Diurnal changes in Sorghum leaf starch molecular structure

Li, Cheng; Godwin, Ian D.; Gilbert, Robert G.

doi:10.1016/j.plantsci.2015.07.026

Cited by 30 publications

(14 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This has also been observed previously in sorghum (Li et al, 2015a). The smaller granular and molecular sizes in leaf starch, compared with those in endosperm starch, might sterically inhibit the growth of amylopectin chains.…”

Section: Size Distributions Of Whole Starch Molecules From Endosperm supporting

confidence: 85%

“…It may be the case that smaller granular and molecular sizes supply less binding sites for the starch-biosynthetic enzymes and results in shorter chains being synthesized. For example, in sorghum, it has been found that leaf starch has much smaller granular size and molecular size than endosperm starch, and the molecular size increases towards the outer parts of the granules, which could supply more binding sites for starch-biosynthetic enzymes (Li et al, 2015a;Li et al, 2015b). The factors determining the granular size and molecular size are unknown, but as suggested elsewhere (Li et al, 2015a) …”

Section: Size Distributions Of Whole Starch Molecules From Endosperm mentioning

confidence: 99%

“…The method for preparing starch samples for SEC was described elsewhere (Li et al, 2015a;Syahariza et al, 2010;Wu et al, 2014a). In brief, protein was removed as much as possible from the samples by using successive treatments by protease and sodium bisulfite solution.…”

Section: Starch Extraction and Size-exclusion Chromatographymentioning

confidence: 99%

“…The molecules with R h < 10 nm are considered to contain non-starch components, as suggested by previous studies (Li et al, 2015a;Syahariza et al, 2010).…”

Section: Size Distributions Of Whole Starch Molecules From Endosperm mentioning

confidence: 99%

“…This contamination has been shown to elute in the amylose region in both the SEC weight distributions of whole starch molecules and the chain-length distributions (Li, Godwin & Gilbert, 2015a;Syahariza, Li & Hasjim, 2010). Method optimization on starch extraction from leaves would be needed to overcome this problem.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Molecular structural differences between maize leaf and endosperm starches

Zhang

Cheng

et al. 2017

Carbohydrate Polymers

Self Cite

View full text Add to dashboard Cite

Highlights Leaf starch has much shorter amylopectin chains than endosperm starch  Leaf starch has much smaller molecules than endosperm starch  Leaf starch granules are smaller than endosperm granules  Differences between leaf and endosperm starch related to their biosynthesis process 3 AbstractThe morphology, whole molecular size distribution and chain-length distribution of maize leaf starch have been characterized and compared to its endosperm starch, to better understand differences between leaf and endosperm starch structure, and the relationship with the functions of starch in these organs. Leaf starch is found to have amylopectin with much shorter chains (virtually none with a degree of polymerization, DP, above 70) than the endosperm amylopectin, which has significant numbers of chains with DP up to ~120, and has much smaller molecular size (and is present at a much lower amount) than endosperm starch. It is postulated that these pronounced differences arise from the distinct starch synthesis pathways in these organs, and are consistent with the starches" distinct botanical functions: short-term storage requiring relatively rapid degradation for leaf starch, and high crystallinity and high energy density requiring slow degradation for endosperm starch.

show abstract

Section: Size Distributions Of Whole Starch Molecules From Endosperm supporting

confidence: 85%

Section: Size Distributions Of Whole Starch Molecules From Endosperm mentioning

confidence: 99%

Section: Starch Extraction and Size-exclusion Chromatographymentioning

confidence: 99%

“…The molecules with R h < 10 nm are considered to contain non-starch components, as suggested by previous studies (Li et al, 2015a;Syahariza et al, 2010).…”

Section: Size Distributions Of Whole Starch Molecules From Endosperm mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Molecular structural differences between maize leaf and endosperm starches

Zhang

Cheng

et al. 2017

Carbohydrate Polymers

Self Cite

View full text Add to dashboard Cite

show abstract

Peculiarities of Cross‐Linking Degree Determination for the Starches of Different Botanical Origin

et al. 2021

View full text Add to dashboard Cite

Starches of different botanical origin, namely potato, wheat, and corn are cross‐linked with epichlorohydrin (EPI) at cross‐linking agent to starch molar ratios of 0.0005:1, 0.0017:1, 0.0055:1, and 0.01:1. The degree of cross‐linking is evaluated by determining the solubility in aqueous 1 m KOH solution and assessing pasting properties of aqueous starch suspensions. It is found that the size of starch microgranules affects the degree of cross‐linking and the smaller the granules are, the more cross‐linking agent is required to achieve the same solubility or viscosity characteristics. The assessment of two methods reveals that solubility in alkali solution method can be used when determining the degree of cross‐linking of starch in a wide range, meanwhile, a viscoamylography approach is only suitable when the amount of EPI in the modification reaction is increased to 0.01 mol per mole of starch. The peculiarities of both methods are discussed and may be useful when determining the degree of cross‐linking of different starches with potential application as thickeners or sorbents.

show abstract

The Overview of Functional Starch

Zhou

2018

Functional Starch and Applications in Food

View full text Add to dashboard Cite

Diurnal changes in Sorghum leaf starch molecular structure

Cited by 30 publications

References 47 publications

Molecular structural differences between maize leaf and endosperm starches

Molecular structural differences between maize leaf and endosperm starches

Peculiarities of Cross‐Linking Degree Determination for the Starches of Different Botanical Origin

The Overview of Functional Starch

Contact Info

Product

Resources

About