scholarly journals ARE THE PLANTS OF THE FAMILY HYDROCHARITACEAE A NEW SOURCE OF TANNINS?

2018 ◽  
pp. 179-184
Author(s):  
Елена (Elena) Анатольевна (Аnatol'evna) Алехина (Alekhina) ◽  
Андрей (Аndrej) Николаевич (Nikolaevich) Ефремов (Efremov) ◽  
Ольга (Ol'ga) Александровна (Aleksandrovna) Емельянова (Emelyanova)

The plants of the families Salicaceae, Fagaceae, Pinaceae are traditional sources of tannins. However, earlier in the leaf tissues of some marine (Enhalus, Thalassia) and freshwater (Stratiotes) genuses of the family Hydrocharitaceae, idioblasts containing condensed tannins were found. In this regard, the purpose of the study was to determine the content of tannins in the phytomass of plants of the family Hydrocharitaceae (Hydrocharis morsus-ranae, Hydrilla verticillata, Stratiotes aloides, Egeria densa, Elodea canadensis) and medicinal plants − traditional sources of tannins (Quercus robur, Urtica dioica, Bidens tripartita).As a result of the research hydrolyzed tannins has been found in Hydrocharis morsus-ranae, and a mixture of hydrolyzed and condensed tannins in Stratiotes aloides, Elodea canadensis, Egeria densa, Hydrilla verticillata. Stratiotes aloides (3.1±0.1% of dry matter) and Hydrilla verticillata (2.8±0.1%) are characterized by the greatest content of tannins, Elodea canadensis (1.1 ± 0.1%) characterized by the minimal content. The shelf life of the dried phytomass does not affect the content of tannins. Statistical processing of the results of determination of tannins in the phytomass Hydrocharis morsus-ranae, Stratiotes aloides and Elodea canadensis, performed in different years, showed their convergence.The results of these studies allow us to consider the plants of the family Hydrocharitaceae as a potential source of tannins, comparable to such official sources as Urtica dioica and Bidens tripartita.

2020 ◽  
Author(s):  
Miwa OZAWA ◽  
Seiko UCHINO ◽  
Jungetsu SEI ◽  
Kazuyoshi UEHARA

Abstract BackgroundWith a rapidly aging population, the importance of promoting end-of-life care at home has been pointed out. Home-visit nurses play an important role as professionals in charge of home care, and pre- and post- bereavement care for bereaved families is included in home-visit nursing services. However, bereaved families are not always provided with care after bereavement in Japan. This present study aims to investigate the relationship between the provision rates of pre- and post-bereavement care for the patient family and the demographics of home-visit nurses through a survey of home-visit nurses, and to clarify the details of post-bereavement care and the reasons why the care is employed, exploratorily through a survey of the managers of home-visit nursing stations.MethodsA self-rating anonymous questionnaire survey was conducted with 2,400 facilities (including 2,200 facilities randomly selected from among the members of Home-Visit Nursing Stations of the National Nursing Business Association). For the analysis, simple aggregation was used and the statistical processing employed SPSS ver21.0.ResultsA total of 680 valid responses were analyzed. The mean length of home-visit nursing experience was 10.6 years and that of hospital nursing experience was 15.2 years. The provision rate of post-bereavement care was 90% or higher in most of the identified items, excluding “Provided continued support/life planning until the family fully recovers social life”. For the provision of post-bereavement care, most items exceeded 70%, but excluding “Provided continued support until the family fully recovers social life”, and “Involved in building a life after bereavement”.Compared to the participants with less than 5 years of home-visit nursing experience, those with 10 years or longer experience had statistically significantly higher rates of providing post-bereavement care in more than half of the identified items. Home-visit nursing facilities with 24-hour services had statistically significantly higher rates of providing care in more than half of the items of both of pre- and post-bereavement care, compared to the facilities without 24-hour services. About 70% of the managers think that bereaved families need follow-up, and visited the families as a post-bereavement care.


2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Ahmad Farid Abu Bakar ◽  
Ismail Yusoff ◽  
Ng Tham Fatt ◽  
Faridah Othman ◽  
Muhammad Aqeel Ashraf

The potential of three submerged aquatic plant species (Cabomba piauhyensis, Egeria densa, andHydrilla verticillata) to be used for As, Al, and Zn phytoremediation was tested. The plants were exposed for 14 days under hydroponic conditions to mine waste water effluents in order to assess the suitability of the aquatic plants to remediate elevated multi-metals concentrations in mine waste water. The results show that theE. densaandH. verticillataare able to accumulate high amount of arsenic (95.2%) and zinc (93.7%) and resulted in a decrease of arsenic and zinc in the ambient water. On the other hand,C. piauhyensisshows remarkable aluminium accumulation in plant biomass (83.8%) compared to the other tested plants. The ability of these plants to accumulate the studied metals and survive throughout the experiment demonstrates the potential of these plants to remediate metal enriched water especially for mine drainage effluent. Among the three tested aquatic plants,H. verticillatawas found to be the most applicable (84.5%) and suitable plant species to phytoremediate elevated metals and metalloid in mine related waste water.


Author(s):  
Geeta Rawat ◽  
Alka Bameta ◽  
A. K. Gaur

Urtica dioica (Stinging nettle) belonging to the family Urticaceae is a medicinal plantfound in the Himalayas region from Kashmir to Kumaon region (Uttarakhand.). In Himalayan region, this plant is used for the daily purpose as food as well as to serve animals. It contains various phytochemicals like phenolic acid, coumarins, flavanols, bioflavonoids, Flavan-3-ols etc which is used to cure many diseases like arthritis, constipation, Pulmonary, Liver, Intestine, Kidney, Diabetes, Fungal infections, anti-inflammatory, internal injury and wounds. It also has hepatoprotective activity, anti‑hyperlipidemic activity, diuretic activity, antimicrobial activity, anticancer activity. Researchers have reported about 30 species with 47 genera and 1,300 species worldwide used to treat different diseases. Medicinal plants have proved to be the “backbone” of traditional medical system which signifies that developing countries depend upon medicinal plants for therapeutic use.


Rodriguésia ◽  
2017 ◽  
Vol 68 (1) ◽  
pp. 43-50 ◽  
Author(s):  
Arthur Rodrigues Lourenço ◽  
Claudia Petean Bove

Resumo A família Hydrocharitaceae é cosmopolita; composta por 17 gêneros e 127 espécies. São ervas aquáticas fixas ou livres, flutuantes, submersas ou emersas, em água doce, salobra ou salgada. No Brasil ocorrem seis gêneros e cerca de 15 espécies. A fim de conhecer a real diversidade da família no estado do Rio de Janeiro foi realizado o levantamento em herbários e coletas. Registraram-se seis espécies autóctones e duas alóctone em cultivo. Apalanthe granatensis, encontrada em represas, rios e lagoas de água doce, possui flores bissexuais. Egeria densa, semelhante a A. granatensis, distingue-se pelas flores unissexuais. Halophila decipiens, ocorre em praias da Baia de Guanabara; caracteriza-se pelo caule rizomatoso e folhas elípticas. Limnobium laevigatum, ocorre flutuando livremente em lagoas e emersa em alagados, possui folhas flutuantes com espessamento aerenquimatoso abaxial e/ou folhas emersas sem espessamento. Najas arguta var. arguta, exibe caule inerme, folhas concentradas no ápice dos ramos e semente fusiforme, Najas marina, apresenta dentes no caule e nervura principal e semente elíptica; ambas encontradas em lagoas costeiras. Elodea canadensis e Vallisneria sp. foram encontradas em cultivo.


1998 ◽  
Vol 76 (1) ◽  
pp. 130-133 ◽  
Author(s):  
Koei Hamana ◽  
Masaru Niitsu ◽  
Keijiro Samejima

Four aquatic plants were tested for the occurrence of unusual polyamines. The leaves of the aquatic plants tested ubiquitously contained homospermidine in addition to usual polyamines such as diaminopropane, putrescine, cadaverine, spermidine, spermine, and agmatine. Brasenia schreberi and Nuphar japonicum belonging to the family Nymphaeaceae contained aminopropylhomospermidine. Norspermidine and norspermine were detected in the blackweed Hydrilla verticillata belonging to Hydrocharitaceae. Thermospermine was detected in Brasenia schreberi. A novel tetraamine, N,N'-bis(3-aminopropyl)-1,2-ethanediamine (NH2(CH2)3NH(CH2)2NH(CH2)3NH2), was discovered in the aquatic plant Nuphar japonicum. This is the first report of the occurrence of N4-methylspermidine (NH2(CH2)3N(CH3)(CH2)4NH2) in the water chestnut Trapa natas belonging to the family Hydrocaryaceae. Key words: aquatic plants, polyamine, bis(aminopropyl)ethandiamine, methylspermidine.


2012 ◽  
Vol 49 (1) ◽  
pp. 65-72 ◽  
Author(s):  
George Kofidis ◽  
Artemios M. Bosabalidis

Abstract Seasonal distribution of phenolics was studied in leaves of 3 species of the family Lamiaceae: Origanum vulgare L., Mentha spicata L., and Clinopodium vulgare L. Phenolic compounds were identified in fresh leaves by a histochemical test and quantified morphometrically by point-counting analysis. The summer leaves (August) of O. vulgare contained the highest amounts of phenolics, as compared to M. spicata and C. vulgare. Phenolics were abundant in all leaf tissues (upper and lower epidermis, palisade and spongy parenchyma) of O. vulgare, but mainly in epidermal cells of M. spicata. In case of C. vulgare, however, phenolics were mostly present in the spongy parenchyma of the mesophyll. High amounts of phenolics in the summer leaves of these aromatic plants appeared to impart protection from harmful insects, microorganisms, and drought stress, rather than from UV-B radiation.


2018 ◽  
Vol 9 (2) ◽  
pp. 81-92
Author(s):  
Iryna Kocherhina

Aim. The aim of the paper is to present the results of research on the types of emotional self-regulation of women who have suffered from psychological abuse in family relations. Methods. 140 Ukrainian women who suffered from psychological abuse in the family were interviewed. For the analysis of the obtained results, methods of statistical processing of data were used. Results. It has been established that women who were victims of psychological abuse from members of their family may have different types of emotional self-regulation: "Emotionally unstable," "Adaptive," "Spontaneous." It is shown that women with emotionally unstable types of emotional self-regulation are emotionally unstable during psychological abuse in the family, which is manifested in their anxiety, tension, depression, self-criticism. It is said that women who are referred to as having the adaptive type of emotional self-regulation possess a sufficient level of neuropsychic stability and self-control and it has been established that women who are characterized by a spontaneous type of emotional self-regulation, when exposed to psychological abuse, have a low level of self-control, which indicates spontaneity and impulsivity in relationships with others. Conclusions. Еmotional self-regulation does not act as a tool to cancel negative experiences, but it is a change in these experiences for other that helps to optimize their condition. Еmotional self-regulation and the ability to manage one's own psychical state for the preservation of mental health are important in the context of psychological abuse in the family. Furthermore, it is emphasised on different types of emotional self-regulation of women in situations of psychological abuse in the family.


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