Effects of gamma radiation treatment on three different medicinal plants: Microbial limit test, total phenolic content, in vitro cytotoxicity effect and antioxidant assay

Khawory, Muhammad Hidhir; Sain, Amyra Amat; Rosli, Mohamad Afiq Aizuddin; Ishak, Muhammad Syafiq; Noordin, Mohamed Ibrahim; Wahab, Habibah A.

doi:10.1016/j.apradiso.2019.109013

Cited by 21 publications

(8 citation statements)

References 28 publications

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“…Additionally, doses of 1 and 10 kGy preserve most of the 11 phenolic compounds identified in Aloysia citrodora Palau leaf ( Pereira et al., 2017 ) and increase the levels of phenolic compounds, particularly lithospermic acid in Melissa officinalis L. and 5-O-caffeoylquinic acid in Melittis melissophyllum L. ( Pereira et al., 2018 ). Khawory et al. (2020) also demonstrated that gamma irradiation of 3–13 kGy elevated the total phenolic content and antioxidant capacity of Gnetum gnemon , Euodia malayana , and Khaya senegalensis leaves.…”

Section: Introductionmentioning

confidence: 81%

Effect of gamma irradiation on the caffeoylquinic acid derivatives content, antioxidant activity, and microbial contamination of Pluchea indica leaves

Ernawati

Suryadi

Mun’im

2021

Heliyon

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Pluchea indica (L.) Less. leaf has a long history of being used as a food and in traditional medicines. Although gamma irradiation is an effective decontamination method, it must be performed appropriately to preserve the bioactive constituents and biological activities of the plant. This study investigated the influence of gamma irradiation on the caffeoylquinic acid derivatives content, antioxidant capacity, and microbial burden of P . indica leaf. Dried P . indica leaf powder was exposed to gamma rays from cobalt-60 at the absorbed doses of 2.5, 5.0, 7.5, and 10 kGy. After a maceration of P . indica leaf with 70% ethanol, the content of six caffeoylquinic acid derivatives (CQAs) in the extract was assayed using high-performance liquid chromatography. The antioxidant capacity of the ethanolic extract was also determined using the DPPH, ABTS, and ferric reducing antioxidant power (FRAP) methods. The total aerobic bacteria and total yeast and mold counts were investigated using the Petrifilm method at 0 and 3 months after irradiation. Doses of 5–10 kGy significantly increased the CQA level ( P < 0.05). The antioxidant activity was enhanced significantly at 2.5–10 kGy ( P < 0.05). Doses of 2.5–10 kGy also effectively reduced the microbial load ( P < 0.05). Among the irradiation doses, 10 kGy showed the best results. Thus, gamma irradiation at 10 kGy is useful in increasing CQA content and antioxidant capacity as well as reducing the microbial load of P . indica leaf.

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Section: Introductionmentioning

confidence: 81%

Effect of gamma irradiation on the caffeoylquinic acid derivatives content, antioxidant activity, and microbial contamination of Pluchea indica leaves

Ernawati

Suryadi

Mun’im

2021

Heliyon

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“…Irradiation is the amount of energy required for ionization that is transferred from the radiation source ( 60 Co or 137 Cs) to the food. Its main mechanism of inactivation of microorganisms is damaging the DNA of the cell (Khawory et al., 2020 ). Gamma irradiation was approved in 1983 by the Codex Alimentarius Commission (CAC) for microbiological decontamination of MAPs and is currently used in at least 51 countries up to a maximum dosage of 10 kGy (Khawory et al., 2020 ).…”

Section: Common Methods For Decontaminationmentioning

confidence: 99%

“…Its main mechanism of inactivation of microorganisms is damaging the DNA of the cell (Khawory et al., 2020 ). Gamma irradiation was approved in 1983 by the Codex Alimentarius Commission (CAC) for microbiological decontamination of MAPs and is currently used in at least 51 countries up to a maximum dosage of 10 kGy (Khawory et al., 2020 ). One of the main advantages of gamma irradiation is its effective penetration depth and also its power to decontaminate the internal parts of the product.…”

Section: Common Methods For Decontaminationmentioning

confidence: 99%

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Decontamination technologies for medicinal and aromatic plants: A review

Rahmati

Khoshtaghaza

Banakar

et al. 2022

Food Science & Nutrition

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The use of medicinal and aromatic plants (MAPs) dates back to the ancient Egyptians and today they are used in most countries in the food and pharmaceutical industries. MAPs, due to their active substances such as essential oils, flavonoids, alkaloids, minerals, and nutrients, have therapeutic and nutritional properties with regard to their structure (Barata et al., 2016;Embuscado, 2015;Yilmaz, 2020). These properties are obtained from different parts of the plant, such as leaves, roots, flowers, fruits, and seeds (Saha & Basak, 2020). According to the World Health Organization (WHO), approximately 60% of the world's population rely on these plants

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“…The natural plant products are also used as natural antioxidants to replace the synthetic antioxidants, which have toxic and dangerous effects 25 . It has been suggested that some plants, which have antioxidant activity, could decrease the risk of disease linked to oxidative stress in humans, thanks to the improvement of its antioxidant defence system, inhibition of the production of reactive oxygenated species and also to the redox properties of antioxidants [26][27][28] . There is a large variety of methods to determine this activity (DPPH, FRAP, CUPRAC, ORAC, ABTS, betacarotene, etc.).…”

Section: Introductionmentioning

confidence: 99%

Cistus monspeliensis extract as antioxidant and corrosion inhibitor of ordinary steel in 1 M hydrochloric acid medium

Haida¹,

Bakkouche²,

Ouakki³

et al. 2020

Mediterr.J.Chem.,

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The aim of this study is the valorization of the Cistus monspeliensis plant, native to North of Morocco, as antioxidant and corrosion inhibitor. Firstly, the plant is extracted by maceration in a mixture of water/acetone solvents. Phytochemical tests are carried out on the extract obtained. The antioxidant power of Cistus monspeliensis extract is evaluated by two methods: the test of reduction of the free radical DPPH∙ (1,1-diphenyl-2-picryl hydrazyl) and that of Ferric reducing antioxidant power (FRAP). The electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization are used to study the anticorrosion effect of Cistus monspeliensis extract. The results showed that the extract, 27.6% yield, contains phenolic compounds in the form of flavonoids, hydrolysable and condensed tannins, saponins, reducing sugars and glycosides. This extract has an antioxidant capacity similar to that of ascorbic acid with an inhibition concentration of 0.077 mg/mL 0.102 mg/mL for DPPH and FRAP test, respectively. Tafel plots show that the extract is an excellent cathodic inhibitor. The maximum inhibition efficiency of 92 % was obtained with 0.25 g/L of the inhibitor at 298 k. The impedance plot is characterized by a single capacitive loop attributed to the charge transfer process. The results also showed that the inhibitor acts on the surface of the metal principally by adsorption, leading to the formation of a protective film limiting the corrosion of ordinary steel.

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Effects of gamma radiation treatment on three different medicinal plants: Microbial limit test, total phenolic content, in vitro cytotoxicity effect and antioxidant assay

Cited by 21 publications

References 28 publications

Effect of gamma irradiation on the caffeoylquinic acid derivatives content, antioxidant activity, and microbial contamination of Pluchea indica leaves

Effect of gamma irradiation on the caffeoylquinic acid derivatives content, antioxidant activity, and microbial contamination of Pluchea indica leaves

Decontamination technologies for medicinal and aromatic plants: A review

Cistus monspeliensis extract as antioxidant and corrosion inhibitor of ordinary steel in 1 M hydrochloric acid medium

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