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Collins A, Santhakumar A, Latif S, Chinkwo K, Francis N, Blanchard C. Impact of Processing on the Phenolic Content and Antioxidant Activity of Sorghum bicolor L. Moench. Molecules 2024; 29:3626. [PMID: 39125031 PMCID: PMC11314228 DOI: 10.3390/molecules29153626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Revised: 07/19/2024] [Accepted: 07/30/2024] [Indexed: 08/12/2024] Open
Abstract
Sorghum, a cereal grain rich in nutrients, is a major source of phenolic compounds that can be altered by different processes, thereby modulating their phenolic content and antioxidant properties. Previous studies have characterised phenolic compounds from pigmented and non-pigmented varieties. However, the impact of processing via the cooking and fermentation of these varieties remains unknown. Wholegrain flour samples of Liberty (WhiteLi1 and WhiteLi2), Bazley (RedBa1 and RedBa2), Buster (RedBu1 and RedBu2), Shawaya black (BlackSb), and Shawaya short black 1 (BlackSs) were cooked, fermented, or both then extracted using acidified acetone. The polyphenol profiles were analysed using a UHPLC-Online ABTS and QTOF LC-MS system. The results demonstrated that combining the fermentation and cooking of the BlackSs and BlackSb varieties led to a significant increase (p < 0.05) in total phenolic content (TPC) and antioxidant activities, as determined through DPPH, FRAP, and ABTS assays. The 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activity of WhiteLi1, BlackSb, RedBu2, and BlackSs increased by 46%, 32%, 25%, and 10%, respectively, post fermentation and cooking. Conversely, fermentation only or cooking generally resulted in lower phenolic content and antioxidant levels than when samples were fully processed compared to raw. Notably, most of the detected antioxidant peaks (53 phenolic compounds) were only detected in fermented and cooked black and red pericarp varieties. The phenolic compounds with the highest antioxidant activities in pigmented sorghum included 3-aminobenzoic acid, 4-acetylburtyic acid, malic acid, caffeic acid, and luteolin derivative. Furthermore, the growing location of Bellata, NSW, showed more detectable phenolic compounds following processing compared to Croppa Creek, NSW. This study demonstrates that sorghum processing releases previously inaccessible polyphenols, making them available for human consumption and potentially providing added health-promoting properties.
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Affiliation(s)
- Aduba Collins
- School of Dentistry and Medical Sciences, Faculty of Science and Health, Charles Sturt University, Wagga Wagga, NSW 2650, Australia; (A.C.); (K.C.); (C.B.)
| | - Abishek Santhakumar
- School of Dentistry and Medical Sciences, Faculty of Science and Health, Charles Sturt University, Wagga Wagga, NSW 2650, Australia; (A.C.); (K.C.); (C.B.)
- Gulbali Institute, Charles Sturt University, Wagga Wagga, NSW 2650, Australia;
| | - Sajid Latif
- National Life Sciences Hub, Charles Sturt University, Wagga Wagga, NSW 2650, Australia;
| | - Kenneth Chinkwo
- School of Dentistry and Medical Sciences, Faculty of Science and Health, Charles Sturt University, Wagga Wagga, NSW 2650, Australia; (A.C.); (K.C.); (C.B.)
- Gulbali Institute, Charles Sturt University, Wagga Wagga, NSW 2650, Australia;
| | - Nidhish Francis
- Gulbali Institute, Charles Sturt University, Wagga Wagga, NSW 2650, Australia;
- School of Agricultural, Environmental and Veterinary Sciences, Charles Sturt University, Wagga Wagga, NSW 2650, Australia
| | - Christopher Blanchard
- School of Dentistry and Medical Sciences, Faculty of Science and Health, Charles Sturt University, Wagga Wagga, NSW 2650, Australia; (A.C.); (K.C.); (C.B.)
- Gulbali Institute, Charles Sturt University, Wagga Wagga, NSW 2650, Australia;
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Khojah H, Ahmed SR, Alharbi SY, AlSabeelah KK, Alrayyes HY, Almusayyab KB, Alrawiliy SR, Alshammari RM, Qasim S. Skin anti-aging potential of Launaea procumbens extract: Antioxidant and enzyme inhibition activities supported by ADMET and molecular docking studies. Saudi Pharm J 2024; 32:102107. [PMID: 38873335 PMCID: PMC11170203 DOI: 10.1016/j.jsps.2024.102107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024] Open
Abstract
Aging is a natural process that occurs in all living organisms. Particularly, the skin embodies aging since it serves as a barrier between the body and its surroundings. Previously, we reported the wound healing effect of Launaea procumbens and identified compounds therein. The study aims to explore the skin anti-aging properties of the plant extract. To that effect, the antioxidant potential of L. procumbens methanolic extract (LPM) was assessed using two complementary DPPH and FRAP assays. The enzyme inhibitory effect of the extract on collagenase, elastase, hyaluronidase, and tyrosinase was evaluated to assess the direct skin anti-aging effects. Similarly, the anti-inflammatory activity was evaluated to explore the indirect anti-aging effects via the assessment of extract inhibitory effects on cyclooxygenase-2 (COX-2) and 5-lipoxygenase (5-LOX). In addition, ADMET and molecular docking studies were performed to explore the interaction mechanisms of identified compounds in LPM with target enzymes. LPM demonstrated significant antioxidant activity in DPPH (IC50 = 29.08 µg/mL) and FRAP (1214.67 µM FeSO4/g extract) assays. Plant extract showed significant inhibition of collagenase, elastase, hyaluronidase, and tyrosinase (IC50 = 52.68, 43.76, 31.031, and 37.13 µg/mL, respectively). The extract demonstrated significant COX-2 and 5-LOX inhibition capacity with IC50 values of 8.635 and 10.851 µg/mL, respectively. The molecular docking study revealed the high potential of the identified compounds to bind to the active sites of enzymes crucially involved in the skin aging process. ADMET analysis of the compounds revealed their good absorption, distribution, and metabolism profiles, and they were found to be safe as well. Study findings suggest L. procumbens as a promising source for the development of natural skin anti-aging and antioxidant compounds. This, in turn, may facilitate its incorporation into cosmetic formulations after further investigation.
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Affiliation(s)
- Hanan Khojah
- Department of Pharmacognosy, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Shaima R. Ahmed
- Department of Pharmacognosy, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Shahad Y. Alharbi
- Department of Pharmacognosy, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Kholood K. AlSabeelah
- Department of Pharmacognosy, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Hatham Y. Alrayyes
- Department of Pharmacognosy, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Kadi B. Almusayyab
- Department of Pharmacognosy, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Shahad R. Alrawiliy
- Department of Pharmacognosy, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Raghad M. Alshammari
- Department of Pharmacognosy, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Sumera Qasim
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
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Desta KT, Choi YM, Yoon H, Lee S, Yi J, Jeon YA, Wang X, Park JC, Kim KM, Shin MJ. Comprehensive Characterization of Global Barley ( Hordeum vulgare L.) Collection Using Agronomic Traits, β-Glucan Level, Phenolic Content, and Antioxidant Activities. PLANTS (BASEL, SWITZERLAND) 2024; 13:169. [PMID: 38256723 PMCID: PMC10818635 DOI: 10.3390/plants13020169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/18/2023] [Accepted: 01/05/2024] [Indexed: 01/24/2024]
Abstract
This study characterized the diversity of 367 barley collections from 27 different countries, including 5 control cultivars, using several phenotypic traits. Morphological traits, including spike type, grain morphology, cold damage, and lodging rate, exhibited wide variations. Eighteen accessions matured early, while four accessions had longer culm and spike lengths than the controls. The ranges of total phenolic content (TPC), β-glucan content, ABTS•+ scavenging activity, DPPH• scavenging activity, and reducing power (RP) were 1.79-6.79 mg GAE/g, 0.14-8.41 g/100 g, 3.07-13.54 mg AAE/100 g, 1.56-6.24 mg AAE/g, and 1.31-7.86 mg AAE/g, respectively. Betaone, one of the controls, had the highest β-glucan content. Two accessions had β-glucan levels close to Betaone. Furthermore, 20 accessions exhibited increased TPC compared to the controls, while 5 accessions displayed elevated ABTS•+ scavenging activity. Among these, one accession also exhibited higher DPPH• scavenging activity and RP simultaneously. Based on the statistical analysis of variance, all the quantitative traits were significantly affected by the difference in origin (p < 0.05). On the other hand, grain morphology significantly affected biochemical traits. Multivariate analysis classified barley accessions into eight groups, demonstrating variations in quantitative traits. There were noteworthy correlations between biochemical and agronomical traits. Overall, this study characterized several barley varieties of different origins, anticipating future genomic research. The barley accessions with superior performances could be valuable alternatives in breeding.
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Affiliation(s)
- Kebede Taye Desta
- National Agrobiodiversity Center, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Republic of Korea
| | - Yu-Mi Choi
- National Agrobiodiversity Center, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Republic of Korea
| | - Hyemyeong Yoon
- National Agrobiodiversity Center, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Republic of Korea
| | - Sukyeung Lee
- International Technology Cooperation Center, Technology Cooperation Bureau, Rural Development Administration, Jeonju 54875, Republic of Korea
| | - Jungyoon Yi
- National Agrobiodiversity Center, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Republic of Korea
| | - Young-ah Jeon
- National Agrobiodiversity Center, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Republic of Korea
| | - Xiaohan Wang
- National Agrobiodiversity Center, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Republic of Korea
| | - Jin-Cheon Park
- National Institute of Crop Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Kyeong-Min Kim
- National Institute of Crop Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Myoung-Jae Shin
- National Agrobiodiversity Center, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Republic of Korea
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Alemayehu GF, Forsido SF, Tola YB, Amare E. Nutritional and Phytochemical Composition and Associated Health Benefits of Oat ( Avena sativa) Grains and Oat-Based Fermented Food Products. ScientificWorldJournal 2023; 2023:2730175. [PMID: 37492342 PMCID: PMC10365923 DOI: 10.1155/2023/2730175] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 03/27/2023] [Accepted: 07/04/2023] [Indexed: 07/27/2023] Open
Abstract
Oats (Avena sativa L.) are a popular functional cereal grain due to their numerous health benefits. This review article summarized the information on the chemical composition and phytonutrients of oats grown in different countries. It also reviewed recently developed fermented oat products to highlight their potential for human health. Oats have an interesting nutritional profile that includes high-quality protein, unsaturated fats, soluble fiber, polyphenolic compounds, and micronutrients. Oat grain has a unique protein composition, with globulins serving as the primary storage protein, in contrast to other cereals, where prolamins are the main storage proteins. Oats have the highest fat content of any cereal, with low saturated fatty acids and high essential unsaturated fatty acid content, which can help reduce the risk of cardiovascular diseases. Oats are a good source of soluble dietary fiber, particularly β-glucan, which has outstanding functional properties and is extremely important in human nutrition. β-Glucan has been shown to lower blood cholesterol and glucose absorption in the intestine, thereby preventing diseases such as cardiovascular injury, dyslipidemia, hypertension, inflammatory state, and type 2 diabetes. Oats also contain high concentration of antioxidant compounds. Avenanthramides, which are unique to oats, are powerful antioxidants with high antioxidative activity in humans. Recognizing the nutritional benefits of oats, oat-based fermented food products are gaining popularity as functional foods with high probiotic potential.
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Affiliation(s)
| | | | - Yetenayet B. Tola
- Department of Post-Harvest Management, Jimma University, Jimma, Ethiopia
| | - Endale Amare
- Food Science and Nutrition Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
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Zhang Y, Li Y, Ren X, Zhang X, Wu Z, Liu L. The positive correlation of antioxidant activity and prebiotic effect about oat phenolic compounds. Food Chem 2023; 402:134231. [DOI: 10.1016/j.foodchem.2022.134231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 09/07/2022] [Accepted: 09/11/2022] [Indexed: 01/18/2023]
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García-Castro A, Román-Gutiérrez AD, Castañeda-Ovando A, Cariño-Cortés R, Acevedo-Sandoval OA, López-Perea P, Guzmán-Ortiz FA. Cereals as a Source of Bioactive Compounds with Anti-Hypertensive Activity and Their Intake in Times of COVID-19. Foods 2022; 11:3231. [PMID: 37430980 PMCID: PMC9601750 DOI: 10.3390/foods11203231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/08/2022] [Accepted: 10/11/2022] [Indexed: 11/16/2022] Open
Abstract
Cereals have phytochemical compounds that can diminish the incidence of chronic diseases such as hypertension. The angiotensin-converting enzyme 2 (ACE2) participates in the modulation of blood pressure and is the principal receptor of the virus SARS-CoV-2. The inhibitors of the angiotensin-converting enzyme (ACE) and the block receptors of angiotensin II regulate the expression of ACE2; thus, they could be useful in the treatment of patients infected with SARS-CoV-2. The inferior peptides from 1 to 3 kDa and the hydrophobic amino acids are the best candidates to inhibit ACE, and these compounds are present in rice, corn, wheat, oats, sorghum, and barley. In addition, the vitamins C and E, phenolic acids, and flavonoids present in cereals show a reduction in the oxidative stress involved in the pathogenesis of hypertension. The influence of ACE on hypertension and COVID-19 has turned into a primary point of control and treatment from the nutritional perspective. The objective of this work was to describe the inhibitory effect of the angiotensin-converting enzyme that the bioactive compounds present in cereals possess in order to lower blood pressure and how their consumption could be associated with reducing the virulence of COVID-19.
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Affiliation(s)
- Abigail García-Castro
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca–Tulancingo, Km 4.5 s/n, Mineral de la Reforma, Hidalgo 42184, Mexico
| | - Alma Delia Román-Gutiérrez
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca–Tulancingo, Km 4.5 s/n, Mineral de la Reforma, Hidalgo 42184, Mexico
| | - Araceli Castañeda-Ovando
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca–Tulancingo, Km 4.5 s/n, Mineral de la Reforma, Hidalgo 42184, Mexico
| | - Raquel Cariño-Cortés
- Área Académica de Medicina, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Elíseo Ramírez Ulloa, 400, Doctores, Pachuca de Soto 42090, Mexico
| | - Otilio Arturo Acevedo-Sandoval
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca–Tulancingo, Km 4.5 s/n, Mineral de la Reforma, Hidalgo 42184, Mexico
| | - Patricia López-Perea
- Área de Ingeniería Agroindustrial, Universidad Politécnica Francisco I. Madero, Francisco I. Madero, Hidalgo 42660, Mexico
| | - Fabiola Araceli Guzmán-Ortiz
- CONACYT, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km 4.5 s/n, Mineral de la Reforma, Hidalgo 42184, Mexico
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Nkhata Malunga L, Ames N, Mitchell Fetch J, Netticadan T, Joseph Thandapilly S. Genotypic and environmental variations in phenolic acid and avenanthramide content of Canadian oat (Avena sativa). Food Chem 2022; 388:132904. [PMID: 35460963 DOI: 10.1016/j.foodchem.2022.132904] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 03/31/2022] [Accepted: 04/03/2022] [Indexed: 11/04/2022]
Abstract
Phenolic compounds (PC) in oat may possess health promoting properties. This study evaluated the effect of genotype, environment, and their interaction on the phenolic acid and avenanthramide (AVN) concentration in Canadian oat. Six cultivars were grown at eight locations across Canada in a randomised complete block design with three field replicates. Free PCs were extracted from oat groat flour and analysed using a UPLC-PDA system. The cumulative concentration of free PCs and AVN ranged from 58 to 350 and 9 to 244 µg/g, respectively. The effect of environment was significant (p < 0.0001) for the concentration of all PCs. Cultivar differences significantly influenced the concentration of all PCs but AVNs A and B. The growing location explained > 68% of the variation in the concentration of AVN. Thus understanding the genotypic and environmental triggers of individual PCs may help agronomists and breeders strategize in selecting and growing oat cultivars of interest.
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Affiliation(s)
- Lovemore Nkhata Malunga
- Agriculture & Agri-Food Canada, 196 Innovation Drive, Winnipeg, Manitoba R3T 6C5, Canada; Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba, 196 Innovation Drive, Winnipeg, Manitoba R3T 2N2, Canada; Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Nancy Ames
- Agriculture & Agri-Food Canada, 196 Innovation Drive, Winnipeg, Manitoba R3T 6C5, Canada; Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba, 196 Innovation Drive, Winnipeg, Manitoba R3T 2N2, Canada; Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.
| | - Jennifer Mitchell Fetch
- Agriculture & Agri-Food Canada, Brandon Research Development Center, Brandon, Manitoba, Canada
| | - Thomas Netticadan
- Agriculture & Agri-Food Canada, 196 Innovation Drive, Winnipeg, Manitoba R3T 6C5, Canada; Canadian Centre for Agri-Food Research in Health and Medicine, 351 Tache Avenue, Winnipeg, Manitoba R2H 2A6, Canada
| | - Sijo Joseph Thandapilly
- Agriculture & Agri-Food Canada, 196 Innovation Drive, Winnipeg, Manitoba R3T 6C5, Canada; Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba, 196 Innovation Drive, Winnipeg, Manitoba R3T 2N2, Canada; Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
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Martínez-Subirà M, Romero MP, Moralejo M, Macià A, Puig E, Savin R, Romagosa I. Post-anthesis thermal stress induces differential accumulation of bioactive compounds in field-grown barley. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:6496-6504. [PMID: 34000070 DOI: 10.1002/jsfa.11321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 02/18/2021] [Accepted: 05/17/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Barley (Hordeum vulgare L.) is a healthy grain because of its high content of dietary fibre and phenolic compounds. It faces periods of high temperature during grain filling, frequently reducing grain weight. Heat stress may also affect some of the bioactive compounds present in the grain. To produce quality grains that provide nutritional and health benefits, it is important to understand the effect of environmental stresses on the quantity and quality of bioactive compounds. RESULTS We have studied the effect of post-anthesis thermal stress on barley bioactive compounds and antioxidant capacity under Mediterranean field conditions during two consecutive growing seasons in four barley genotypes. Thermal stress affected grain weight and size and changed the relative composition of bioactive compounds. The relationship between heat stress and grain β-glucans and arabinoxylans content was indirect, as the resulting increases in concentrations were due to the lower grain weight under stress. Conversely, heat stress had a significant direct impact on some phenolic compounds, increasing their concentrations differentially across genotypes, which contributed to an improvement in antioxidant capacity of up to 30%. CONCLUSION Post-anthesis thermal stress had a significant effect on β-glucans, arabinoxylans, phenolic compound concentration and antioxidant capacity of barley grains. Final grain quality could, at least partially, be controlled in order to increase the bioactive concentrations in the barley grain, by cultivation in growing areas prone to heat stress. Late sowings or late flowering genotypes could also be considered, should a premium be implemented to compensate for lower yields. © 2021 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
| | | | - Marian Moralejo
- University of Lleida - AGROTECNIO-CERCA Center, Lleida, Spain
| | - Alba Macià
- University of Lleida - AGROTECNIO-CERCA Center, Lleida, Spain
| | - Eva Puig
- University of Lleida - AGROTECNIO-CERCA Center, Lleida, Spain
| | - Roxana Savin
- University of Lleida - AGROTECNIO-CERCA Center, Lleida, Spain
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Dvořáček V, Jágr M, Kotrbová Kozak A, Capouchová I, Konvalina P, Faměra O, Hlásná Čepková P. Avenanthramides: Unique Bioactive Substances of Oat Grain in the Context of Cultivar, Cropping System, Weather Conditions and Other Grain Parameters. PLANTS 2021; 10:plants10112485. [PMID: 34834847 PMCID: PMC8624809 DOI: 10.3390/plants10112485] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/10/2021] [Accepted: 11/12/2021] [Indexed: 11/16/2022]
Abstract
Our study was focused on the evaluation of the content of a wider spectrum of eight avenanthramides (AVNs) as unique components of oat grain under the effects of four selected factors (cultivar, locality, cropping system, and year). The weather effects on changes in the AVN content and their relationship to other important parameters of oat grain were further evaluated in more detail. A sensitive UHPLC system coupled with a QExactive Orbitrap mass spectrometer was used for AVN quantification. AVNs confirmed a high variability (RDS = 72.7–113.5%), which was dominantly influenced by the locality and year factors. While most AVN types confirmed mutually high correlations (r = 0.7–0.9), their correlations with the other 10 grain parameters were lower (r ≤ 0.48). Their significant correlations (0.27–0.46) with β-D-glucan could be used in perspective in breeding programs for the synergetic increase of both parameters. PCA analysis and Spearman correlations based on individual cultivars confirmed a significant effect of June and July precipitation on the increase of Σ AVNs. However, the results also indicated that higher precipitation can generate favorable conditions for related factors, such as preharvest sprouting evoking a direct increase of AVNs synthesis in oat grain.
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Affiliation(s)
- Václav Dvořáček
- Crop Research Institute, Drnovská 507, 161 06 Prague, Czech Republic; (V.D.); (M.J.); (A.K.K.)
| | - Michal Jágr
- Crop Research Institute, Drnovská 507, 161 06 Prague, Czech Republic; (V.D.); (M.J.); (A.K.K.)
| | - Anna Kotrbová Kozak
- Crop Research Institute, Drnovská 507, 161 06 Prague, Czech Republic; (V.D.); (M.J.); (A.K.K.)
| | - Ivana Capouchová
- Department of Agroecology and Crop Production, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic;
| | - Petr Konvalina
- Department of Agroecosystems, Faculty of Agriculture, University of South Bohemia in České Budějovice, Studentská 1668, 370 05 České Budějovice, Czech Republic;
| | - Oldřich Faměra
- Department of Food Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic;
| | - Petra Hlásná Čepková
- Crop Research Institute, Drnovská 507, 161 06 Prague, Czech Republic; (V.D.); (M.J.); (A.K.K.)
- Correspondence: ; Tel.: +420-233-022-415
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