Customized drying treatments increased the extraction of phytochemicals and antioxidant activity from economically viable medicinal plants

Ng, Zhi Xiang; Yong, Phaik Har; Lim, Sin Yee

doi:10.1016/j.indcrop.2020.112815

Cited by 45 publications

(23 citation statements)

References 35 publications

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“…Values followed by the same lowercase letters in the same row are not significantly different (p > 0.05). (53). Additionally, the difference in phytochemicals could cause different reactions with DPPH and FRAP under different drying methods, which may contribute to this finding (54).…”

Section: Effect Of Drying Methods On Antioxidant Activity Of Lrfmentioning

confidence: 90%

Composition Changes in Lycium ruthenicum Fruit Dried by Different Methods

Kong

Zhang

et al. 2021

Front. Nutr.

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The fruit of Lycium ruthenicum (LRF), known as black wolfberry, is a medicinal and edible fruit. The fresh LRF is perishable and has only about 3 days of shelf life. Drying could prolong the shelf life of LRF. However, it could imply physical changes and chemical modification. This study evaluated the effect of sun drying (SD), hot air drying (HD), and freeze drying (FD) on the appearance characteristics, moisture content, bioactive compounds, amino acid composition, and antioxidant activity of LRF. The results showed that LRF dried by FD was round, expansive, fragile, and maintained the largest amount of appearance traits among the three drying methods. Drying methods had a significant effect on phytochemical content and antioxidant activity of LRF (P < 0.05). Principal component analysis (PCA) showed that procyanidin content (PAC), asparagine (Asn), total phenolic content (TPC), total anthocyanin content (TAC), and moisture content were the main sources of the difference in LRF dried by different methods. The characteristic of LRF in FD was low moisture content, and high TPC, Asn, PAC, and TAC. Sun drying was opposite to FD. Hot air drying was high TPC and low TAC content. The quality of LRF was in the order of FD > HD > SD based on comprehensive evaluation of the phytochemical component content and antioxidant capacity. Additionally, the water temperature and soaking time had different antioxidant activity effect on LRF dried by different methods. These findings will provide useful information for production and utilization of LRF.

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Section: Effect Of Drying Methods On Antioxidant Activity Of Lrfmentioning

confidence: 90%

Composition Changes in Lycium ruthenicum Fruit Dried by Different Methods

Kong

Zhang

et al. 2021

Front. Nutr.

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“…It has been described previously that drying and freezing parameters have a significant influence on the nutritional value of natural materials. 23 In vitro-simulated gastrointestinal digestion The homogenized fruiting bodies (fresh and thawed -2.5 g, dried -0.5 g) were placed in the flasks. The material was initially moistened with 3 mL of artificial saliva solution prepared according to Arvidsonʼs model.…”

Section: Sample Preparationmentioning

confidence: 99%

Effect of conservation methods on the bioaccessibility of bioelements from in vitro‐digested edible mushrooms

et al. 2020

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BACKGROUND: The release of bioelements from edible mushrooms (Agaricus bisporus, Cantharellus cibarius, and Imleria badia) was examined using in vitro simulated gastrointestinal digestion to assess their health-promoting potential. The following samples were tested: fresh, frozen, dried in a food dryer, dried in the sun, and lyophilized. The samples were incubated in gastric juice (pepsin, NaCl, HCl) and in intestinal juice (NaHCO 3 , pancreatin, bile salts) with the aim of verifying the bioaccessibility of the bioelements and the digestibility of mushrooms. Four bioelements that are essential for the human body were studied: Mg, Zn, Cu, and Fe. RESULTS: It was found that Mg was extracted in the highest amounts from the sun-dried A. bisporus (1.620 g kg −1 d.w.). In the case of microelements, the lyophilized fruiting bodies of I. badia released Zn in the highest quantities (0.180 g kg −1 d.w.). Lyophilization and sun-drying methods were more advantageous than other methods. Fresh material was a more valuable source of bioelements than frozen material. CONCLUSION: Our results showed that edible mushrooms have a high content of bioelements that are easily bioaccessible, which indicates their health-promoting properties.

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“…can be used as critical functional compounds in the treatment of many metabolic diseases (Ng et al, 2012). Since plants have low cost and are sustainable sources of phytochemicals, it is of great importance to use those with proven biological/pharmacological activities for industrial use as an alternative to synthetic compounds (Samy et al, 2005;Ng et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Phenolic profile, antioxidant and enzyme inhibitory activity of the ethyl acetate, methanol and water extracts of Capparis spinosa L.

Kırkan

Ceylan

Sarıkürkçü

et al. 2021

International Journal of Secondary Metabolite

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In this study, it was aimed to determine the phytochemical compositions and biological activities of ethyl acetate (EtOAc), methanol (MeOH) and water extracts obtained from the aerial parts of Capparis spinosa L. As a result of spectrophotometric analyzes, MeOH extract was found to be richer in terms of both phenolics and flavonoids compared to other extracts [81.45 mg GAEs (gallic acid equivalent)/g and 36.57 mg RE (rutin equivalent)s/g, respectively], while chromatographic analyzes showed that the extract in question contains a significant amount of hepseridin (72927.48 µg/g), quercetin (1335.88 µg/g), hyperoside (1227.73 µg/g), and 4-hydroxybenzoic acid (924.08 µg/g). Phosphomolybdenum, 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2-azinobis-(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical scavenging, Cupric Reducing Antioxidant Power (CUPRAC) and Ferric Reducing Antioxidant Power (FRAP) reducing and ferrous ion chelating activity tests resulted in superiority of MeOH extract [371.0, 44.93, 56.46, 91.77, 52.61 mg TEs (trolox equivalent)/g and 14.85 mg EDTAEs/g, respectively]. On the other hand, EtOAc extract exhibited higher activity than other extracts in acetylcholinesterase (AChE), butyrylcholinesterase (BChE), α-amylase, and α-glucosidase inhibitory activity tests [3.29, 2.12 mg GALAEs (galanthamine equivalent)/g, 541.01 and 1584.20 mg ACEs (acarbose equivalent)/g, respectively]. The tyrosinase inhibitory activity test resulted in the superiority of MeOH extract [41.90 mg KAEs (kojic acid equivalent)/g]. A strong correlation was determined between the phenolic and flavonoid contents of the extracts and their antioxidant activities.

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Customized drying treatments increased the extraction of phytochemicals and antioxidant activity from economically viable medicinal plants

Cited by 45 publications

References 35 publications

Composition Changes in Lycium ruthenicum Fruit Dried by Different Methods

Composition Changes in Lycium ruthenicum Fruit Dried by Different Methods

Effect of conservation methods on the bioaccessibility of bioelements from in vitro‐digested edible mushrooms

Phenolic profile, antioxidant and enzyme inhibitory activity of the ethyl acetate, methanol and water extracts of Capparis spinosa L.

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