The effect of acid hydrolysis on morphological and crystalline properties of Rhizoma Dioscorea starch

Wang, Shujun; Yu, Jinglin; Yu, Jianxing; Chen, Hạixia; Jiping, Pang

doi:10.1016/j.foodhyd.2006.08.002

Cited by 47 publications

(18 citation statements)

References 18 publications

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“…In other words, the disruption of hydrogen bond in Mw-A pretreated samples occurs due to the rapid heating caused by microwave irradiation that can effectively increase the splitting effect of NaOH on the crystalline cellulose chain and maximize the expansion of the amorphous state (Liu et al 2012). In addition, the NaOH solution behaves as an intracrystalline swelling agent that is capable of penetrating and swelling both the accessible amorphous and crystalline regions, as previously reported by Shujun et al (2007). At the same time, the destruction of the cellulose crystalline structure occurred and the highly ordered fibrils in cellulose were distorted.…”

Section: Xrd Analysismentioning

confidence: 58%

Disruption of Oil Palm Trunks and Fronds by Microwave-Alkali Pretreatment

Lai¹,

Idris²

2013

BioResources

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In this study, lignocellulosic biomass from oil palm trunk (OPT) and oil palm frond (OPF) of oil palm tree, Elaeis guineensis, were treated using the microwave-alkali (Mw-A) method, and their chemical constituents, namely cellulose, hemicellulose, and lignin, were analyzed. A number of instruments, i.e. FESEM, FT-IR, and XRD, were employed to analyze the morphology and structural changes of biomass. After the Mw-A pretreatment, it was revealed that the amount of cellulose released was up to 41.55% for OPT and 64.42% for OPF. There was also a huge degree of reduction in hemicellulose, up to 64%, but lignin removal saw a fair reduction with only 15.33% for OPT and 17.97% for OPF. The results revealed that the Mw-A pretreatment is capable of disrupting the OPT and OPF.

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Section: Xrd Analysismentioning

confidence: 58%

Disruption of Oil Palm Trunks and Fronds by Microwave-Alkali Pretreatment

Lai¹,

Idris²

2013

BioResources

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“…Table 1 shows the recovery yield and the amylose content of native and acid-thinned sago starch. The recovery yield decreased from w100% for untreated starch to 94% after hydrolysis for 24 h. Shujun et al (2007) exposed Rhizoma Dioscoreae starch to acid hydrolysis and reported similar yield of recovery.…”

Section: Structural Characteristics Of Acid-thinned Sago Starchesmentioning

confidence: 81%

“…On the other hand, when hydrolysis was extended to >24 h the molecular weight of starch was reduced extensively. The recovery ratio was calculated as dried starch weight after hydrolysis per initial dried weight (Shujun, Jinglin, Jiugao, Haixia, & Jiping, 2007).…”

Section: Preparation Of Acid-thinned Sago Starch and Recovery Yield Mmentioning

confidence: 99%

Physicochemical, thermal, and rheological properties of acid-hydrolyzed sago (Metroxylon sagu) starch

Abdorreza

Robal

Cheng

et al. 2012

LWT - Food Science and Technology

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“…In general, acid hydrolysis treatment was not found to cause significant change in starch crystallinity type. This fact was observed in various starches that subjected to acid hydrolysis treatment such as rhizome Dioscorea opposite , cassava , and corn starches . However, the starch can undergo a transition of crystalline type with the increasing hydrolysis time.…”

Section: Structural Changes To Starch After Modificationmentioning

confidence: 92%

Structural changes to starch after acid hydrolysis, debranching, autoclaving‐cooling cycles, and heat moisture treatment (HMT): A review

2017

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Starch is a carbohydrate polymer consisting of glucose monomers with alpha-glycosidic bonds comprising amylose (linear chains) and amylopectin (linear and branched chains). Starch modification is generally carried out for two reasons. First, native starch has limited applications. Second, functional properties can be added to starch through the modification to produce resistant starch for use in functional foods. Resistant starch has been revealed to show several health benefits including increasing faecal bulk, lowering colonic pH, and reducing glycaemic response. Acid hydrolysis, debranching, autoclaving-cooling cycles, and heat moisture treatment (HMT) are the common methods involved in resistant starch production. These modifications can lead to changes in the structure of starch related to its resistance to human digestion. Here, the structural changes observed by gel-permeation/filtration chromatography (GPC/GFC), Fourier transform infra-red (FTIR) spectroscopy, X-ray diffractometry (XRD), differential scanning calorimetry (DSC), and scanning electron microscopy (SEM) are discussed.

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The effect of acid hydrolysis on morphological and crystalline properties of Rhizoma Dioscorea starch

Cited by 47 publications

References 18 publications

Disruption of Oil Palm Trunks and Fronds by Microwave-Alkali Pretreatment

Disruption of Oil Palm Trunks and Fronds by Microwave-Alkali Pretreatment

Physicochemical, thermal, and rheological properties of acid-hydrolyzed sago (Metroxylon sagu) starch

Structural changes to starch after acid hydrolysis, debranching, autoclaving‐cooling cycles, and heat moisture treatment (HMT): A review

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