Valorization of lotus byproduct (Receptaculum Nelumbinis) under green extraction condition

Huang, Hao; Belwal, Tarun; Jiang, Lei; Hu, Juwu; Limwachiranon, Jarukitt; Li, Li; Ren, Guoping; Zhang, Xuebing; Luo, Zisheng

doi:10.1016/j.fbp.2019.03.006

Cited by 29 publications

(22 citation statements)

References 36 publications

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“…Among the phenolic compounds, the predominant compound was found to be quercetin 3- O -glucuronide, and a similar result was also reported by Huang et al [ 14 ]. Furthermore, all of the six phenolic compounds have been tentatively identified in LPS extracts by recent detailed investigations [ 14 ]. Interestingly, four compounds, such as catechin, isoquercetin, quercetin 3- O -glucuronide, and kaempferol 3- O -glucuronide were also identified by Yan et al [ 6 ], however, gallocatechin and myricetin 3- O -glucuronide were not reported by Yan et al This is most probably due to the solvents used on the extraction of LPS with different polarity, which also was described by Apostolakis et al with the phenomenon on solvent polarity [ 41 ].…”

Section: Resultssupporting

confidence: 85%

“…Our findings suggested that the optimal concentration of glycerol for TPC extraction from LSP by UAE was 40%. However, previous research demonstrated the optimum concentration of glycerol using a shaking water bath method was 85% [ 14 ]. Generally, prolonging the ultrasonic time could completely rupture the plant cells, assisting to disperse the solvent and dissolve phenolic compounds, subsequently improving the extraction efficiency.…”

Section: Resultsmentioning

confidence: 99%

“…Based on the MS and MS/MS spectral data compared with the data from the literature [ 14 , 41 , 42 ], six phenolic compounds, i.e., gallocatechin, gatechin, myricetin 3- O -glucuronide, isoquercetin, quercetin 3- O -glucuronide, and kaempferol 3- O -glucuronide were identified by UPLC-Triple-TOF/MS from the UG extract at optimum conditions. Among the phenolic compounds, the predominant compound was found to be quercetin 3- O -glucuronide, and a similar result was also reported by Huang et al [ 14 ]. Furthermore, all of the six phenolic compounds have been tentatively identified in LPS extracts by recent detailed investigations [ 14 ].…”

Section: Resultsmentioning

confidence: 99%

“…However, the defects of these organic solvents including potential environmentally hazardous, unacceptable solvent residues in the extracts were increasingly competing with the environmental concern of the public [ 13 ]. Therefore, green solvents, such as glycerol [ 14 ] and polyethylene glycol [ 15 ] were considered as green and cheap alternatives to the traditional harmful organic solvents.…”

Section: Introductionmentioning

confidence: 99%

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Green Extraction of Phenolic Compounds from Lotus Seedpod (Receptaculum Nelumbinis) Assisted by Ultrasound Coupled with Glycerol

Bao

Gao

et al. 2021

Foods

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Lotus Receptaculum Nelumbinis has been sparking wide research interests due to its rich phenolic compounds. In the present work, ultrasonic-assisted extraction coupled with glycerol was employed to extract phenolic compounds from Receptaculum Nelumbinis and the process was optimized using a response surface methodology with Box-Behnken design (BBD). The optimal conditions for the total phenolic content (TPC) extract were obtained: glycerol concentration of 40%, an extraction temperature of 66 °C, ultrasonic time of 44 min, and the solvent-to-solid ratio of 55 mL/g. Under these optimum extraction conditions, the extraction yield of TPC was 92.84 ± 2.13 mg gallic acid equivalents (GAE) /g. Besides, the antioxidant activities demonstrated the ability of free radical scavenging by four different methods that included 2,2-Diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP), 2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and reducing activity (RA) were 459.73 ± 7.07, 529.97 ± 7.30, 907.61 ± 20.28, and 983.66 ± 11.80 μmol TE/g, respectively. Six phenolic compounds were identified by ultra-high pressure liquid chromatography combined with triple-time-of-flight mass spectrophotometry (UPLC-Triple-TOF/MS) from the extracts. Meanwhile, Fourier transform infrared (FTIR) was conducted to identify the characteristic functional groups of the extracts and thus reflected the presence of polyphenols and flavonoids. Scanning electron microscopy (SEM) illustrated the microstructure difference of four treatments, which might explain the relationships between antioxidant activities and the structures of phenolic compounds.

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Section: Resultssupporting

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Green Extraction of Phenolic Compounds from Lotus Seedpod (Receptaculum Nelumbinis) Assisted by Ultrasound Coupled with Glycerol

Bao

Gao

et al. 2021

Foods

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“…From the view of converting food waste into by-products, several kinds of bioactive flavonoid, proanthocyanidin, and phenolic compounds have been extracted and identified from the receptaculum nelumbinis [13,14,15]. As an inedible part of lotus, lotus seed epicarp also has attracted additional attention.…”

Section: Introductionmentioning

confidence: 99%

Separation, Identification, and Antioxidant Activity of Polyphenols from Lotus Seed Epicarp

Huang

Feng

et al. 2019

Molecules

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Lotus seed epicarp, the main by-product of lotus seed processing, is abundant in polyphenols. In this study, polyphenols in lotus seed epicarp were separated by Sephadex LH-20 gel filtration chromatography to yield Fraction-I (F-I), Fraction-II (F-II), and Fraction-III (F-III). The polyphenol compounds in the three fractions were identified by UPLC-MI-TOF-MS. Six kinds of polyphenol compounds including cyanidin-3-O-glucoside, procyanidin trimer, and phlorizin were identified in F-I, and prodelphinidin dimer B, procyanidin dimer, and quercetin hexoside isomer were found in F-II. However, there was only procyanidin dimer identified in F-III. The in vitro antioxidant activities of the three fractions were also investigated. We found F-I, F-II, and F-III had strong potential antioxidant activities in the order of F-III > F-II > F-I. Our results suggested that polyphenols from lotus seed epicarp might be suitable for use as a potential food additive.

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Extraction and identification of steroidal saponins from Polygonatum cyrtonema Hua using natural deep eutectic solvent‐synergistic quartz sand‐assisted extraction method

Liu

Feng

Sui

et al. 2023

J of Separation Science

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In this study, quartz sand with particularly sharp nanoscale edges acted like a nanoscale knife physically cut cells of Polygonatum cyrtonema Hua into nanosized particles and was synergized with natural deep eutectic solvent to extract steroidal saponins of Polygonatum cyrtonema Hua. The natural deep eutectic solvent (choline chloride‐lactic acid)‐synergistic quartz sand‐assisted extraction was optimized using response surface methodology. The steroidal saponins purified with AB‐8 macroporous resin were identified using ultra‐high‐performance liquid chromatography‐triple time of flight mass spectrometry. The results showed that the experimental total saponins content value (36.97 ± 0.12 mg dioscin equivalent/g dry weight) at optimal extraction conditions with a temperature of 68°C, a rotational speed of 20 400 rpm, shear time of 4.3 min, the liquid‐solid ratio of 38 ml/g, was close to the maximum possible theoretical value (36.64 mg dioscin equivalent/g dry weight). A total of 20 steroidal saponins were identified, among which the content of (25R)‐Kingianoside E was the highest (102.66 ± 3.47 mg/g). Furthermore, a new steroid saponin (3β,25S)‐26‐(β‐D‐glucopyranosyloxy)‐22‐hydroxyfurost‐5‐en‐3‐yl 4‐O‐β‐D‐glucopyranosyl‐β‐D‐galactopyranoside+Glc was found for the first time. These results revealed that natural deep eutectic solvent‐synergistic quartz sand‐assisted extraction was an efficient and green method to extract a variety of steroidal saponins.

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Valorization of lotus byproduct (Receptaculum Nelumbinis) under green extraction condition

Cited by 29 publications

References 36 publications

Green Extraction of Phenolic Compounds from Lotus Seedpod (Receptaculum Nelumbinis) Assisted by Ultrasound Coupled with Glycerol

Green Extraction of Phenolic Compounds from Lotus Seedpod (Receptaculum Nelumbinis) Assisted by Ultrasound Coupled with Glycerol

Separation, Identification, and Antioxidant Activity of Polyphenols from Lotus Seed Epicarp

Extraction and identification of steroidal saponins from Polygonatum cyrtonema Hua using natural deep eutectic solvent‐synergistic quartz sand‐assisted extraction method

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