New caffeic acid derivative from Tithonia diversifolia (Hemsl.) A. Gray butanolic extract and its antioxidant activity

Pulido, Kriss Dayana Pantoja; Dulcey, Ana Julia Colmenares; Martínez, José Hipólito Isaza

doi:10.1016/j.fct.2017.03.059

Cited by 37 publications

(15 citation statements)

References 31 publications

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“…Both protocatechuic acid and caffeic acid have carboxyl groups on the benzene ring which can easily chelate metal ions thus inhibiting the activity of enzymes associated with browning reactions. Caffeic acid derivatives not only possess antioxidant activity but also exhibit tyrosinase activity (Pantoja Pulido, Colmenares, Dulcey, & Isaza, ). From previous studies, the protocatechuic acid and caffeic acid may also enhance the antioxidant activity and inhibit the tyrosinase activity (Figure b) in the study; thus the high protocatechuic acid and caffeic acid levels of treated slices may help to preserved the good quality during the storage periods.…”

Section: Resultsmentioning

confidence: 99%

Short‐time water immersion inhibits browning of fresh‐cut potato by enhancing antioxidant capability and tyrosine scavenging

Gong

Wang

et al. 2019

J Food Process Preserv

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Water immersion treatment of potato slices with various time periods (0–30 min) was studied to find out the effect on the browning of fresh‐cut potato slices during long‐term storage (1–12 days) at 5°C. The results show that water immersion for 15 min significantly inhibit browning compared to other time periods of immersion treatment. Further studies show that the levels of superoxide dismutase (SOD), ascorbate peroxidase (APX), glutamic acid, and proline were increased by the 15‐min water immersion treatment, while hydrogen peroxide (H2O2) and superoxide anion (O2ˉ) were lowered; and all these compounds alleviated the oxidation pressure of potato slices. Chlorogenic acid, tyrosine, and tyrosinase activities were lower than those of the controls, which helped decrease the enzymatic browning levels of treated slices. Nevertheless, the browning inhibition has no observable correlation with either total phenols or the peroxidase (POD) activity. Practical applications The research provides a simple anti‐browning method for fresh‐cut potatoes during long‐term storage thus maintaining quality and extending shelf life; and it reports new experimental results detailing the physiological reactions induced by the short‐time water immersion of fresh‐cut potatoes. The physiological studies may promote the understanding of the browning mechanism of fresh‐cut potatoes and provide clues to further efforts in seeking novel strategies for browning inhibition of fresh‐cut potatoes.

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Section: Resultsmentioning

confidence: 99%

Short‐time water immersion inhibits browning of fresh‐cut potato by enhancing antioxidant capability and tyrosine scavenging

Gong

Wang

et al. 2019

J Food Process Preserv

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“…The same role can be attributed to other alkaloids, caffeoylquinic acid, and 1,4-Dicaffeoylquinic acid derivatives, having a well-known antioxidant activity [ 37 ]. Moreover, 1,4-Dicaffeoylquinic acid has significant polarizability of 50.16 Å 3 , which may further facilitate NS synthesis [ 38 ].…”

Section: Discussionmentioning

confidence: 99%

“…Caffeic acid has a low molecular weight of 180.16 g/mol with high solubility of 1.16 mg/mL and a small topological polar surface area of 77.8 Å 2 , which may be the cause of its quicker activation during a reaction conducted in 65 °C [36]. The same role can be attributed to other alkaloids, caffeoylquinic acid, and 1,4-Dicaffeoylquinic acid derivatives, having a well-known antioxidant activity [37]. Moreover, 1,4-Dicaffeoylquinic acid has significant polarizability of 50.16 Å 3 , which may further facilitate NS synthesis [38].…”

Section: Green Chemistry and Synthesis Of Nsmentioning

confidence: 99%

Photodegradation of Biohazardous Dye Brilliant Blue R Using Organometallic Silver Nanoparticles Synthesized through a Green Chemistry Method

Sidorowicz

Szymański

Rybka

2021

Biology

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Nowadays, nanostructures having tremendous chemical and physical properties are gaining attention in the biomedical industry. However, when they are prepared through classical methods (physical and chemical), they are often non-biocompatible and toxic. Considering the mentioned factors, in this research, organometallic silver nanostructures (OMAgNs) have been prepared by the green chemistry method using the acetone, methanol, and methanol-hexane-based extracts of the medicinally important plant Cichorium intybus. Secondary metabolites from C. intybus can be used as an alternative to synthetic reagents at an industrial scale to manufacture biosafe and economical nanostructures with enhanced physicochemical parameters. Prepared nanostructures were characterized using SEM, XRD, FTIR, TGA, UV, and zeta potential measurement. SEM analysis revealed different shapes of OMAgNs, prepared with various extracts. XRD analysis showed the crystallinity of the nanostructures. FTIR spectroscopy helped to identify groups of compounds present in the extracts and used for the OMAgNs synthesis. Out of the three tested OMAgNs, those prepared with methanol extract were selected due to the highest obtained yield and stability (highest negative zeta potential) and were tested as a cost-efficient and active agent to photodegrade organic pollutant, Brilliant Blue R, using energy from sunlight. A decrease in UV-VIS absorbance confirmed the rapid degradation of the dye.

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“…Karena khasiatnya, masyarakat Kalimantan Selatan menyebutnya dengan tanaman "Insulin" yang merujuk pada hormon yang memiliki peran pada kontrol kadar glukosa pada darah. Beberapa penelitian melaporkan tentang aktivitas biologis dari T. diversifolia yaitu antihiperglikemia (Zhao et al, 2012;Yuneldi dkk., 2018;Solfaine dkk., 2019;Rinawati dkk., 2019), biopestisida (Agboola et al, 2016), Larvasida (Wardhana & Diana 2014), insektisida (Pulido et al, 2017), antiinflammatori (Owoyele et al, 2004;Chagas-Paula et al, 2011), antibakteri (Soetjipto dkk., 2008); dan antikanker (Kuroda et al, 2007). Ekstrak metanol dari akar titonia mengandung sesquiterpena lakton yaitu tagitinin C yang memiliki aktivitas antimalaria dengan IC50 0,706 mikrogram/mL (Goffin et al, 2002).…”

Section: Pendahuluanunclassified

Komposisi Kimia Penyusun Minyak Atsiri Daun Insulin (Tithonia diversifolia (Hamsley) A.Gray) dari Kalimantan Selatan

Fauzi’ah

Hajati²

2020

juses

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Daun Insulin (Tithonia diversifolia) merupakan salah satu tanaman obat tradisional yang digunakan masyarakat Kalimantan Selatan untuk mengatasi glikemia. Analisis komposisi Kimia penyusun minyak atsiri dari daun Insulin yang berasal dari Kalimantan Selatan belum dilakukan. Oleh karena itu, penelitian ini bertujuan untuk menentukan komponen kimia penyusun minyak atsiri Daun Insulin (T. diversifolia) untuk melengkapi data dasar daun Insulin yang diperoleh dari Kalimantan Selatan. Sampel daun Insulin diperoleh tumbuh liar dari Desa Hulu Pasar, Kabupaten Hulu Sungai Utara Kalimantan Selatan, Indonesia. Sebelum didistilasi, daun dikeringanginkan kemudian dikeringkan dengan oven pada suhu 50 ᵒC selama 30 menit. Metode distilasi rebus digunakan untuk mendapatkan minyak atsiri daun Insulin. Sampel didistilasi selama 48 jam sehingga diperoleh minyak bening berwarna kekuningan dengan rendemen minyak 0,02% (b/b). Minyak hasil distilasi selanjutnya dianalisis dengan Kromatografi Gas-Spektra Masa (KG-SM). Hasil kromatogram minyak atsiri daun Insulin menunjukkan adanya 6 puncak yang teridentifikasi melalui spektra massa merupakan senyawa limonen (32,14%), β pinen (24,88%), α pinen (21,73%), trans kariofilen (11,68%), bisiklogermakren (5,24%), dan β felandren (4,33%). Komponen kimia penyusun minyak atsiri daun Insulin termasuk dalam golongan monoterpena dan seskuiterpena hidrokarbon.

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New caffeic acid derivative from Tithonia diversifolia (Hemsl.) A. Gray butanolic extract and its antioxidant activity

Cited by 37 publications

References 31 publications

Short‐time water immersion inhibits browning of fresh‐cut potato by enhancing antioxidant capability and tyrosine scavenging

Short‐time water immersion inhibits browning of fresh‐cut potato by enhancing antioxidant capability and tyrosine scavenging

Photodegradation of Biohazardous Dye Brilliant Blue R Using Organometallic Silver Nanoparticles Synthesized through a Green Chemistry Method

Komposisi Kimia Penyusun Minyak Atsiri Daun Insulin (Tithonia diversifolia (Hamsley) A.Gray) dari Kalimantan Selatan

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