Chemical properties and bioactivities of Goji (Lycium barbarum) polysaccharides extracted by different methods

Yang, Ri Fu; Zhao, Chunjiang; Xia, Chen; Chan, Shun‐Wan; Wu, Jianyong

doi:10.1016/j.jff.2015.06.045

Cited by 99 publications

(44 citation statements)

References 20 publications

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“…Just recently, many researchers conducted experimental work to establish a novel application of UAE of goji berry polysaccharides using enzymes or alternatively other scientific groups experimented with subcritical water extraction of L. barbarum Polysaccharides (Yang et al, 2015). Both of the above mentioned studies showed a significantly increased extraction yield of LBPs in the case of UAE.…”

mentioning

confidence: 99%

Optimization of ultrasound assisted extraction of of goji berry (Lycium barbarum) fruits and evaluation of extracts' bioactivity

Skenderidis

Petrotos

Giavasis

et al. 2016

J Food Process Engineering

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Popularity of goji berry fruit extracts as functional ingredients is growing rapidly. “Green” aqueous extraction technologies are preferable to organic solvent‐based processes as they improve the bioactivity and added value of these extracts. This work aimed at optimizing the ultrasound assisted aqueous extraction (UAE) of Lycium barbarum for both locally produced and imported fruits and comparing the bioactivity in relation to extraction conditions and origin of fruits, using a response surface model. The optimal solvent/extracted material ratio, extraction temperature, ultrasonic power, and extraction time were determined to achieve the following optimal quality/bioactivity indices: total solids, carbohydrates, phenolics, and antioxidant capacity based on IC‐50 values of the DPPH method. Fruits of different origin had mostly similar optimal extraction conditions and antioxidant capacity but differed significantly in carbohydrate content, which was higher for locally produced fruits (1.1 ± 0.17 g/L extract) compared to imported ones (0.89 ± 0.19 g/L extract). Practical applications In this study, the UAE process for goji berry extracts was successfully optimized using response surface methodology, and the most preferable conditions for optimal extraction performance and optimal bioactivity were determined. With regard to extraction yield, the optimal water/raw material ratio (33.9%), extraction temperature (32.02°C), ultrasonic power (30.95 w/cm2), and extraction time (32.03 min) were determined. Under optimal extraction conditions, locally produced fruits had no significant difference in extraction yield, and antioxidant capacity (IC50 values) compared to imported ones. However, locally produced fruits had significantly higher carbohydrate content and somewhat lower polyphenol content under optimal UAE conditions, showing that fruit origin may affect the composition of fruit extracts. These findings are a useful tool for producers of goji berry extracts to achieve an effective and economically viable extraction process as well as optimal composition and bioactivity in terms of antioxidant capacity, which are indeed important traits of these fruit extracts.

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mentioning

confidence: 99%

Optimization of ultrasound assisted extraction of of goji berry (Lycium barbarum) fruits and evaluation of extracts' bioactivity

Skenderidis

Petrotos

Giavasis

et al. 2016

J Food Process Engineering

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show abstract

“…The RSA of the yoghurt formulations supplemented with aqueous and ethanolic gojiberry extract was determined by 1,1-diphenyl-2-picrylhydrazyl (DPPH) method by measuring absorbance at 517 nm in double beam spectrophotometer (Shimadzu UV-2600, Japan) (Yang et al, 2015).…”

Section: Reactive Oxygen Scavenging Activity (Rsa) Estimationmentioning

confidence: 99%

“…Fortification of vitamin D in food matrix also brings limitation within it, which is degradation of vitamin D in target food (Tangpricha et al, 2003;Wagner et al, 2008). one of the well reported berry rich in diverse groups of phytochemicals (Benchennouf et al, 2017;Chen et al, 2014;Vulić et al, 2016;Yang et al, 2015;Zhang, 2013;Zhang et al, 2016). Recent literature suggests that addition of natural fruits extract, rich in phenolic contents, offers high antioxidative properties as well as various other health benefits (Cossu et al, 2009;El-Said et al, 2014;Karaaslan et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Impact of Aqueous/Ethanolic Goji Berry (Lycium barbarum) Fruit Extract Supplementation on Vitamin D Stability in Yoghurt

Maurya¹,

Aggarwal²

2017

Int.J.Curr.Microbiol.App.Sci

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“…[1][2][3][4][5][6] Goji berry is involved in various biological activities, including anti-oxidation, anti-aging, anti-tumour, and immune system enhancement. [7] Goji berry is mainly produced in Ningxia, Gansu, Qinghai, and other western regions of China.…”

Section: Introductionmentioning

confidence: 99%

A novel method to determine total sugar of Goji berry using FT-NIR spectroscopy with effective wavelength selection

Gao

2017

International Journal of Food Properties

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This study investigated the feasibility of determining the content of Goji berry total sugar (GBTS) through Fourier transform near-infrared (FT-NIR) spectroscopy combined with chemometrics. A total of 114 Goji berry samples from different regions in China were scanned with a FT-NIR reflectance spectroscopic system. X-loading weights and correlation coefficients were utilised to identify the most influential wavelength after the selection of spectra processing methods. Partial least squares regression was applied to build models, and paired t test was used for external validation. The model with raw spectra after pre-treatment with Norris gap derivatives and effective wavelength of 8700-4000 cm −1 , which were determined by the correlation coefficients, exhibited the best predicative ability. In addition, the determination coefficients (R 2 ) of calibration validation set were both greater than 0.9 when principal component number was 6. The model presents good performance, with root mean square errors (RMSE) of 0.406 and 0.695 for the prediction of calibration validation set, relatively. The use of FT-NIR spectroscopy to implement quick determination of GBTS is thus feasible. ARTICLE HISTORY

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Chemical properties and bioactivities of Goji (Lycium barbarum) polysaccharides extracted by different methods

Cited by 99 publications

References 20 publications

Optimization of ultrasound assisted extraction of of goji berry (Lycium barbarum) fruits and evaluation of extracts' bioactivity

Optimization of ultrasound assisted extraction of of goji berry (Lycium barbarum) fruits and evaluation of extracts' bioactivity

Impact of Aqueous/Ethanolic Goji Berry (Lycium barbarum) Fruit Extract Supplementation on Vitamin D Stability in Yoghurt

A novel method to determine total sugar of Goji berry using FT-NIR spectroscopy with effective wavelength selection

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