scholarly journals Preparation and evaluation of the physicochemical and stability properties of three herbal tea blends derived from four native herbs

2021 ◽  
Vol 19 (2) ◽  
pp. 448-465
Author(s):  
Philip F. Builders ◽  
Boma B. Mohammed ◽  
Yahaya Z. Sule
Keyword(s):  
Physicochemical Properties ◽  
Antioxidant Properties ◽  
Herbal Product ◽  
Zingiber Officinale ◽  
Storage Conditions ◽  
Citrus Limon ◽  
Herbal Tea ◽  
Stability Parameters ◽  
Stability Properties ◽  
Preparation And Evaluation

Herbal teas consist of mono and sometimes poly-herbal recipes of herbs with acclaimed health benefits which are often brewed as infusion or decoction. Three variants of poly-herbal teas containing Herbiscus sabdariffa, Moringa oleifera, Citrus limon, and Zingiber officinale were prepared and evaluated for their physicochemical and stability properties. Intrinsic physicochemical properties that include organoleptic, ash value, pH of brew solutions, extractive matter as well as non-intrinsic properties such as moisture content, flow and particle size of granules and dust leak from teabags were determined. Also, the effects of stressful storage conditions on some physicochemical properties were evaluated. The different tea blends showed remarkable differences in their physicochemical properties. The products also showed discrepancies in stability parameters such as appearance, pH of the brew and antioxidant properties when stored under different conditions. In all, the herbal tea showed good physicochemical and stability properties that are characteristic of a good finished herbal product.

scholarly journals Relationships Linking the Colour and Elemental Concentrations of Blossom Honeys with Their Antioxidant Activity: A Chemometric Approach

Agriculture ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 702
Author(s):  
Monika Kędzierska-Matysek ◽  
Anna Teter ◽  
Małgorzata Stryjecka ◽  
Piotr Skałecki ◽  
Piotr Domaradzki ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Physicochemical Properties ◽  
Black Locust ◽  
Antioxidant Properties ◽  
Principal Component ◽  
Botanical Origin ◽  
Antioxidant Parameters ◽  
Colour Parameters ◽  
Hue Angle ◽  
Chemometric Approach

The antioxidant activity of honey depends on the botanical origin, which also determines their physicochemical properties. In this study, a multivariate analysis was used to confirm potential relationships between the antioxidant properties and colour parameters, as well as the content of seven elements in five types of artisanal honey (rapeseed, buckwheat, linden, black locust, and multifloral). The type of honey was found to significantly influence most of its physicochemical properties, colour parameters, and the content of potassium, manganese and copper. Antioxidant parameters were shown to be significantly positively correlated with redness and concentrations of copper and manganese, but negatively correlated with the hue angle and lightness. The principal component analysis confirmed that the darkest buckwheat honey had the highest antioxidant activity in combination with its specific colour parameters and content of antioxidant minerals (manganese, copper and zinc). The level of these parameters can be potentially used for the identification of buckwheat honey.

scholarly journals Changes of Physicochemical Properties of Starch Syrups Recommended for Winter Feeding of Honeybees during Storage

Agriculture ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 374
Author(s):  
Teresa Szczęsna ◽  
Ewa Waś ◽  
Piotr Semkiw ◽  
Piotr Skubida ◽  
Katarzyna Jaśkiewicz ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Physicochemical Properties ◽  
Physicochemical Parameters ◽  
Storage Temperature ◽  
Storage Conditions ◽  
Different Temperatures ◽  
And Storage ◽  
Bee Colonies ◽  
Temperature Time ◽  
Winter Feeding

The aim of this study was to determine the influence of storage temperature and time on physicochemical parameters of starch syrups recommended for the winter feeding of bee colonies. The studies included commercially available three starch syrups and an inverted saccharose syrup that were stored at different temperatures: ca. 20 °C, 10–14 °C, and ca. 4 °C. Physicochemical parameters of fresh syrups (immediately after purchase) and syrups after 3, 6, 9, 12, 15, 18, 21, and 24 months of storage at the abovementioned temperatures were measured. It was observed that the rate of unfavorable changes in chemical composition of starch syrups and the inverted saccharose syrup, mainly the changes in the 5-hydroxymethylfurfural (HMF) content, depended on the type of a syrup and storage conditions (temperature, time). Properties of tested starch syrups intended for winter feeding of bees stored at ca. 20 °C maintained unchanged for up to 6 months, whereas the same syrups stored at lower temperatures (10–14 °C) maintained unchanged physicochemical parameters for about 12 months. In higher temperatures, the HMF content increased. To date, the influence of this compound on bees has not been thoroughly investigated.

scholarly journals Design of Aerogels, Cryogels and Xerogels of Alginate: Effect of Molecular Weight, Gelation Conditions and Drying Method on Particles’ Micromeritics

Molecules ◽  
2019 ◽  
Vol 24 (6) ◽  
pp. 1049 ◽  
Author(s):  
Rosalía Rodríguez-Dorado ◽  
Clara López-Iglesias ◽  
Carlos García-González ◽  
Giulia Auriemma ◽  
Rita Aquino ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Physicochemical Properties ◽  
Textural Properties ◽  
Supercritical Drying ◽  
Processing Parameters ◽  
Storage Conditions ◽  
Drying Methods ◽  
Drying Method ◽  
Molecular Weights ◽  
Nanostructured Particles

Processing and shaping of dried gels are of interest in several fields like alginate aerogel beads used as highly porous and nanostructured particles in biomedical applications. The physicochemical properties of the alginate source, the solvent used in the gelation solution and the gel drying method are key parameters influencing the characteristics of the resulting dried gels. In this work, dried gel beads in the form of xerogels, cryogels or aerogels were prepared from alginates of different molecular weights (120 and 180 kDa) and concentrations (1.25, 1.50, 2.0 and 2.25% (w/v)) using different gelation conditions (aqueous and ethanolic CaCl2 solutions) and drying methods (supercritical drying, freeze-drying and oven drying) to obtain particles with a broad range of physicochemical and textural properties. The stability of physicochemical properties of alginate aerogels under storage conditions of 25 °C and 65% relative humidity (ICH-climatic zone II) during 1 and 3 months was studied. Results showed significant effects of the studied processing parameters on the resulting alginate dried gel properties. Stability studies showed small variations in aerogels weight and specific surface area after 3 months of storage, especially, in the case of aerogels produced with medium molecular weight alginate.

scholarly journals Levantamento etnobotânico na Comunidade Rural de Santa Marta, Município de Corrente, Estado do Piauí, Nordeste do Brasil

2020 ◽  
Vol 7 (17) ◽  
pp. 1483-1498
Author(s):  
Cecília de Souza Carvalho ◽  
Patrine Nunes Gomes ◽  
Luzirrany Soares Lopes ◽  
Miria Cassia Oliveira Aragão ◽  
Lizandro Pereira de Abreu ◽  
...  
Keyword(s):  
Zingiber Officinale ◽  
Rosmarinus Officinalis ◽  
Citrus Limon ◽  
Mata Atlântica ◽  
Pimpinella Anisum ◽  
Lippia Alba ◽  
Zingiber Officinale Roscoe ◽  
Mata Atlantica ◽  
Rosmarinus Officinalis L ◽  
Mentha Crispa

O Brasil é um país bastante rico em biodiversidade e com isso as comunidades tradicionais e agricultores fazem o cultivo dessa ampla diversidade de espécies e de variedades vegetais. Este fator agrega grande relevância aos estudos etnobotânicos, onde busca-se resgatar o conhecimento sobre as plantas nas comunidades rurais, visando manter a interrelação entre a utilização de plantas medicinais e o conhecimento das pessoas. O presente estudo teve como objetivo verificar o perfil socioeconômico e a percepção das pessoas sobre o conhecimento botânico do uso e apropriação das plantas medicinais utilizadas na comunidade rural de Santa Marta, Município de Corrente, Estado do Piauí. A pesquisa foi realizada no período de julho de 2018 a março de 2019, na Comunidade Rural de Santa Marta, sendo ela destinada às pessoas com idade igual ou superior a 40 anos, em virtude de possuírem mais conhecimento sobre o uso de plantas medicinais. Para isso, foi realizada uma caminhada transversal com alguns moradores e a aplicação de um questionário semiestruturado de caráter quali-quantitavo. Foi registrado um total de 90 espécies de plantas medicinais utilizadas pelos moradores da Comunidade Rural de Santa Marta. Após identificar as espécies juntamente com os moradores e ainda com a realização de levantamentos bibliográficos, verificou-se que muitas destas espécies são típicas do Cerrado, mas existem a ocorrência de algumas predominantes da Caatinga e Mata Atlântica. As espécies mais usadas pelos entrevistados são a erva-doce Pimpinella anisum L. e o hortelã Mentha crispa L., mencionadas por cerca de 36,36% dos entrevistados, a melancia-da-praia Solanum agrarium Sendtn. (27,27%), a erva-cidreira Lippia alba Mill. N.E.Br. (18,18%), seguido do alecrim Rosmarinus officinalis L., do gengibre Zingiber officinale Roscoe, da imburana Amburana cearensis A.C. Smith e do limão Citrus limon L. Burm. (13,64%) e do pequi Caryocar coriaceum Wittm (4,54%). Dentre as espécies identificadas muitas delas são utilizadas para o tratamento de enfermidades que acometem a vida das pessoas como, diarreia, hipertensão, infecção no sistema urinário, colesterol, entre outros. Quanto à parte vegetal utilizada nas preparações dos remédios caseiros, observou-se uma frequência maior de uso das folhas, seguido de caule e fruta, raízes, flores e óleo. Por meio das informações obtidas foi possível realizar o levantamento etnobotânico das plantas medicinais utilizadas na Comunidade Rural de Santa Marta e, além disso, do uso e do conhecimento que as pessoas possuem. Ao construir essa relação entre comunidade e o conhecimento sobre uso das plantas medicinais, torna-se de grande valia para a vida das pessoas, propiciando a contribuição para a conservação da cultura regional, contribuindo assim na sua valorização.

scholarly journals An Investigation of Moroccan Vinegars: Their Physicochemical Properties and Antioxidant and Antibacterial Activities

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Driss Ousaaid ◽  
Hamada Imtara ◽  
Hassan Laaroussi ◽  
Badiaa Lyoussi ◽  
Ilham Elarabi
Keyword(s):  
Physicochemical Properties ◽  
Bioactive Compounds ◽  
Antibacterial Activities ◽  
Storage Conditions ◽  
Production Methods ◽  
Maximum Value ◽  
Processing And Storage ◽  
And Storage ◽  
Excellent Source

Vinegar is a natural product rich in bioactive compounds such as phenols, flavonoids, and organic acids. Several factors affect the quality of vinegars such as apple origin, environmental conditions, production methods, processing, and storage conditions. We investigated the quality of apple vinegars as well as their physicochemical properties and the antioxidant and antibacterial activities of vinegars collected from different areas in Morocco. For physicochemical properties, the outcomes showed the following values: pH (3.18–3.83), electrical conductivity (2.11–2.90), acidity (0.24–5.6), Brix (3.25–6), and density (1.0123–1.0233). The polyphenols content of samples was 68.91 mg AG/100 mL in sample S6 as the minimum value and 147.54 mg AG/100 mL in sample S2 as the maximum value. The best ability to scavenge the DPPH radical was observed in sample S3 (IC50 = 0.45 ± 0.013 µL/mL). Sample S2 showed moderate antibacterial effect against microorganisms tested with MICs ranging from 0.78 µL/mL to 1.125 µL/mL and with a diameter of inhibition ranging from 15.65 mm to 27.65 mm. In addition, a strong correlation was observed between the antibacterial activity of vinegars and physicochemical parameters (pH and total acidity). These outcomes have shown that our vinegar samples are an excellent source of bioactive compounds with potent antioxidant and antibacterial potentials.

scholarly journals Zanjabeel (Zingiber officinale Roscoe.): An Evidence-Based Review of Anti-nociceptive, Anti-inflammatory, Antioxidant, and Antimicrobial Properties

2021 ◽  
pp. 26-35
Author(s):  
Fatima Khan ◽  
Mohd Nayab ◽  
Abdul Nasir Ansari
Keyword(s):  
Therapeutic Potential ◽  
Antioxidant Properties ◽  
Plant Secondary Metabolites ◽  
Zingiber Officinale ◽  
Extensive Study ◽  
The Body ◽  
Wide Range ◽  
Zingiber Officinale Roscoe ◽  
Medicinal Properties ◽  
Anti Inflammatory

Ginger has been appreciated for over 2500-3000 years in many parts of the world due to its numerous scientific properties. The ginger plant (Zingiber officinale Roscoe) belongs to the Zingiberaceae family. It is a known food and flavoring ingredient reputed for its wide range of medicinal properties that have been widely used in Chinese, Ayurvedic, and Unāni Tibb worldwide, since antiquity. Ginger has long been used to cure a variety of ailments, including diarrhea, stomach discomfort, indigestion, and nausea. It is a versatile herb with phenomenal phytotherapeutic and medicinal properties. Active ingredients available in ginger such as 6-gingerol, 6-shogaol, 6-paradol, and zingerone are responsible for upgrading enzyme actions and balancing circulation through rejuvenating the body with physical re-strengthening. Gingerols, the key phenolic plant secondary metabolites responsible for its distinct flavor and health benefits, are found in the rhizome of ginger Extensive study has been undertaken over the last two decades to uncover bioactive ingredients and the therapeutic potential of ginger. This review considers ginger's chemical composition and the most recent study findings on its possible health advantages, such as analgesic, anti-inflammatory, antibacterial, and antioxidant properties due to its phytochemistry. Overall, clinical trials are needed to confirm these prospective various health advantages of ginger in human subjects and the most efficacious dosage, based on the current body of scientific literature.

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