scholarly journals Influence of Technological Maturity on the Secondary Metabolites of Hemp Concentrate (Cannabis sativa L.)

Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1418
Author(s):  
Bohuslava Tremlová ◽  
Hana Koudelková Mikulášková ◽  
Klaudia Hajduchová ◽  
Simona Jancikova ◽  
Dominika Kaczorová ◽  
...  
Keyword(s):  
Phenolic Content ◽  
Cannabis Sativa ◽  
Biologically Active ◽  
Therapeutic Effects ◽  
Antioxidant Power ◽  
Optimal Period ◽  
Ferric Reducing Antioxidant Power ◽  
Total Polyphenolic Content ◽  
Almost All ◽  
Active Substances

During the last decade, the popularity of hemp products has been rising rapidly. Products containing cannabidiol (CBD) are of predominant interest. Traditional hemp products are frequently enriched by CBD due to their potential therapeutic effects. Cannabidiol occurs naturally in hemp juice together with other biologically active substances, such as terpenes, flavonoids, and stilbenoids. These constituents act synergistically. This study aimed to observe the influence of the hemp plant developmental stage on its chemical composition and antioxidant activity. The hemp plants were analyzed during three vegetative stages, i.e., before, during, and after flowering. The collected samples were evaluated using the following analyses: total polyphenolic content and profile, terpenoid and cannabinoid contents, and ferric reducing antioxidant power. The results revealed statistically significant differences between the samples in almost all set parameters. The optimal period for hemp harvest depends on desirable compounds, i.e., phenolic content is the highest before flowering, while the levels of cannabinoids and terpenoids are the highest during the flowering period.

scholarly journals First Evaluation of the Biologically Active Substances and Antioxidant Potential of Regrowth Velvet Antler by means of Multiple Biochemical Assays

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Yujiao Tang ◽  
Byong-Tae Jeon ◽  
Yanmei Wang ◽  
Eun-Ju Choi ◽  
Pyo-Jam Park ◽  
...  
Keyword(s):  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Antioxidant Potential ◽  
Antioxidant Power ◽  
Biochemical Assays ◽  
Velvet Antler ◽  
Ferric Reducing Antioxidant Power ◽  
Active Substances

We investigated the biologically active substances contained in RVA (regrowth velvet antler) by comparing the composition of biologically active substances and antioxidant potential of different antler segments. RVA was subjected to extraction using DW (distilled water). RVA was divided into 3 segments: T-RVA (top RVA), M-RVA (middle RVA), and B-RVA (base RVA). The T-RVA section possessed the greatest amounts of uronic acid (36.251 mg/g), sulfated GAGs (sulfated glycosaminoglycans) (555.76 mg/g), sialic acid (111.276 mg/g), uridine (0.957 mg/g), uracil (1.084 mg/g), and hypoxanthine (1.2631 mg/g). In addition, the T-RVA section possessed the strongest antioxidant capacity as determined by DPPH, H2O2(hydrogen peroxide), hydroxyl, and ABTS (2,2′-azinobis-3-ethylbenzthiazoline-6-sulphonate) radical scavenging activity as well as FRAP (ferric reducing antioxidant power) and ORAC (oxygen radical absorbance capacity). The values of those were 53.44, 23.09, 34.12, 60.31, and 35.81 TE/μM at 1 mg/mL and 113.57 TE/μM at 20 μg/mL. These results indicate that the T-RVA section possesses the greatest amount of biologically active substances and highest antioxidant potential. This is the first report on the biologically active substances and antioxidant potential of RVA.

scholarly journals Preliminary evaluation of selected Prunus spinosa and P. insititia genotypes for their nutraceutical properties

2011 ◽  
Vol 17 (4-5) ◽  
Author(s):  
N. Papp ◽  
F. Szőke ◽  
Z. Szabó ◽  
J. Nyéki ◽  
É. Stefanovits-Bányai ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Preliminary Evaluation ◽  
Antioxidant Power ◽  
Phenolic Contents ◽  
Prunus Spinosa ◽  
Ferric Reducing Antioxidant Power ◽  
Total Polyphenolic Content

Fruits of nine Prunus spinosa and P. insititia selections were compared in their ferric reducing antioxidant power and total phenolic content. The antioxidant capacity and total phenolic content ranged between 6.36 and 29.26 mmol AA/L, and 5.04 and 29.71 mmol GA/L, respectively. These ranges cover an almost 5-times variation among the tested genotypes. The Pearson’s coefficient was very high (0.92) indicating a major contribution of polyphenolics to the antioxidant capacity of the tested Prunus fruits. Conserving resulted in an approximate 20 % loss of antioxidant power and slightly increased phenolic contents. Our results led us to the conclusion that fruit of Prunus spinosa and P. insititia might be considered as rich sources of antioxidants. In addition, procession with heat treatment caused only a slight decrease in the antioxidant capacity without loss in the total polyphenolic content.

scholarly journals Antioxidant capacity and total polyphenolic content in quince (Cydonia oblonga Mill.) fruit

2013 ◽  
Vol 19 (3-4) ◽  
Author(s):  
N. Papp ◽  
T. Szabó ◽  
Z. Szabó ◽  
J. Nyéki ◽  
A. Hegedűs
Keyword(s):  
Antioxidant Capacity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Cydonia Oblonga ◽  
Antioxidant Power ◽  
Commercial Cultivars ◽  
Polyphenolic Content ◽  
Ferric Reducing Antioxidant Power ◽  
Total Polyphenolic Content

Fruits of twelve quince (Cydonia oblonga Mill.) commercial cultivars and selections were compared in the ferric reducing antioxidant power (FRAP) and total phenolic content (TPC) of intact and peeled fruits. The antioxidant capacity and total phenolic content ranged between 5.99 and 63.10 mmol AA/100 g FW, and 3.92 and 12.83 g GA/100 g FW, respectively. These ranges cover an almost 8-times variation among the tested genotypes in case of antioxidant capacity and also declares two-times variation for total polyphenolic content. Cultivars ‘Aromate’ and ‘Bereczki’ possessed the lowest antioxidant capacity and ‘Román portugál’ and ‘Bereczki’ had the lowest polyphenolic contents. In contrast, cultivars ‘Champion’ and ‘Konstantinápolyi’ possessed the highest antioxidant capacity and ‘Mezôtúri’ and ‘De Husi’ had the highest polyphenolic contents. The Pearson’s coeffi cient was relatively moderate but signifi cant (r=0.51) indicating a weak interdependence between FRAP and TPC values of quince fruits. Our results led us to the conclusion that quince might be considered as a valuable source of antioxidants and polyphenolics.

scholarly journals Study of antioxidant activity of selected monocarbohydrazone derivatives

2021 ◽  
Vol 62 (1) ◽  
pp. 5-8
Author(s):  
Gorana Mrđan ◽  
Borko Matijević ◽  
Sanja Vlaisavljević ◽  
Đenđi Vaštag ◽  
Suzana Apostolov
Keyword(s):  
Sulfonic Acid ◽  
Biological Activities ◽  
Biologically Active ◽  
Radical Scavengers ◽  
Antioxidant Power ◽  
Antioxidant Agents ◽  
Wide Range ◽  
Anti Cancer ◽  
Ferric Reducing Antioxidant Power ◽  
Active Substances

Many of carbohydrazone derivatives have shown a wide range of biological activities. In previous studies, these compounds have proven to be excellent anti-cancer, antitumor, antibacterial, antimicrobial and antioxidant agents. Monocarbohydrazones, as one of the carbohydrazone derivatives, have been slightly explored. Due to that reason, in this study, eight newly synthesized monocarbohydrazones were subjected to examinations by the use of three antioxidant tests. To determine the effectiveness of monocarbohydrazone as potential radical scavengers, DPPH (2,2-Diphenyl-1-picrylhydrazyl), ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)) and FRAP (Ferric Reducing Antioxidant Power) assays were used. The obtained results could open the door for further studies of these compounds as biologically active substances.

scholarly journals Phytochemicals and Antioxidant Activity in Oat-Buckwheat Dough and Cookies with Added Spices or Herbs

Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2267
Author(s):  
Małgorzata Starowicz ◽  
Saruhan Arpaci ◽  
Joanna Topolska ◽  
Małgorzata Wronkowska
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Content ◽  
Weight Basis ◽  
Bioactive Molecules ◽  
Total Phenolic ◽  
Antioxidant Power ◽  
Wide Range ◽  
Confectionery Products ◽  
Ferric Reducing Antioxidant Power ◽  
Phytochemical Contents

The aim of this study was to determine the phytochemicals and antioxidant activity in oat-buckwheat doughs and cookies with the addition of ten selected spices or herbs (2 g/100 g flours weight basis). The used spices and herbs, as was expected, showed a wide range of bioactive molecules, namely phenolic acids and flavonoids, and they are a rich source of components with antioxidant potential. All analysed oat-buckwheat dough showed higher antioxidant activity potential and higher total phenolic content (TPC) compared to cookies. The highest TPC was found in clove, both dough and cookies, with its addition showing the highest ferric reducing antioxidant power. Generally, cookies with the addition of spice/herbs showed higher phytochemical contents and antioxidant activity compared to oat-buckwheat cookies without the condiment. The technology of obtaining confectionery products, like oat-buckwheat cookies, that will favor the protection of bioactive compounds should still be improved.

scholarly journals Changes of antioxidant activity in honey after heat treatment

2013 ◽  
Vol 31 (No. 6) ◽  
pp. 601-606 ◽  
Author(s):  
G. Šarić ◽  
K. Marković ◽  
D. Vukičević ◽  
E. Lež ◽  
M. Hruškar ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Antioxidant Power ◽  
Dpph Method ◽  
Significant Difference ◽  
Acacia Honey ◽  
Different Temperatures ◽  
Ferric Reducing Antioxidant Power

We determined how the antioxidant activity and total phenolic content of honey changed after being subjected to a high temperature. Antioxidant activity was determined using two methods – FRAP (ferric reducing antioxidant power) and DPPH (1,1-diphenyl-2-picrylhydrazyl) assays. Total phenolic content was determined by modified Folin-Ciocalteu method. The research was conducted on 31 samples of acacia honey and 8 samples of chestnut honey. All measurements were done at two temperatures – at 23°C (room temperature) and after 5 min of heating at 95°C. The obtained results show uneven changes of antioxidant activity and total phenolic content among individual samples, i.e. in some samples antioxidant activity decreased after heating, while in others it increased. The same applies to the total phenolic content. Statistical analysis of the results (t-test) showed no statistically significant differences between the results measured at two different temperatures (P > 0.05) in all three methods used, and in both types of honey. The only statistically significant difference (P < 0.05) was observed when using DPPH method in acacia honey.

scholarly journals Effect οf Genotype and Growing Year on the Nutritional, Phytochemical, and Antioxidant Properties of Industrial Hemp (Cannabis sativa L.) Seeds

Antioxidants ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 491 ◽  
Author(s):  
Maria Irakli ◽  
Eleni Tsaliki ◽  
Apostolos Kalivas ◽  
Fotios Kleisiaris ◽  
Eirini Sarrou ◽  
...  
Keyword(s):  
High Performance ◽  
Cannabis Sativa ◽  
Antioxidant Properties ◽  
Major Effect ◽  
Total Carotenoids ◽  
Antioxidant Power ◽  
Phenolic Profiles ◽  
Ferric Reducing Antioxidant Power ◽  
Industrial Hemp ◽  
Phytochemical Components

Cannabis sativa L. seeds have been an important source of protein, oil, and dietary fiber for human and animals. Currently, there is a growing interest in the commercial products of these seeds, which are recognized as a legitimate source of medicaments, cosmeceuticals, and nutraceuticals. The objective of this study was to investigate the nutritional, phytochemical composition, and antioxidant properties of seeds from seven hemp cultivars grown in Greece for three consecutive years. All the measured parameters strongly varied under the influence of growing year and genotype. In particular, protein, oil, and carbohydrates’ content of hemp seeds as well as fatty acids’ composition were mainly affected by genotype, whereas the growing year had a major effect on phytochemical components and antioxidant activity, which was determined by the 2,2′-azino-bis (3-ethylbenzthiazoline sulfonate) (ABTS) and ferric-reducing antioxidant power (FRAP) assays. Moreover, a predominant effect of the year was observed for phenolic profiles as determined by high-performance liquid chromatography and total carotenoids’ content. This study suggests that hemp seeds could be a promising food crop as a result of their high nutritive traits and antioxidant potential. A comparison of the studied cultivars, showed that Finola seeds had the highest oil and protein contents and, thus, appeared to be the most promising cultivar for cultivation in Greece.

Phenolic content and ferric reducing-antioxidant power of cow's milk produced in different pasture-based production systems in southern Brazil

2014 ◽  
Vol 94 (15) ◽  
pp. 3110-3117 ◽  
Author(s):  
Shirley Kuhnen ◽  
Juliana R Moacyr ◽  
Jaqueline K Mayer ◽  
Bruno B Navarro ◽  
Rafael Trevisan ◽  
...  
Keyword(s):  
Phenolic Content ◽  
Production Systems ◽  
Cow’S Milk ◽  
Southern Brazil ◽  
Antioxidant Power ◽  
Cow's Milk ◽  
Ferric Reducing Antioxidant Power

scholarly journals Chemical Characterization and Antioxidant Activity of Cedrus atlantica Manetti Tar (Atlas Cedar Tar)

2020 ◽  
Vol 8 (2) ◽  
pp. 244-255
Author(s):  
Inssaf Skanderi ◽  
Ourida Chouitah
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Capacity ◽  
Total Antioxidant Capacity ◽  
Condensed Tannins ◽  
Chemical Characterization ◽  
Antioxidant Power ◽  
Cedrus Atlantica ◽  
Total Antioxidant ◽  
Ferric Reducing Antioxidant Power ◽  
Total Polyphenolic Content

Cedrus atlantica Manetti Tar was analyzed by gas chromatography coupled to mass spectrometry, it was subjected to analyzes to know their total polyphenolic and condensed tannins contents, also their Ferric-reducing antioxidant power and Total antioxidant capacity. Chemical characterization identified 88 constituents where Himachalene and α-atlantone isomers (14.51 % - 4.07 %), Calacorene (3.52 %) and ar-Turmerone 3.35 %, were the major components, the total polyphenolic content and condensed tannins contents were 57.15 ± 0.15 milligrams equivalent of gallic acid /g tar and 4.41 ± 0.05 milligrams equivalent of catechin /g tar respectively .This extract showed remarkable Ferric-reducing antioxidant power with effective concentration equal to 50 ± 0.075 mg /mL ± 0,00028 and total antioxidant capacity equal to 262.75 mg equivalents of ascorbic acid /g tar ± 14,43. The experimental results indicated that our tar has promotive antioxidant activity.

scholarly journals Nutraceutical and Functional Properties of Peel, Pulp, and Seed Extracts of Six ‘Köhnü’ Grape Clones

Horticulturae ◽  
2021 ◽  
Vol 7 (10) ◽  
pp. 346
Author(s):  
Muhammed Kupe ◽  
Neva Karatas ◽  
Mehmet Settar Unal ◽  
Sezai Ercisli ◽  
Mojmir Baron ◽  
...  
Keyword(s):  
Total Phenolic Content ◽  
Phenolic Content ◽  
Grape Juice ◽  
Natural Antioxidants ◽  
Total Phenolic ◽  
Antioxidant Power ◽  
Ferric Reducing Antioxidant Power ◽  
Gallic Acid Equivalent ◽  
Black Color ◽  
Seed Extracts

Grape production has a long history in the Elazig province and surrounding vicinity and produced grapes have been used for table consumption and also processed into traditional beverages, Şıra (special non-alcoholic grape juice) and wine. In the Elazig province, the main grape cultivars are ‘Ağın Beyazı’, ‘Öküzgözü’, ‘Boğazkere’, ‘Şilfoni’, ‘Tahannebi’, and ‘Köhnü’. Among them, ‘Köhnü’ cultivar is highly preferred by consumers due to its black color and perfect berry characteristics. The cultivar has grown for centuries in different parts of Elazig and shows a great variability for most of its morphological and biochemical characteristics. In the present study, we aimed to determine morphological and biochemical traits in six ‘Köhnü’ clones sampled from Elazığ. The cluster weight of six clones was found between 334–394 g. The highest total phenolic content was observed in seeds followed by peel and pulp samples. The seed extract of Clone 2 had the highest total phenolic content at 254 mg gallic acid equivalent/100 g fresh weight. The results also showed that peel, pulp, and seed samples of ‘Köhnü’ grape clones had considerable amounts of antioxidant components determined by DPPH (1,1-Diphenyl-2-picryl-hydrazyl), FRAP (ferric reducing antioxidant power), and TEAC assays and might be rich sources of natural antioxidants. Among the six ‘Köhnü’ clones, Clone 3, and Clone 6 differed from the others in respect to the highest cluster weight, the highest concentrations of total phenolic content, and antioxidant activity. The results also implied that all clones could be used potentially as a readily accessible source of natural antioxidants and as a possible pharmaceutical supplement.

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