioxidant, hypoglycemic, antidepressant, cardioprotective, hepatoprotective, anticancer, and antifertility effects. The present review aim is to compile the coherently document research on the phytochemical, pharmacological, and biological activities of P. hydropiper from different parts of the globe.

scholarly journals Pharmacological Values and Phytochemical Properties of Devil’s Cotton (Ulatkambal) - A Review

2019 ◽  
Vol 22 (1) ◽  
pp. 109-116 ◽  
Author(s):  
Nargis Sultana Chowdhury ◽  
Farhana Farjana ◽  
Sifat Jamaly ◽  
Mst Nadira Begum ◽  
Mst Elina Akhter Zenat
Keyword(s):  
Diabetes Mellitus ◽  
Biological Activities ◽  
Pharmaceutical Journal ◽  
Ayurvedic Medicine ◽  
Asian Countries ◽  
Menstrual Disorders ◽  
Cotton Species ◽  
Published Report ◽  
The Family ◽  
Different Parts

Devil’s cotton (Ulatkambal) is a genus in the family Malvaceae, with one or two species from Asia and Australia. Literature review revealed that Abroma augusta (Devil’s cotton) is widely used in Ayurvedic medicine as a popular drug. Devil’s cotton has been claimed to possess major biological activities like anti-diabetic, analgesic, anti-inflamatory, thrombolytic, antioxidant, hypolipidemic etc. They are also utilized by the traditional local healers of different Asian countries to treat various diseases like diabetes mellitus, as uterine tonic in emmerogogue, dysmenorrhea, amenorrhoea, sterility and other menstrual disorders, rheumatic pains of joints and headache with sinusitis. Biochemical profiling of different parts of the plant demonstrated the presence of some important phytochemicals like alkaloids, abromin, sterol, friedelin, abromasterol, taroxerylacetate, taraxeral and β-sitosterol. The aim of this review was to analyze the published report based on the medicinal values of Devil’s cotton species as well to provide the updated information about the ethnomedicinal, pharmacological as well as the phytochemical properties. Bangladesh Pharmaceutical Journal 22(1): 109-116, 2019

scholarly journals Pharmacology and Phytochemistry of Ecuadorian Medicinal Plants: An Update and Perspectives

2021 ◽  
Vol 14 (11) ◽  
pp. 1145
Author(s):  
Chabaco Armijos ◽  
Jorge Ramírez ◽  
Melissa Salinas ◽  
Giovanni Vidari ◽  
Alírica I. Suárez
Keyword(s):  
Chemical Composition ◽  
Medicinal Plants ◽  
Secondary Metabolites ◽  
Essential Oils ◽  
Volatile Compounds ◽  
Biological Activities ◽  
Indigenous Communities ◽  
Therapeutic Agents ◽  
Practical Applications ◽  
Pharmacological Studies

The use of plants as therapeutic agents is part of the traditional medicine that is practiced by many indigenous communities in Ecuador. The aim of this study was to update a review published in 2016 by including the studies that were carried out in the period 2016–July 2021 on about 120 Ecuadorian medicinal plants. Relevant data on raw extracts and isolated secondary metabolites were retrieved from different databases, resulting in 104 references. They included phytochemical and pharmacological studies on several non-volatile compounds, as well as the chemical composition of essential oils (EOs). The tested biological activities are also reported. The potential of Ecuadorian plants as sources of products for practical applications in different fields, as well the perspectives of future investigations, are discussed in the last part of the review.

scholarly journals Comparative Analysis of the Scholars Perception about Research in Public and Private Universities in Pakistan

2018 ◽  
Vol III (II) ◽  
pp. 196-211
Author(s):  
Nasrullah Khan ◽  
Niaz Mohammad Aaijaz ◽  
Mohammad Idris
Keyword(s):  
Comparative Analysis ◽  
Intellectual Development ◽  
Practical Knowledge ◽  
Private Universities ◽  
Quality Education ◽  
Research Culture ◽  
Public And Private ◽  
Research Supervision ◽  
Thesis Writing ◽  
Different Parts

The base of a successful university in providing quality education and practical knowledge for improving the lives of the youths in terms of social, economical and intellectual development are only possible through promoting research culture. Research conduct and writing is the most important tool for identifying remedial recommendations for education and related problems. This research presents comparative analysis of the research in Public and Private Universities in Pakistan. The research identifies current research practices, their strengths and weaknesses and provides recommendations for improvement. Research supervision and writing are two different parts but in reality these are parts of a single activity which is called thesis writing process. In Pakistan, research culture is considered very difficult and complicated activity because scholars do not accept challenges and the supervisors do not take the required interest. The study highlights the areas where scholars and supervisors need improvement, more struggle, and scientific as well as academic zest.

scholarly journals Agrarian reforms of Russia at the turn of the XIX–XX centuries in the coverage of economists of the XX century

2021 ◽  
pp. 141-144
Author(s):  
I. K. Shcherbakova
Keyword(s):  
Comparative Analysis ◽  
20Th Century ◽  
19Th Century ◽  
Economic Reforms ◽  
Research Paper ◽  
Russian Empire ◽  
Agrarian Reforms ◽  
The Russian Empire ◽  
The 19Th Century ◽  
Different Parts

The article analyses the features of the development of agriculture in Russia at the end of the 19th century - the beginning of the 20th century. The paper studies and considers attempts to solve the agrarian issue in the specified period. The study considers the course and results of the reform of 1861, as well as economic reforms of the beginning of the 20th century. The author gives an assessment of these reforms, as well as the situation of the peasantry made by the leading economists of that time: N.D. Kondrat'ev, S.L. Maslov, A.V. Peshekhonov, A.V. Chayanov, and also analyses the measures aimed at alleviating the situation of the peasantry and solving the agrarian problems of that period. The research paper also presents a comparative analysis of the consequences of the 1861 reform, its impact on the solution of the agrarian issue in different parts of the Russian Empire, in particular in Poland after the Polish Uprising of 1863.

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