Effects of drying processes on antioxidant properties and chemical constituents of four tropical macroalgae suitable as functional bioproducts

Amorim, Ana Maria Pereira Barreto; Nardelli, Allyson E.; Chow, Fungyi

doi:10.1007/s10811-020-02059-7

Cited by 18 publications

(6 citation statements)

References 45 publications

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“…Water extracts of all samples grouped on the upper right side, while water-ethanol mixture extracts of oven-dried and shadedried samples remained in the lower part of the graph. Amorim et al [13] investigated the effect of freeze-drying, oven-drying, and silica-drying on the antioxidant properties of four Brazilian macroalgae (Gracilariopsis tenuifrons, Pterocladiella capillacea, Sargassum stenophyllum, and Ulva fasciata) and showed that freeze-drying had the lowest alteration of antioxidant potential in tested algae. However, Ling et al [12] studied the effect of different drying methods (oven-drying, sun-drying, hang-drying, sauna-drying, shade-drying, and freeze-drying) on the phytochemical content and antioxidant activity of red macroalgae Kappaphycus alvarezii.…”

Section: Antioxidant Activitymentioning

confidence: 99%

“…It has been shown that many parameters, such as temperature, drying time, and UVA-UVB light affect the phytochemical content and antioxidant potential of algae [12]. As low temperature prevents the degradation of heat-sensitive compounds, freeze-drying, a method that is performed under vacuum, has been suggested to prevent the oxidation reactions of functional ingredients [13]. The selection of the best drying method for marine macroalgae remains to be confirmed.…”

Section: Introductionmentioning

confidence: 99%

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Maximizing the Antioxidant Capacity of Padina pavonica by Choosing the Right Drying and Extraction Methods

et al. 2021

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Marine algae are becoming an interesting source of biologically active compounds with a promising application as nutraceuticals, functional food ingredients, and therapeutic agents. The effect of drying (freeze-drying, oven-drying, and shade-drying) and extraction methods (shaking at room temperature, shaking in an incubator at 60 °C, ultrasound-assisted extraction (UAE), and microwave-assisted extraction (MAE)) on the total phenolics content (TPC), total flavonoids content (TFC), and total tannins content (TTC), as well as antioxidant capacity of the water/ethanol extracts from Padina pavonica were investigated. The TPC, TFC, and TTC values of P. pavonica were in the range from 0.44 ± 0.03 to 4.32 ± 0.15 gallic acid equivalents in mg/g (mg GAE/g) dry algae, from 0.31 ± 0.01 to 2.87 ± 0.01 mg QE/g dry algae, and from 0.32 ± 0.02 to 10.41 ± 0.62 mg CE/g dry algae, respectively. The highest TPC was found in the freeze-dried sample in 50% ethanol, extracted by MAE (200 W, 60 °C, and 5 min). In all cases, freeze-dried samples extracted with ethanol (both 50% and 70%) had the higher antioxidant activity, while MAE as a green option reduces the extraction time without the loss of antioxidant activity in P. pavonica.

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Section: Antioxidant Activitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Maximizing the Antioxidant Capacity of Padina pavonica by Choosing the Right Drying and Extraction Methods

et al. 2021

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“…In this sense, higher concentrations of chl a and chl b in freeze-dried extracts than in fresh frozen extracts of mint leaves were found (Rubinskiene et al, 2015 ). However, the opposite was also observed in extracts of algae (Amorim et al, 2020 ). Also, our result confirmed that the effect of freeze-drying on the extraction yield is species-specific and depends on the leaf structure and composition.…”

Section: Resultsmentioning

confidence: 91%

Characterization of complex photosynthetic pigment profiles in European deciduous tree leaves by sequential extraction and reversed-phase high-performance liquid chromatography

Petibon

Wiesenberg

2022

Front. Plant Sci.

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Leaf pigments, including chlorophylls and carotenoids, are important biochemical indicators of plant photosynthesis and photoprotection. In this study, we developed, optimized, and validated a sequential extraction and liquid chromatography-diode array detection method allowing for the simultaneous quantification of the main photosynthetic pigments, including chlorophyll a, chlorophyll b, β-carotene, lutein, neoxanthin, and the xanthophyll cycle (VAZ), as well as the characterization of plant pigment derivatives. Chromatographic separation was accomplished with the newest generation of core–shell columns revealing numerous pigment derivatives. The sequential extraction allowed for a better recovery of the main pigments (+25 % chlorophyll a, +30 % chlorophyll b, +42 % β-carotene, and 61% xanthophylls), and the characterization of ca. 5.3 times more pigment derivatives (i.e., up to 62 chlorophyll and carotenoid derivatives including isomers) than with a single-step extraction. A broad working range of concentrations (300–2,000 ng.mL−1) was achieved for most pigments and their derivatives and the limit of detection was as low as a few nanograms per milliliter. The method also showed adequate trueness (RSD < 1%) and intermediate precision (RSD < 5%). The method was developed and validated with spinach leaves and their extracts. The method was successfully performed on leaf pigment extracts of European deciduous tree species. Within a case study using Fagus sylvatica L. leaves, pigment derivatives revealed a high within-individual tree variability throughout the growing season that could not be detected using the main photosynthetic pigments alone, eventually showing that the method allowed for the monitoring of pigment dynamics at unprecedented detail.

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“…Loho et al (2021) menyebutkan bahwa penggunaan metode ekstraksi dan jenis pelarut yang berbeda akan menghasilkan aktivitas antioksidan yang berbeda antara jenis rumput laut. Proses pengeringan rumput laut dapat memengaruhi kadar komponen bioaktif sehingga dapat menurunkan aktivitas antioksidan (Lantah et al, 2017;Amorim et al, 2020).…”

Section: Aktivitas Antioksidanunclassified

Aktivitas antioksidan dan total fenol rumput laut Sargassum sp. dari Perairan Simeulue Aceh

Erniati,

Syahrial,

Erlangga

et al. 2024

JPHPI

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Sargassum sp merupakan jenis rumput laut yang tumbuh subur secara alami di perairan Indonesia, termasuk di Perairan Simeulue, Provinsi Aceh. Sargassum sp. mengandung berbagai senyawa bioaktif yaitu fenol yang berpotensi sebagai antioksidan. Sargassum sp. di Perairan Simeulue belum dimanfaatkan oleh masyarakat setempat dan belum ada laporan ilmiah tentang total fenol dan aktivitas antioksidan dari rumput laut tersebut. Tujuan penelitian ini menentukan aktivitas antioksidan dan total fenol Sargassum sp yang terdapat di Perairan Simeulue. Metode penelitian meliputi pengambilan sampel rumput laut, preparasi dan ekstraksi sampel rumput laut, uji fitokimia, analisis total fenol dan analisis aktivitas antioksidan rumput laut. Analisis data menggunakan analisis regresi linear untuk melihat hubungan total fenol dengan aktivitas antioksidan DPPH Sargassum. Hasil penelitian menunjukkan bahwa total fenol dan aktivitas antioksidan lima jenis rumput laut genus Sargassum (S. muticum, S. binderi, S. crassifolium, S. granuliferum, S. fluitans) di Perairan Simeulue menunjukkan nilai yang bervariasi. Total fenol 7,45-9,02 mg GAE/g dengan nilai tertinggi terdapat pada S. binderi dan nilai terendah pada S. fluitans. Aktivitas antioksidan 74,7-152,4 μg/mL dengan nilai tertinggi terdapat pada S. binderi, sedangkan nilai terendah terdapat pada S. fluitans. Hasil analisis korelasi (R2 = 0,9059) menunjukkan bahwa aktivitas antioksidan rumput laut genus Sargassum berhubungan erat dengan total fenol. Kelima spesies rumput laut Sargassum di Perairan Simeulue mempunyai aktivitas antioksidan yang kuat (74,7-152,4 μg/mL) sehingga berpotensi dikembangkan sebagai antioksidan.

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Effects of drying processes on antioxidant properties and chemical constituents of four tropical macroalgae suitable as functional bioproducts

Cited by 18 publications

References 45 publications

Maximizing the Antioxidant Capacity of Padina pavonica by Choosing the Right Drying and Extraction Methods

Maximizing the Antioxidant Capacity of Padina pavonica by Choosing the Right Drying and Extraction Methods

Characterization of complex photosynthetic pigment profiles in European deciduous tree leaves by sequential extraction and reversed-phase high-performance liquid chromatography

Aktivitas antioksidan dan total fenol rumput laut Sargassum sp. dari Perairan Simeulue Aceh

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