Bioactive compounds and antioxidant properties of different solvent extracts derived from Thai rice by-products

Wanyo, Pitchaporn; Kaewseejan, Niwat; Meeso, Naret; Siriamornpun, Sirithon

doi:10.1007/s13765-016-0173-8

Cited by 37 publications

(31 citation statements)

References 51 publications

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“…Acetone has been reported to exert a powerful solubilizing effect on tocopherol (Wayno, Kaewseejan & Siriamornpun, 2016), contributing greatly to efficient removal of tocopherol in the process of phospholipid concentration. However, when considering the use of partially purified phosphatidylcholine for production of food grade liposomes, the residual presence of tocopherol in PW2 could provide interesting protection of the unsaturated fatty acid of lipid membrane against oxidation (Carvajal, Rustad, Mozuraityte & Storrø, 2009).…”

Section: Chemical Compositionmentioning

confidence: 99%

Effect of chemical composition and sonication procedure on properties of food-grade soy lecithin liposomes with added glycerol

Taladrid

Marín

Alemán

et al. 2017

Food Research International

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The effect of two-step and five-step acetone washing of soybean lecithin (SL) on compositional properties of partially purified phosphatidylcholines (PW2 and PW5) was studied. Trace amounts of protein were detected in SL, PW2 and PW5, with a predominance of glutamic acid and aspartic acid. Increasing the number of acetone washing steps significantly reduced the total content of γ-, δ- and α-tocopherol. Similar reductions (≈90%) of neutral lipids were found in both PW2 and PW5, but the removal of free fatty acids was higher in PW5 than in PW2 (78% vs. 71%). Linoleic acid was the main constituent in both the neutral lipids and the phospholipid fractions of SL, PW2 and PW5, accounting for around 53-59% of total fatty acids; however, a considerable amount of it was removed by increasing the number of washing steps. All phospholipid classes were mostly concentrated in the first two-step washing of lecithin. Further washing increased the concentration of phosphatidylcholine (PC) in PW5, as compared to PW2. Glycerol-containing liposomes from PW2 and PW5 were produced using two different-intensity sonication procedures (method A: 120W, 5min; method B: 30W, 2min) using a probe-type sonicator (100mL volume suspension). Liposomes of soy lecithin and liposomes of PW5 without glycerol were also obtained by using strong sonication (method A). The liposomal dispersion with the highest purification and the stronger sonication was clearly distinguished from the others, both in particle size and in zeta potential. DSC results showed noticeable interference of glycerol in the membrane structure, but minimal changes in particle size and surface charge.

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Section: Chemical Compositionmentioning

confidence: 99%

Effect of chemical composition and sonication procedure on properties of food-grade soy lecithin liposomes with added glycerol

Taladrid

Marín

Alemán

et al. 2017

Food Research International

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“…In the present study, the sample using only MeOH as extracting medium had the lowest TPC ( P < 0.05) (Table ), indicating that most phenolic compounds in rice bran are relatively polar. Similarly, Wanyo et al . reported that the higher the solvent polarity (acetone < ethanol < water), the greater the TPC contained in the extracts from full fat rice bran (8.96, 10.17 and 11.34 mg gallic acid g −1 dry weight respectively).…”

Section: Resultsmentioning

confidence: 85%

The production of hydrolysates from industrially defatted rice bran and its surface image changes during extraction

et al. 2018

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“…TFC was determined using the colorimetric method described by Wanyo et al 18 In brief, 500 µL of extract was mixed with 2.25 mL of purified water in 10 mL of graduated test tube followed by the addition of 150 µL of a 5% NaNO 2 solution. After standing for 6 min, 300 µL of a 10% AlCl 3 6H 2 O solution was added to the mixture and it was allowed to settle for another 5 min prior to the addition of 1.0 mL of 1 M NaOH.…”

Section: Total Flavonoid Contents (Tfc)mentioning

confidence: 99%

The Diversity of Biologically Active Compounds in the Rhizomes of Recently Discovered Zingiberaceae Plants Native to North Eastern Thailand

Chumroenphat¹,

Somboonwatthanakul²,

Saensouk³

et al. 2019

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Objective: To identify and quantify the bioactive compounds, along with biological activities, of native Thai edible Zingiberaceae. Methods: The bioactive compounds evaluated were phenolic acids, flavonoid, vitamin C, curcumin, 6-gingerol, eugenol and essential amino acids; analyses involved HPLC and LCMS/MS. Antioxidant activities were assessed by DPPH and FRAP assays. Results: Zingiber officinale was the richest source of bioactive compounds, followed by Z. officinale, Alpinia zerumbet and Alpinia conchigera. Total phenolic content and total flavonoid contents ranged widely across these species (17 to 200 mg GAE/100 g DW and 17 to 66 mg RE/100 g DW). All the species studied possessed strong antiglycation properties, ranging from 82 to 98%, with strong positive correlations of total phenolic content and antioxidant activity. The contents of curcumin, 6-gingerol, eugenol and vitamin C were in the range of 1 to 26, 1 to 140 µg/ g DW, 5 to 1600 and 4 to 21 mg/100 g DW, respectively. Seven essential amino acids identified by using LCMS/MS were found in most samples studied ranging from 2 to 6752 µg/100 g DW. Conclusion: Z. officinale is an abundant source of bioactive compounds and antioxidant activity in all these samples. These plants are fresh sources for developing novel functional ingredients in either food or cosmetics.

show abstract

Bioactive compounds and antioxidant properties of different solvent extracts derived from Thai rice by-products

Cited by 37 publications

References 51 publications

Effect of chemical composition and sonication procedure on properties of food-grade soy lecithin liposomes with added glycerol

Effect of chemical composition and sonication procedure on properties of food-grade soy lecithin liposomes with added glycerol

The production of hydrolysates from industrially defatted rice bran and its surface image changes during extraction

The Diversity of Biologically Active Compounds in the Rhizomes of Recently Discovered Zingiberaceae Plants Native to North Eastern Thailand

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