Grain phenolics: critical role in quality, storage stability and effects of processing in major grain crops—a concise review

Ali, Ansheef; Kumar, Ranjeet; Vinutha, T.; Singh, Tejveer; Singh, Sher; Satyavathi, C. Tara; Praveen, Shelly; Goswami, Suneha

doi:10.1007/s00217-022-04026-7

Cited by 7 publications

(4 citation statements)

References 155 publications

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“…However, in cereal grains such as wheat, HCAs decreased up to 30% over ambient storage in as short of a period as 8 weeks (Ali et al, 2022). On the other hand, free HCAs in rice decreased over storage more so than bound HCAs (Ali et al, 2022). Since IWG contains a significantly high proportion of bound‐to‐free HCAs, the observed increase in ferulic and p‐coumaric acids is reasonable.…”

Section: Resultsmentioning

confidence: 99%

“…The increase was primarily attributed to HCAs being released from cell wall material over time (Srisuma et al, 1989). However, in cereal grains such as wheat, HCAs decreased up to 30% over ambient storage in as short of a period as 8 weeks (Ali et al, 2022). On the other hand, free HCAs in rice decreased over storage more so than bound HCAs (Ali et al, 2022).…”

Section: Antioxidant Content and Activitymentioning

confidence: 99%

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Impact of processing and storage on rancidity markers in commercial and novel cultivar candidates of intermediate wheatgrass (Thinopyrum intermedium)

Loehr,

Bajgain,

Selfridge

et al. 2024

Cereal Chem

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Background and ObjectivesBreeding of intermediate wheatgrass (Thinopyrum intermedium, IWG) culminated in the release of a commercial cultivar (MN‐Clearwater) with attractive environmental and nutritional benefits. Determining the impacts of ambient storage and common postharvest processing on the stability of IWG flour is essential to promote it as a food ingredient. Accordingly, MN‐Clearwater and two other potential cultivars, selected for their unique chemical composition, were subjected to extrusion and germination followed by 8 months of storage. Antioxidants, lipase and lipoxygenase activity, free fatty acid (FFA), peroxide value (PV), and volatile odor compounds (VOC) were analyzed at different timepoints.FindingsWhile germination caused a significant increase in lipase activity (~threefold in MN‐Clearwater), extrusion resulted in complete lipase degradation. Additionally, lipase activity was more consequential to hydrolytic rancidity than fat content. Regardless, results indicated that the endogenously abundant antioxidants can combat rancidity facilitated by enzymes and autoxidation as evidenced by significant losses in carotenoids between 3 and 6 months of storage (with 70%–80% reduction after 6 months of storage), when steep increases in FFA (up to 40% oleic acid/100 g fat), PV (two‐fourfolds increase after 6 months of storage), and VOC (hexanal and 2‐pentyl‐furan) occurred.Significance and NoveltyThe findings of this work serve as an impetus for IWG breeding advancements since enzymes and antioxidants can be traits that breeders may consider when selecting cultivar candidates. Results can be also utilized to understand the impact of postharvest processing of the grain on the storage stability of its flour.

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Section: Resultsmentioning

confidence: 99%

Section: Antioxidant Content and Activitymentioning

confidence: 99%

Impact of processing and storage on rancidity markers in commercial and novel cultivar candidates of intermediate wheatgrass (Thinopyrum intermedium)

Loehr,

Bajgain,

Selfridge

et al. 2024

Cereal Chem

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“…Some fungal species can also produce a range of mycotoxins ( Luo et al., 2021 ), which are chemically or heat stable, and difficult to be degraded, leading to various adverse health effects including teratogenicity, carcinogenicity, mutagenicity, immunotoxicity, or neurotoxicity ( Haque et al., 2020 ; Suman, 2021 ). Mycotoxin contamination is considered to be one of the most serious food safety problems in the world ( Ali et al., 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Survey and toxigenic abilities of Aspergillus, Fusarium, and Alternaria fungi from wheat and paddy grains in Shanghai, China

Meng¹,

Li²,

Huang³

et al. 2023

Front. Plant Sci.

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A systematic study was carried out on 638 wheat and paddy grains (including fresh and stored samples) collected in 2021 from Shanghai, China, to identify the major mycobiota and their toxigenic abilities. A total of 349 fungi, namely, 252 Fusarium, 53 Aspergillus, and 44 Alternaria, were characterized by morphological and molecular identification. Fusarium and Aspergillus were more frequently isolated in paddy with Fusarium sambucinum species complex and Aspergillus section flavi as the predominant species, respectively. The genus Alternaria was the most frequently isolated fungal species in wheat. The toxin-producing potentials of the identified fungi were further evaluated in vitro. Deoxynevalenol (DON) was produced by 34.5% of Fusarium isolates and zearalenone (ZEN) was produced by 47.6% of them, and one isolate also processed the abilities for fumonisin B1 (FB1), B2 (FB2), and B3 (FB3) productions. Aflatoxin B1 (AFB1), B2 (AFB2), and G1 (AFG1) were only generated by Aspergillus section flavi, with the production rate of 65.5%, 27.6%, and 13.8%, respectively. Alternariol (AOH) was the most prevalent Alternaria toxin, which could be produced by 95.5% of the isolates, followed by alternariol monomethyl ether (AME) (72.7%), altenuene (ALT) (52.3%), tenuazonic acid (TeA) (45.5%), tentoxin (TEN) (29.5%), and altenusin (ALS) (4.5%). A combinational analysis of mycobiota and toxigenic ability allowed us to provide comprehensive information about the production mechanisms of mycotoxins in wheat and paddy in a specific geographic area, and will be helpful for developing efficient prevention and control programs.

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“…In PM, they are well characterized for their antioxidant properties and changes in their composition during different processing procedures. 9 However, limited information is available on their release from the food matrix and the extent of antioxidant activity provided under physiological conditions. Such studies have already been carried out in rice, 10 wheat, 11 etc .…”

Section: Introductionmentioning

confidence: 99%

Effect of thermal treatments on the matrix components, inherent glycemic potential, and bioaccessibility of phenolics and micronutrients in pearl millet rotis

et al. 2023

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Grain phenolics: critical role in quality, storage stability and effects of processing in major grain crops—a concise review

Cited by 7 publications

References 155 publications

Impact of processing and storage on rancidity markers in commercial and novel cultivar candidates of intermediate wheatgrass (Thinopyrum intermedium)

Impact of processing and storage on rancidity markers in commercial and novel cultivar candidates of intermediate wheatgrass (Thinopyrum intermedium)

Survey and toxigenic abilities of Aspergillus, Fusarium, and Alternaria fungi from wheat and paddy grains in Shanghai, China

Effect of thermal treatments on the matrix components, inherent glycemic potential, and bioaccessibility of phenolics and micronutrients in pearl millet rotis

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