Edible flowers as a new source of natural antioxidants for oxidative protection of cold-pressed oils rich in omega-3 fatty acids

Mikołajczak, Natalia; Sobiechowska, Daria Anna; Tańska, Małgorzata

doi:10.1016/j.foodres.2020.109216

Cited by 37 publications

(20 citation statements)

References 40 publications

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“…The amount of TPC varied in the studied marigold flower extracts, ranging from 29.85 to 62.51 mg GAE/g extract. Many studies reported that TPC varied considerably in marigold cultivars [45,48] and among edible flowers [49]. The results obtained in this study are comparable with those reported by Ingkasupart et al and elicković et al [49,50].…”

Section: Methods Applicabilitysupporting

confidence: 91%

“…Phenolic compounds are commonly found in plants and they have been reported to have multiple biological effects, including antioxidant activity. Phenolic contents such as phenolic acids and anthocyanins contributed towards the strong antioxidant capacities of marigold flowers [48]. The phytochemical composition of edible flowers, with the common name marigold, revealed them to be wonderful natural gifts containing many therapeutic values [8].…”

Section: Methods Applicabilitymentioning

confidence: 99%

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Determination of Total Phenolic Content From Plant Extracts Used in Cosmetic Purpose

Dobrinaș

Soceanu

2021

J. Sci. Arts

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Spectrometric analysis belongs to a group of measurement methods used for their simplicity and large selectivity to solve various problems of analytes. The total phenolic content of different plant extracts used for cosmetic purpose was determined by a slightly modified version of traditionally Folin-Ciocalteau method. The objective of this work was the validation of UV-Vis spectrometric method, investigation of uncertainty sources when measuring gallic acid concentration and evaluation of the calibration equation effect on measurement uncertainty of UV– Vis spectrophotometer. Validation was performed by studying analytical curve linearity (R2=0.9995) and range (37.5 – 225 mg L-1), estimated limit of detection (LOD, 0.11mg L-1) and limit of quantification (LOQ, 0.37 mg L-1), precision (%RSD, 0.14 – 1.34), recoveries (83-110%) and stability (%RSD, 0.8 – 2.83). To obtain more representative values for precision, recoveries and stability simultaneous replicates at different times, on different matrices including plant (marigold, chamomile and lavender) were performed during the study period. The validated method was successfully applied to determine TPC in marigold extracts. For chamomile and lavender extracts, the spectrometric method presented only acceptable precision, among all the performance parameters studied. The sources of the gallic acid concentration measurement uncertainty include purity, volume of flasks, mass and the calibration equation. The results indicated that the uncertainty components from purity were the smallest. An important source of the uncertainty was the mass.The volumes of the volumetric flasks had only modest effect on the uncertainty. The contribution of calibration equation is the greatest from all sources.

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Section: Methods Applicabilitysupporting

confidence: 91%

Section: Methods Applicabilitymentioning

confidence: 99%

Determination of Total Phenolic Content From Plant Extracts Used in Cosmetic Purpose

Dobrinaș

Soceanu

2021

J. Sci. Arts

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“…A high concentration of polyphenols in the sample, mainly of the flavonoid type, contributes to greater efficiency in the elimination of free radicals. Mikolajczak et al (2020) demonstrated a positive correlation (r ¼ 0.75) between flavonoid content and antioxidant activity in various edible flowers. Thus, natural antioxidants can act as free radical scavengers, chain breakers, pro-oxidant metal ion complexes, and singlet-oxygen formation inhibitors (Tosun et al, 2011).…”

Section: Determination Of Antioxidant Capacitymentioning

confidence: 89%

Jacaranda flower (Jacaranda mimosifolia) as an alternative for antioxidant and antimicrobial use

Aguirre‐Becerra

Pineda-Nieto

García‐Trejo

et al. 2020

Heliyon

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Antimicrobial resistance to antibiotics is a serious health problem worldwide, for this reason, the search for natural agents with antimicrobial power against pathogenic microorganisms is of current importance. The objective of this work was to evaluate the antioxidant capacity (ABTS+ and DPPH), antimicrobial activity, and polyphenol compounds of methanolic and aqueous extracts of Jacaranda mimosifolia flowers. The antimicrobial activity against Bacillus cereus ATCC 10876 , Bacillus subtilis ATCC 6633 , Enterococcus faecalis ATCC 51299 , Escherichia coli ATCC 25922 , Listeria monocytogenes ATCC 19115 , Pseudomonas aeruginosa ATCC 27853 , Salmonella typhimurium ATCC 14028, Staphylococcus aureus ATCC 25923, and Streptococcus mutans ATCC 25175, was determined using the Kirby Bauer technique. The results of polyphenolic compounds showed a high amount of total flavonoids in the methanolic and aqueous extracts (503.3 ± 86.5 and 245. 7 ± 27.8 mg Rutin Equivalents/g DW, respectively). Quercetin, gallic acid, caffeic acid, and rutin were identified by the HPLC-DAD technique, while in the GC-MS analysis, esters, fatty acids, organic compounds, as well as monosaccharides were identified. Higher antioxidant capacity was detected by the ABTS technique (94.9% and 62.6%) compared to DPPH values (52.5% and 52.7 %) for methanolic and aqueous extracts, respectively. The methanolic extract showed a greater inhibitory effect on gram-positive bacteria, with a predominant higher inhibition percentage on Listeria monocytogenes and Streptococcus mutans (86% for both). In conclusion, Jacaranda flower extracts could be a natural antimicrobial and antioxidant alternative due to the considerable amount of polyphenolic compounds, and serve as a sustainable alternative for the isolation of active ingredients that could help in agriculture, aquaculture, livestock, pharmaceutics, and other industrial sectors, to remediate problems such as oxidative stress and antimicrobial abuse.

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“…PUFAs are more susceptible to chemical modifications, such as metal-catalyzed autoxidation and hydrogenation, than are SFAs, because they possess multiple C=C bonds that are vulnerable to electrophilic attack. Oxidative loss of PUFAs in foods and supplements is generally controlled by adding natural antioxidants (e.g., plant extract), synthetic antioxidants (e.g., DL-α-tocopherol, butylated hydroxytoluene (BHT), butylated hydroxyanisole (BHA), and ascorbyl palmitate (AP)), or metal chelating agents (e.g., phytic acid) alone or in combination [127][128][129][130].…”

Section: Low Oxidative Stability Of Pufas In Foods Is a Challengementioning

confidence: 99%

“…In recent years, with increasing consumer preference for natural over synthetic products, several investigations have attempted to incorporate natural antioxidants (e.g., polyphenols, carotenoids, and tocopherols) from the edible plant materials [127][128][129][130]. Polyphenol-rich rosemary extracts have been shown as more efficient than α-tocopherol BHT in stabilizing the n−3 PUFA in flaxseed oil [127].…”

Section: Low Oxidative Stability Of Pufas In Foods Is a Challengementioning

confidence: 99%

Omega−3 Polyunsaturated Fatty Acids (PUFAs): Emerging Plant and Microbial Sources, Oxidative Stability, Bioavailability, and Health Benefits—A Review

et al. 2021

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The omega−3 (n−3) polyunsaturated fatty acids (PUFAs) eicosapentaenoic acid (EPA) and docosahexaenoic (DHA) acid are well known to protect against numerous metabolic disorders. In view of the alarming increase in the incidence of chronic diseases, consumer interest and demand are rapidly increasing for natural dietary sources of n−3 PUFAs. Among the plant sources, seed oils from chia (Salvia hispanica), flax (Linum usitatissimum), and garden cress (Lepidium sativum) are now widely considered to increase α-linolenic acid (ALA) in the diet. Moreover, seed oil of Echium plantagineum, Buglossoides arvensis, and Ribes sp. are widely explored as a source of stearidonic acid (SDA), a more effective source than is ALA for increasing the EPA and DHA status in the body. Further, the oil from microalgae and thraustochytrids can also directly supply EPA and DHA. Thus, these microbial sources are currently used for the commercial production of vegan EPA and DHA. Considering the nutritional and commercial importance of n−3 PUFAs, this review critically discusses the nutritional aspects of commercially exploited sources of n−3 PUFAs from plants, microalgae, macroalgae, and thraustochytrids. Moreover, we discuss issues related to oxidative stability and bioavailability of n−3 PUFAs and future prospects in these areas.

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Edible flowers as a new source of natural antioxidants for oxidative protection of cold-pressed oils rich in omega-3 fatty acids

Cited by 37 publications

References 40 publications

Determination of Total Phenolic Content From Plant Extracts Used in Cosmetic Purpose

Determination of Total Phenolic Content From Plant Extracts Used in Cosmetic Purpose

Jacaranda flower (Jacaranda mimosifolia) as an alternative for antioxidant and antimicrobial use

Omega−3 Polyunsaturated Fatty Acids (PUFAs): Emerging Plant and Microbial Sources, Oxidative Stability, Bioavailability, and Health Benefits—A Review

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