scholarly journals Nutritional Value and Biofunctionalities of Two Edible Green Seaweeds (Ulva lactuca and Caulerpa racemosa) from Indonesia by Subcritical Water Hydrolysis

Marine Drugs ◽  
2021 ◽  
Vol 19 (10) ◽  
pp. 578
Author(s):  
Ratih Pangestuti ◽  
Monjurul Haq ◽  
Puji Rahmadi ◽  
Byung-Soo Chun
Keyword(s):  
Bioactive Compounds ◽  
Subcritical Water ◽  
Antioxidant Activities ◽  
Ulva Lactuca ◽  
Hot Water ◽  
Water Extraction ◽  
Raw 264.7 Cells ◽  
Total Phenolic ◽  
Subcritical Water Extraction ◽  
Caulerpa Racemosa

Caulerpa racemosa (sea grapes) and Ulva lactuca (sea lettuces) are edible green seaweeds and good sources of bioactive compounds for future foods, nutraceuticals and cosmeceutical industries. In the present study, we determined nutritional values and investigated the recovery of bioactive compounds from C. racemosa and U. lactuca using hot water extraction (HWE) and subcritical water extraction (SWE) at different extraction temperatures (110 to 230 ºC). Besides significantly higher extraction yield, SWE processes also give higher protein, sugar, total phenolic (TPC), saponin (TSC), flavonoid contents (TFC) and antioxidant activities as compared to the conventional HWE process. When SWE process was applied, the highest TPC, TSC and TFC values were obtained from U. lactuca hydrolyzed at reaction temperature 230 ºC with the value of 39.82 ± 0.32 GAE mg/g, 13.22 ± 0.33 DE mg/g and 6.5 ± 0.47 QE mg/g, respectively. In addition, it also showed the highest antioxidant activity with values of 5.45 ± 0.11 ascorbic acid equivalents (AAE) mg/g and 8.03 ± 0.06 trolox equivalents (TE) mg/g for ABTS and total antioxidant, respectively. The highest phenolic acids in U. lactuca were gallic acid and vanillic acid. Cytotoxic assays demonstrated that C. racemosa and U. lactuca hydrolysates obtained by HWE and SWE did not show any toxic effect on RAW 264.7 cells at tested concentrations after 24 h and 48 h of treatment (p < 0.05), suggesting that both hydrolysates were safe and non-toxic for application in foods, cosmeceuticals and nutraceuticals products. In addition, the results of this study demonstrated the potential of SWE for the production of high-quality seaweed hydrolysates. Collectively, this study shows the potential of under-exploited tropical green seaweed resources as potential antioxidants in nutraceutical and cosmeceutical products.

Antioxidant activities of onion (Allium cepa L.) peel extracts produced by ethanol, hot water, and subcritical water extraction

2014 ◽  
Vol 23 (2) ◽  
pp. 615-621 ◽  
Author(s):  
Kyoung Ah Lee ◽  
Kee-Tae Kim ◽  
Hyun Jung Kim ◽  
Myong-Soo Chung ◽  
Pahn-Shick Chang ◽  
...  
Keyword(s):  
Allium Cepa ◽  
Subcritical Water ◽  
Antioxidant Activities ◽  
Hot Water ◽  
Water Extraction ◽  
Subcritical Water Extraction ◽  
Allium Cepa L

scholarly journals Optimization of Subcritical Water Extraction of Polysaccharides from Inonotus Obliquus and their Antioxidant Activities

2017 ◽  
Vol 9 (3) ◽  
pp. 38 ◽  
Author(s):  
Xi Yuan ◽  
Ling Li ◽  
Hongyi Sun ◽  
Shuang Sun ◽  
Zhenya Zhang
Keyword(s):  
Subcritical Water ◽  
Antioxidant Activities ◽  
Hot Water ◽  
Water Extraction ◽  
Extraction Temperature ◽  
Subcritical Water Extraction ◽  
Inonotus Obliquus ◽  
Solid Ratio ◽  
Ft Ir

Subcritical water extraction (SWE) of Inonotus Obliquus polysaccharides (IOP) was investigated using response surface methodology (RSM) with a design by Box–Behnken design (BBD). Results showed that the optimum SWE conditions for IOP production were as follows: extraction temperature 194°C, residence time 5.36 min and liquid-solid ratio 53 mL/g, yielding 168.80 ± 0.59 mg/g of IOP, which was in close agreement with the values predicted by the mathematical model. FT-IR spectra of the polysaccharides extracted by SWE and hot water extraction (HWE) were compared as well. Moreover, in vitro antioxidant assays revealed that SWE-IOP exhibited stronger scavenging activity that HWE-IOP. This investigation suggests that polysaccharides of Inonotus Obliquus extracted by SWE could be further developed as a potential antioxidant resource for dietary supplements of functional food.

scholarly journals Subcritical water extraction as an environmentally-friendly technique to recover bioactive compounds from traditional Serbian medicinal plants

2018 ◽  
Vol 111 ◽  
pp. 579-589 ◽  
Author(s):  
Nataša Nastić ◽  
Jaroslava Švarc-Gajić ◽  
Cristina Delerue-Matos ◽  
M. Fátima Barroso ◽  
Cristina Soares ◽  
...  
Keyword(s):  
Medicinal Plants ◽  
Bioactive Compounds ◽  
Subcritical Water ◽  
Environmentally Friendly ◽  
Water Extraction ◽  
Subcritical Water Extraction

scholarly journals Thermal Processing Effects on the Chemical Constituent and Antioxidant Activity of Okara Extracts Using Subcritical Water Extraction

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Hongyi Sun ◽  
Xi Yuan ◽  
Zhenya Zhang ◽  
Xin Su ◽  
Min Shi
Keyword(s):  
Antioxidant Activity ◽  
Thermal Processing ◽  
Subcritical Water ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Water Extraction ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Flavonoid Content ◽  
Subcritical Water Extraction

Subcritical water extraction (SWE) has been employed for the extraction of bioactive compounds from plant materials with cost-effectiveness, less consuming time, and environmental sustainability. To explore the effects of thermal processing during SWE, total organic content (TOC), total sugar, polysaccharides, total phenolic content (TPC), total flavonoid content (TFC), and antioxidant activity (ABTS and DPPH assays) of eight aqueous extracts have been quantitatively investigated. The results indicated that elevated temperatures indeed resulted in significant changes in the constituents and antioxidant activities of okara extracts. Among them, the extract obtained at 220°C exhibited the highest total phenolic, flavonoid content, DPPH (2,2-diphenyl-1-picrylhydrazyl) radical-scavenging activity, and ABTS [2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonate)] radical-scavenging activity. However, phenolic compounds were destroyed after the treatment above 230°C, suggesting that any polymer processing is improper to undertake at higher than this value to achieve the high antioxidant activity. Moreover, a significant positive correlation between TPC or TFC and antioxidant capacity (DPPH and ABTS) values was detected.

scholarly journals Bioactive compounds of sweet and sour cherry stems obtained by subcritical water extraction

2018 ◽  
Vol 93 (6) ◽  
pp. 1627-1635 ◽  
Author(s):  
Jaroslava Švarc-Gajić ◽  
Víctor Cerdà ◽  
Sabrina Clavijo ◽  
Ruth Suárez ◽  
Pavle Mašković ◽  
...  
Keyword(s):  
Bioactive Compounds ◽  
Subcritical Water ◽  
Sour Cherry ◽  
Water Extraction ◽  
Subcritical Water Extraction

Effect of wall materials on the spray drying encapsulation of brown seaweed bioactive compounds obtained by subcritical water extraction

2021 ◽  
Vol 58 ◽  
pp. 102381
Author(s):  
David Nkurunziza ◽  
Saravana Periaswamy Sivagnanam ◽  
Jin-Seok Park ◽  
Yeon-Jin Cho ◽  
Byung Soo Chun
Keyword(s):  
Spray Drying ◽  
Bioactive Compounds ◽  
Subcritical Water ◽  
Brown Seaweed ◽  
Water Extraction ◽  
Subcritical Water Extraction ◽  
Wall Materials
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