scholarly journals Production and characterization of beer supplemented with Hibiscus sabdariffa (Malvaceae)

2021 ◽  
Author(s):  
Justice A. Essiedu ◽  
Parise Adadi ◽  
Elena G. Kovaleva
Keyword(s):  
Hibiscus Sabdariffa

scholarly journals Characterization of continuous Hibiscus sabdariffa fibre reinforced epoxy composites

2022 ◽  
Vol 30 ◽  
pp. 096739112110609
Author(s):  
Atik Mubarak Kazi ◽  
Ramasastry DVA
Keyword(s):  
Fibre Orientation ◽  
Stress Transfer ◽  
Dynamic Mechanical Properties ◽  
Epoxy Composites ◽  
Neat Epoxy ◽  
Hibiscus Sabdariffa ◽  
Sem Images ◽  
Fibre Composites ◽  
The Matrix

The influence of fibre orientation on physical, mechanical and dynamic mechanical properties of Hibiscus sabdariffa fibre composites has been studied. The composites with longitudinal (0°), transverse (90°) and inclined (45°) fibre orientation were prepared using the hand layup technique. ASTM standards were used for characterization of continuous Hibiscus sabdariffa fibre composites. The composite with longitudinally placed fibres yields improved mechanical characteristics. The addition of longitudinal (0°) oriented continuous Hibiscus sabdariffa fibres to the epoxy enhances tensile strength by 460%, flexural strength by 160% and impact strength by 603% compared to neat epoxy. The longitudinal (0°) fibre oriented composite offers higher resistance to water absorption and thickness swelling compared to other types of composites. All continuous Hibiscus sabdariffa fibre epoxy composites possess an improved storage modulus than the neat epoxy resin. The glass transition temperature of continuous Hibiscus sabdariffa fibre composites is 8%–31% lower than that of neat epoxy. Scanning electron microscopy (SEM) images confirm the existence of voids in the matrix, fibre pullout and crack propagation near the fibre bundle, which indicates the stress transfer between fibre and matrix is non-uniform.

Pharmacological characterization of the diuretic effect of Hibiscus sabdariffa Linn (Malvaceae) extract

2012 ◽  
Vol 139 (3) ◽  
pp. 751-756 ◽  
Author(s):  
Javier Alarcón-Alonso ◽  
Alejandro Zamilpa ◽  
Francisco Alarcón Aguilar ◽  
Maribel Herrera-Ruiz ◽  
Jaime Tortoriello ◽  
...  
Keyword(s):  
Hibiscus Sabdariffa ◽  
Diuretic Effect ◽  
Pharmacological Characterization

Genetic characterization of Spermophagus niger (Coleoptera: Chrysomelidae: Bruchinae: Amblycerini) pest associated to seeds of Sorrel (Hibiscus sabdariffa L.) in Burkina Faso

2016 ◽  
Vol 6 (1) ◽  
pp. 07-14
Author(s):  
Jean Christophe Koussoubé ◽  
Fatimata Mbaye ◽  
Cheikh Abdou Khadre Mbacké Dia ◽  
Mbacké Sembène ◽  
Antoine Sanon
Keyword(s):  
Amino Acid ◽  
Burkina Faso ◽  
Genetic Parameters ◽  
Genetic Characterization ◽  
Mitochondrial Gene ◽  
Hibiscus Sabdariffa ◽  
Polymerase Chain ◽  
The One ◽  
First Time

In Burkina Faso, the seeds of sorrel, Hibiscus sabdariffa L. are attacked by a pest identified morphologically as Spermophagus niger which is maintained all year on seeds and causing considerable damages. In the current study, for the first time, genetic characterization for S. niger was performed to determine its genetic identity and place it in its phyletic group. Mitochondrial gene, the Cytochrome oxidase I (COI) of the pest was partially sequenced after extraction and amplification by Polymerase Chain Reaction (PCR). Then the variability of genetic parameters namely the number of polymorphic and monomorphic sites, the frequencies of the different nucleotides and amino acid composition were determined. The nucleotide sequence of S. niger ob-tained was submitted in Genbank and the accession number is KU710716. Nucleotide sequences of S. niger obtained and those of different species of Spermophagus and Z. subfasciatus available in the GenBank database, we determined the percentage of similarity on the one hand and kinship through Phylogenetics reconstructions on the other hand. The results showed the absence of polymorphic sites for 406 sites obtained with 36.5% of thymine, 17.5% of cytosine, adenine 31% and 15% of guanine. Leucine was the majority amino acid (14.50%); the lysine was minority amino acid (0.76%) and cysteine was absent. The percentage of similarity obtained and phylogenetics reconstructions showed that S. niger is very close to the different species of Spermophagus particularly S. drak and different from Z. sub-fasciatus.

scholarly journals Sustainable Extraction and Characterization of Hibiscus Sabdariffa Fibre (Mesta)

2019 ◽  
Vol 9 (1) ◽  
pp. 2425-2428
Keyword(s):  
Textile Industry ◽  
Detrimental Effect ◽  
Raw Materials ◽  
Hibiscus Sabdariffa ◽  
Fine Chemicals ◽  
Cultivation Conditions ◽  
Climatic Zones ◽  
Post Harvesting ◽  
Sustainable Extraction

Green fibres like flax, jute, sisal, kenaf, mesta which has been used for more than 8000 years are the present and the future raw materials not only for the textile industry but also for modern eco- friendly composites, cosmetics, medicine, food, fodder, bio- polymers, agro fine chemicals and energy. Potentially under optimum cultivation conditions they cause little or no detrimental effect on the eco- system and they can be grown in different climatic zones. Organically cultivated, they recycle the carbon dioxide in the earth’s atmosphere. In the present study the sustainable extraction and characterization of Hibiscus Sabdariffa (mesta) were studied and documented along with the chemical composition and SEM of the fibre. The fibre was extracted from the stems by microbial retting technique and its composition was studied. The fibre was extracted immediately after harvesting and post harvesting.

Characterization of microfiber isolated from Hibiscus sabdariffa var. altissima fiber by steam explosion

2018 ◽  
Vol 17 (2) ◽  
pp. 189-198 ◽  
Author(s):  
Abhilash Karakoti ◽  
Sunanda Biswas ◽  
J. Ronald Aseer ◽  
Nidhi Sindhu ◽  
M.R. Sanjay
Keyword(s):  
Steam Explosion ◽  
Hibiscus Sabdariffa

Characterization of the Climatic Rankins for Jamaica (Hibiscus sabdariffa L.) Crop in Jalisco, Mexico

2009 ◽  
Vol 8 (2) ◽  
pp. 92-101
Author(s):  
A. Perez-Gonz ◽  
P. Posos-Ponc ◽  
J. Carreon-Am ◽  
J.L. Martinez-R ◽  
J.C. Serratos-A ◽  
...  
Keyword(s):  
Hibiscus Sabdariffa
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