Antioxidant Activity and Isolation Bioactive Compounds From Roselle (Hibiscus Sabdariffa) From Various Methods and Drying Time

Purbowati, Ike Sitoresmi Mulyo; Sujiman, Sujiman; Maksum, Ali

doi:10.21107/agrointek.v13i1.4046

Cited by 4 publications

(5 citation statements)

References 3 publications

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“…Phenols and aldehydes showed higher antibacterial capacities among the ingredients of EOs, followed by alcohols, ketones, esters, and hydrocarbons [62]. By establishing hydrogen bonds with the active sites of the target enzymes and inactivating them, the hydroxyl groups found in phenolic compounds were extremely effective against a variety of bacteria [63]. Certain phenols possess antibacterial effects even at extremely low concentrations [64].…”

Section: Discussionmentioning

confidence: 99%

Chemodiversity and Bioactivity of the Essential Oils of Juniperus and Implication for Taxonomy

Hu,

Li,

Bai

et al. 2023

IJMS

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The essential oils of Juniperus are highly beneficial medicinally. The present study aimed to assess the chemodiversity and bioactivity of Juniperus formosana, Juniperus przewalskii, Juniperus convallium, Juniperus tibetica, Juniperus komarovii, and Juniperus sabina essential oils from the Qinghai-Tibet Plateau. The results revealed 92 components in six essential oils: α-pinene (2.71–17.31%), sabinene (4.91–19.83%), and sylvestrene (1.84–8.58%) were the main components. Twelve components were firstly reported in Juniperus oils, indicating that the geographical location and climatic conditions of the Qinghai-Tibet Plateau produced the unique characteristics of Juniperus essential oils. The chemodiversity of Juniperus essential oils varied greatly, with J. sabina having the most recognized components (64) and the highest chemodiversity (Shannon–Wiener index of 3.07, Simpson’s diversity index of 0.91, and Pielou evenness of 0.74). According to the chemodiversity of essential oils, the six plants were decided into the α-pinene chemotype (J. formosana), hedycaryol chemotype (J. przewalskii, J. komarovii, J. convallium, J. tibetica), and sabinene chemotype (J. sabina). PCA, HCA and OPLS-DA showed that J. formosana and J. sabina were distantly related to other plants, which provides a chemical basis for the classification of Juniperus plants. Furthermore, bioactivity tests exhibited certain antioxidant and antibacterial effects in six Juniperus oils. And the bioactivities of J. convallium, J. tibetica, and J. komarovvii were measured for the first time, broadening the range of applications of Juniperus. Correlation analysis of components and bioactivities showed that δ-amorphene, β-udesmol, α-muurolol, and 2-nonanone performed well in the determination of antioxidant activity, and α-pinene, camphene, β-myrcene, as well as (E)-thujone, had strong inhibitory effects on pathogenic bacteria, providing a theoretical basis for further research on these components.

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Section: Discussionmentioning

confidence: 99%

Chemodiversity and Bioactivity of the Essential Oils of Juniperus and Implication for Taxonomy

Hu,

Li,

Bai

et al. 2023

IJMS

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“…Flower petals were separated from the seeds and then washed with clean water and then drained. After that drying was done by using a cabinet dryer with a drying time of 7 hrs (Purbowati et al, 2018). Then the dried roselle petals were mashed and filtered with 80 mesh sieves.…”

Section: Roselle Petal Dryingmentioning

confidence: 99%

“…Total anthocyanin in roselle flower petals is 361.99 mg CGE/100 g (Wu et al, 2018). According to Purbowati et al (2018), the greater number of dry roselle would cause a greater amount of roselle surface area that come into contact with the solvent. Therefore, the amount of roselle bioactive compound which are the total phenol and anthocyanin extracted will increase.…”

Section: The Effect Of Variations In the Ratio Of Roselle Flower Petamentioning

confidence: 99%

“…Maskour et al (2013) stated that the increased ratio of solids: solvent will increase anthocyanin content within the extract. Purbowati et al (2018) stated that the greater amount of added roselle, vitamin C content within roselle extract produced will increase. This was because the amount of the roselle surface which was in contact with the water solvent was higher.…”

Section: Acidity Levelmentioning

confidence: 99%

“…Antioxidants are molecules that capable to slow down or prevent from the oxidation of other molecules. Antioxidants activity are correlated with total phenol, Vitamin C, and anthocyanin content (Purbowati et al, 2018) In order to make it easier to use, the bioactive components in roselle petal must be extracted out of the cell. Conventional extraction techniques such as boiling, heating, and reflux can be used to extract phenolic compounds.…”

Section: Introductionmentioning

confidence: 99%

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Acidity level control formulation of roselle tea functional drinks based on variations in the addition of flower petals and sugar type

Purbowati¹,

Karseno²,

Maksum³

2020

Food Res.

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Roselle (Hibiscus sabdariffa) tea was a phenolic acid and anthocyanin enriched-functional drink. The high antioxidant content of roselle tea benefits to prevent degenerative diseases, such as diabetes. The acidity flavor was due to the high content of phenolic compounds and anthocyanins. This led to the addition of low glycemic index sugar. Therefore, it is necessary to understand the formulation between the variation of flower petals and sugar type’s addition. The purpose of this study was to find out the best effect of petal flowers and sugar type addition towards physical, chemical and sensory quality of roselle tea. The research design used in this study was Complete Randomized trial with 2 (two) factors and 3 replications. The first factor comprises between flower petals addition (R) towards water (w/v) of 1:100 (R1), 4:100 (R2), 7:100 (R3), and 10:100 (R4). The second factor was sugar type (G): cane sugar (G1) which comprises coconut sugar (G2) and corn sugar (G3). Observed variables in this study were physical and chemical variables (color, total phenol, anthocyanin and pH level), and sensory variable (acidity and favorable level). The best combination was R4G1 with characteristics of anthocyanins of 5.25 mg/100 mL; phenol of 24.35 mg/100 mL; pH of 2.6; L amounted to 24.70

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Effects of different drying methods on the proximate composition, antioxidant activity, and phytochemical content of Hibiscus sabdariffa L. Calyx

Akther,

Alim,

Nasrin

et al. 2023

Food Chemistry Advances

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Antioxidant Activity and Isolation Bioactive Compounds From Roselle (Hibiscus Sabdariffa) From Various Methods and Drying Time

Cited by 4 publications

References 3 publications

Chemodiversity and Bioactivity of the Essential Oils of Juniperus and Implication for Taxonomy

Chemodiversity and Bioactivity of the Essential Oils of Juniperus and Implication for Taxonomy

Acidity level control formulation of roselle tea functional drinks based on variations in the addition of flower petals and sugar type

Effects of different drying methods on the proximate composition, antioxidant activity, and phytochemical content of Hibiscus sabdariffa L. Calyx

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