High resolution NMR study of tropical fruit seed starches

Costa, Paula de Miranda; Tavares, Maria Inês Bruno; Bathista, André L. B. S.; Silva, Emerson Oliveira da; Nogueira, José S.

doi:10.1002/app.26242

Cited by 12 publications

(4 citation statements)

References 9 publications

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“…NMR techniques were used to unravel the molecular dynamic behavior of melon and watermelon seed starches. [5] The starches from chempedak (Artocarpus integer), jackfruit (Artocarpus heterophyllus L.), and durian (Durio zibethinus L./Murr) fruit seeds had lower amylose contents and much smaller granule size than mung bean starch, and hence lower pasting viscosities. [6] Golden kiwifruit (Actinidia chinensis) seed starch presented a B-type polymorph.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound‐Assisted Extraction of Lychee (Litchi chinensis Sonn.) Seed Starch: Physicochemical and Functional Properties

et al. 2021

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High-power ultrasound (HPU) is a non-thermal processing method that has been researched and used in the last years. The application of ultrasound can modify and improve some technologically important compounds such as starch. This research aimed to examine the effect of ultrasound treatment on yield, physicochemical, and functional properties of lychee seed starch (LS). HPU experimental conditions used were sonication time (5 and 20 min) and amplitude (40% and 70% ). Starch yield significantly increased with increasing ultrasound amplitude and time. The ultrasound did not change the morphology and shape of the granules but caused cracks in their surface. Surface damage induced an increase in amylose content, relative crystallinity, enthalpy of gelatinization, swelling power, solubility index, and acid hydrolysis of the starch. These results indicate that ultrasound mainly affected the amorphous starch region. The morphology, size, color, rheological and thermal characteristics, crystal structure, and structural order features of the untreated and ultrasound-treated LSs were compared. A principal component analysis was carried out to assess the effect of the ultrasound treatment on LS characteristics.

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Section: Introductionmentioning

confidence: 99%

Ultrasound‐Assisted Extraction of Lychee (Litchi chinensis Sonn.) Seed Starch: Physicochemical and Functional Properties

et al. 2021

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“…The 1 H T 1ρ are sensitive to the motion of the proton system in short distances (intermolecular interactions) reflecting the motion of the segments in the multiphase system (Du Prez, Goethals, Adriaensens, Gelan, & Vanderzande, 1996). Therefore, the value of the 1 H T 1ρ increases with the increase of the molecular mobility of the phases as observed in the study of tropical seeds starches (de Miranda Costa, Bruno Tavares, Bathista, da Silva, & Nogueira, 2007;Maciel & Tavares, 2010;Tavares, Bathista, Silva, Filho, & Nogueira, 2003). The seeds Sempre Verde, Pitiuba, and Novato had similar patterns with the faster 1 H T 1ρ decay while the Tvu 382 seed presented longer 1 H T 1ρ decay.…”

Section: Ssnmrmentioning

confidence: 96%

Genotype evaluation of cowpea seeds (Vigna unguiculata) using 1H qNMR combined with exploratory tools and solid-state NMR

Filho

Silva

Teófilo

et al. 2017

Food Research International

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The ultimate aim of this study was to apply a non-targeted chemometric analysis (principal component analysis and hierarchical clustering analysis using the heat map approach) of NMR data to investigate the variability of organic compounds in nine genotype cowpea seeds, without any complex pre-treatment. In general, both exploratory tools show that Tvu 233, CE-584, and Setentão genotypes presented higher amount mainly of raffinose and Tvu 382 presented the highest content of choline and least content of raffinose. The evaluation of the aromatic region showed the Setentão genotype with highest content of niacin/vitamin B3 whereas Tvu 382 with lowest amount. To investigate rigid and mobile components in the seeds cotyledon, C CP and SP/MAS solid-state NMR experiments were performed. The cotyledon of the cowpea comprised a rigid part consisting of starch as well as a soft portion made of starch, fatty acids, and protein. The variable contact time experiment suggests the presence of lipid-amylose complexes.

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“…Plant secondary metabolites are an integral part of the host plant's resistance mechanisms against disease causing organisms, or for interaction with beneficial organisms (Wink, 2003). Prior research using nuclear magnetic resonance (NMR) technology has focused on analyzing watermelon fruits, seeds and leaves (de Miranda Costa et al, 2007;Mahmud et al, 2015) or on finding phytochemicals in the desert watermelon Citrullus colocynthis that have an important medicinal value (Chawech et al, 2015). Although there is sufficient information on roots of RKN-resistant CA accessions versus watermelon cultivars (CL) Levi, 2003, 2007), there has not been any study comparing their root metabolites.…”

Section: Nmr Analysis Reveals a Wealth Of Metabolites In Root-knot Nementioning

confidence: 99%

NMR Analysis Reveals a Wealth of Metabolites in Root-Knot Nematode Resistant Roots of Citrullus amarus Watermelon Plants

Kantor

Levi

Thies

et al. 2018

Journal of Nematology

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Citrullus amarus (CA) (previously known as Citrullus lanatus var. citroides) accessions collected in southern Africa are known to have resistance to root-knot nematodes (RKN) and are suitable rootstocks for grafted watermelon. The objective of this study was to conduct a comparative metabolomics analysis and identify unique metabolites in roots of CA accessions versus roots of watermelon cultivars (Citrullus lanatus (Thunb.) Matsum. and Nakai var. lanatus; CL). Nuclear magnetic resonance (NMR) technology and principal component analysis (PCA) were used to analyze and compare metabolic profiles of seven CA accessions resistant to RKN along with two RKNsusceptible watermelon cultivars (Charleston Gray and Crimson Sweet). Calculation of the Mahalanobis distance revealed that the CA United States Plant Introduction (PI) 189225 (Line number 1832) and PI 482324 (1849) have the most distinct metabolic profiles compared with the watermelon cultivars Charleston Gray and Crimson Sweet, respectively. Several amino acids identified in the CA accessions were reported in previous studies to have a nematicidal effect. The results in this study indicate that roots of watermelon accessions collected in the wild are rich in metabolic compounds. These metabolic compounds may have been diminished in watermelon cultivars as a consequence of many years of cultivation and selection for desirable fruit qualities.

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High resolution NMR study of tropical fruit seed starches

Cited by 12 publications

References 9 publications

Ultrasound‐Assisted Extraction of Lychee (Litchi chinensis Sonn.) Seed Starch: Physicochemical and Functional Properties

Ultrasound‐Assisted Extraction of Lychee (Litchi chinensis Sonn.) Seed Starch: Physicochemical and Functional Properties

Genotype evaluation of cowpea seeds (Vigna unguiculata) using 1H qNMR combined with exploratory tools and solid-state NMR

NMR Analysis Reveals a Wealth of Metabolites in Root-Knot Nematode Resistant Roots of Citrullus amarus Watermelon Plants

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