Wood extracts as unique sources of soluble and insoluble-bound phenolics: reducing power, metal chelation and inhibition of oxidation of human LDL-cholesterol and DNA strand scission

Albishi, Tasahil; Banoub, Joseph; Camargo, Adriano Costa de; Shahidi, Fereidoon

doi:10.31665/jfb.2019.8211

Cited by 13 publications

(3 citation statements)

References 30 publications

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“…The remaining water phase was alkalinized using sodium hydroxide (4 M; 1:1 v:v), and a basic hydrolysis reaction was carried out under constant stirring and an inert atmosphere (N 2 ) for 4 h at 23–25 °C to promote the release of soluble esterified phenolic compounds. Subsequently, the mixture was acidified to pH 2 using hydrochloric acid (6 M) and the released compounds were extracted as described for the free phenolic compounds [ 31 , 32 , 33 , 34 , 35 , 36 ]. The free and esterified phenolic fractions were reconstituted in HPLC-grade methanol and stored at −80 °C until further analysis.…”

Section: Methodsmentioning

confidence: 99%

Chickpeas from a Chilean Region Affected by a Climate-Related Catastrophe: Effects of Water Stress on Grain Yield and Flavonoid Composition

et al. 2022

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The Valparaiso region in Chile was decreed a zone affected by catastrophe in 2019 as a consequence of one of the driest seasons of the last 50 years. In this study, three varieties (‘Alfa-INIA’, ‘California-INIA’, and one landrace, ‘Local Navidad’) of kabuli-type chickpea seeds produced in 2018 (control) and 2019 (climate-related catastrophe, hereafter named water stress) were evaluated for their grain yield. Furthermore, the flavonoid profile of both free and esterified phenolic extracts was determined using liquid chromatography-mass spectrometry, and the concentration of the main flavonoid, biochanin A, was determined using liquid chromatography with diode array detection. The grain yield was decreased by up to 25 times in 2019. The concentration of biochanin A was up to 3.2 times higher in samples from the second season (water stress). This study demonstrates that water stress induces biosynthesis of biochanin A. However, positive changes in the biochanin A concentration are overshadowed by negative changes in the grain yield. Therefore, water stress, which may be worsened by climate change in the upcoming years, may jeopardize both the production of chickpeas and the supply of biochanin A, a bioactive compound that can be used to produce dietary supplements and/or nutraceuticals.

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Section: Methodsmentioning

confidence: 99%

Chickpeas from a Chilean Region Affected by a Climate-Related Catastrophe: Effects of Water Stress on Grain Yield and Flavonoid Composition

et al. 2022

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“…Also, Cv leaves may contain insoluble-bound phenolics present in the cell wall plant components. These insoluble-bound form can contribute for to protection of cardiovascular health [ 33 ]. Thus, the use of this plant, either individually or added to other foods, may contribute to a desired increase in fiber intake with the associated health benefits.…”

Section: Resultsmentioning

confidence: 99%

Crepis vesicaria L. subsp. taraxacifolia Leaves: Nutritional Profile, Phenolic Composition and Biological Properties

Pedreiro

Ressurreição

Lopes

et al. 2020

IJERPH

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Crepis vesicaria subsp. taraxacifolia (Cv) of Asteraceae family is used as food and in traditional medicine. However there are no studies on its nutritional value, phenolic composition and biological activities. In the present work, a nutritional analysis of Cv leaves was performed and its phenolic content and biological properties evaluated. The nutritional profile was achieved by gas chromatography (GC). A 70% ethanolic extract was prepared and characterized by HLPC-PDA-ESI/MSn. The quantification of chicoric acid was determined by HPLC-PDA. Subsequently, it was evaluated its antioxidant activity by DPPH, ABTS and FRAP methods. The anti-inflammatory activity and cellular viability was assessed in Raw 264.7 macrophages. On wet weight basis, carbohydrates were the most abundant macronutrients (9.99%), followed by minerals (2.74%) (mainly K, Ca and Na), protein (1.04%) and lipids (0.69%), with a low energetic contribution (175.19 KJ/100 g). The Cv extract is constituted essentially by phenolic acids as caffeic, ferulic and quinic acid derivatives being the major phenolic constituent chicoric acid (130.5 mg/g extract). The extract exhibited antioxidant activity in DPPH, ABTS and FRAP assays and inhibited the nitric oxide (NO) production induced by LPS (IC50 = 0.428 ± 0.007 mg/mL) without cytotoxicity at all concentrations tested. Conclusions: Given the nutritional and phenolic profile and antioxidant and anti-inflammatory properties, Cv could be a promising useful source of functional food ingredients.

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“…The bene cial effects and functional properties of the pollen are well-known and have been mainly attributed to its high content of polyphenols (Leja et al 2007;Rzepecka-Stojko et al 2015). Phenolic compounds, including avonoids and phenolic acids, are recognized as important natural antioxidants; in vivo and in vitro studies support the role of these compounds in preventing DNA damage induced by reactive oxygen species (ROS) (Yonekura et al 2016;Albishi et al 2019). Therefore, other than providing immense bene ts to the diet of honeybees (Stevenson et al 2017), in recent years pollen has also become an important component of animal and human nutrition (Abdelnour et al 2019; Kostić et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Diversity of Plant Pollen Sources, Microbial communities and Phenolic compounds present in Bee pollen and Bee bread

Iorizzo,

Albanese,

Letizia

et al. 2023

Preprint

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The pollination of several crops, as well as wild plants, depends on honeybees. To get the nutrients required for growth and survival, honeybee colonies are dependent on pollen supply. Bee pollen (BP) is partially packed in honeycomb cells, and processed into beebread (BB) by microbial metabolism. The composition of pollen is highly variable and is mainly dependent on ecological habitat, geographical origin, honey plants, climatic conditions, and seasonal variations. Although there are important differences between the BP and the BB, little comparative chemical and microbiological data on this topic exists in the literature, particularly for samples with the same origin. In this study, BP and BB pollen samples were collected from two apiaries located in Campania and Molise regions of southern Italy. Phenolic profiles were detected via HPLC, while antioxidant activity was determined by ABTS assay. The Next Generation Sequencing (NGS) based on RNA analysis of 16S (rRNA), and Internal Transcribed Spacer (ITS2) regions was used to investigate the microbial community (bacteria and fungi) and botanical origin of the BP and BB. Chemical analysis showed a higher content of flavonols in BP (rutin, myricetin, quercetin, and kaempferol), while in BB there was a higher content of phenolic acids. The NGS analysis revealed that the microbial communities and pollen sources are dependent on the geographical location of apiaries. In addition, a diversity was highlighted between the microbial communities present in the BP and BB samples collected from each apiary.

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Wood extracts as unique sources of soluble and insoluble-bound phenolics: reducing power, metal chelation and inhibition of oxidation of human LDL-cholesterol and DNA strand scission

Cited by 13 publications

References 30 publications

Chickpeas from a Chilean Region Affected by a Climate-Related Catastrophe: Effects of Water Stress on Grain Yield and Flavonoid Composition

Chickpeas from a Chilean Region Affected by a Climate-Related Catastrophe: Effects of Water Stress on Grain Yield and Flavonoid Composition

Crepis vesicaria L. subsp. taraxacifolia Leaves: Nutritional Profile, Phenolic Composition and Biological Properties

Diversity of Plant Pollen Sources, Microbial communities and Phenolic compounds present in Bee pollen and Bee bread

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