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Luis A Bello‐Pérez José Juan Islas‐Hernández J Rodolfo Rendón‐Villalobos Edith Agama‐Acevedo Leticia Morales‐Franco Juscelino Tovar 《Journal of the science of food and agriculture》2007,87(8):1517-1522
Fresh and sun‐dried faba beans (Vicia faba L.) were cooked, stored for various times at 4 °C and analysed for available starch (AS), resistant starch (RS) and fibre‐associated resistant starch (FARS) contents as well as α‐amylolysis. Fresh beans required a shorter cooking time (25 min) than dried beans (158 min). Cooked fresh faba beans had a higher AS content than cooked dried faba beans. The AS content in both decreased during cold storage, with fresh beans showing a smaller decrease than dried beans with increasing storage time. Cooked fresh faba beans also had a higher total RS content than cooked dried faba beans, although a greater increase in RS content was recorded in the latter upon storage. Starch retrogradation was more prominent in cooked dried faba beans than in cooked fresh faba beans, as indicated by the consistently higher FARS content. The α‐amylolysis rate decreased with increasing storage time, i.e. long‐stored (72 h) cooked faba beans exhibited slower starch digestion, and differences were recorded between fresh and dried beans. The predicted glycaemic index ranged between 60.9 and 58.0% for cooked fresh faba beans and between 57.9 and 55.8% for cooked dried faba beans, which is suggestive of slow glucose release from starch in faba beans. Copyright © 2007 Society of Chemical Industry 相似文献
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花芸豆淀粉的性质研究 总被引:1,自引:0,他引:1
研究测定花芸豆淀粉颗粒、糊及其凝胶等特性。发现淀粉颗粒多呈椭圆的腰形,少数圆形,大颗粒表面有明显轮纹,有呈细长或中心放射状的位于颗粒中部的裂纹;偏光十字清晰,多沿长轴方向拉伸呈X形;线条有少许弯曲,有裂纹的颗粒,其偏光十字多有分叉。粒径范围为10~60μm,平均粒径24μm,呈A型结晶图样,结晶区约56.8%,糊化温度73.7~88.3℃,糊化焓15.8 J/g。淀粉碘复合物可见光吸收光谱的最大吸收波长为607nm,链淀粉相对含量为38.4%。花芸豆淀粉糊的抗剪切能力、凝沉性、冻融性和粘度等特性都与玉米淀粉较相近,糊丝长度小,为1.1 cm。加糖对淀粉凝胶的破裂强度及弹性模量的影响较大。 相似文献
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对绿豆淀粉和芸豆淀粉的颗粒形态及大小、溶解度、膨润力、透光率、糊化特性、老化特性等理化性质差异进行比较。结果表明:芸豆淀粉颗粒多呈椭圆形,粒径大小范围是17.89~28.80μm;绿豆淀粉颗粒呈现圆形或椭圆,形粒径大小范围是10.50~27.59μm;绿豆淀粉的膨润力、溶解度开始上升的温度较芸豆淀粉的早,并且芸豆淀粉的膨润力和溶解度在任意相同温度下都略小于绿豆淀粉;芸豆淀粉比绿豆淀粉的透明度先增加又随后降低,并且绿豆淀粉的透明度变化比较缓慢,而芸豆淀粉的透明度变化非常明显;绿豆淀粉比芸豆淀粉易于糊化;芸豆淀粉老化的速度高于绿豆淀粉。 相似文献
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芸豆淀粉理化特性研究 总被引:7,自引:6,他引:1
淀粉是芸豆中的主要碳水化合物,其性质直接影响芸豆资源的开发与利用.以花芸豆、小红芸豆、红芸豆、小黑芸豆和小白芸豆等菜豆属芸豆为试验材料,采用湿磨法提取淀粉,以马铃薯淀粉和玉米淀粉为对照,分析芸豆淀粉的颗粒特性与糊化特性.结果表明,5种芸豆淀粉颗粒形貌相似,大淀粉颗粒多为卵圆形或肾形,小颗粒多呈圆形,淀粉颗粒长轴粒径介于玉米淀粉和马铃薯淀粉之间.淀粉颗粒偏光十字多为较粗的“X”形或斜“十”形,较明显.芸豆淀粉溶解度和膨胀度均随温度升高而增大,属限制型膨胀淀粉.芸豆淀粉的透光度明显小于马铃薯淀粉,冻融稳定性不及玉米淀粉和马铃薯淀粉.芸豆淀粉起糊温度、峰值黏度、破损值、最终黏度和回生值分别为76.6 ~ 77.8℃、117.3 ~ 150.9 RVU、5.0 ~ 32.0 RVU、205.1 ~225.2 RVU和91.9~104.2 RVU.芸豆淀粉糊表现出好的热稳定性、抗剪切,易回生. 相似文献
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绿豆淀粉糊粘度性质的研究 总被引:8,自引:4,他引:8
用Viscograph-E型Brabender粘度计测定了绿豆淀粉糊在不同浓度、pH、糖、盐、明矾、硼砂条件下Brabender粘度曲线的变化情况,研究了其粘度性质及影响因素,为进一步了解绿豆淀粉的特性及开发其应用,提供淀粉科学方面的理论依据。 相似文献
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Parichat Phrukwiwattanakul Santad Wichienchotand 《International Journal of Food Properties》2013,16(9):1965-1976
The physico-chemical properties of starch from jackfruit seed and mung bean were investigated. Jackfruit seed starch had much higher resistant starch content (26.99%) than that of mung bean starch (4.04%). Furthermore, jackfruit seed starch had a higher gelatinization temperature (To) that required more gelatinization energy (ΔH) compared to mung bean starch. However, mung bean starch had higher amylose content and its granules were much larger than that of jackfruit seed starch. Mung bean starch had the highest peak viscosity, breakdown, and setback whereas jackfruit seed starch had the highest pasting temperature. Amylopectin chain length of mung bean starch contained higher proportion of short chains (degrees of polymerization 6–12) but lower proportion of very long chains (degrees of polymerization > 37 ) comparing with jackfruit seed starch. The X-ray diffraction patterns showed both starches to be Type-A crystallinity. In addition, both starch gels showed higher the storage modulus (G′) than the loss modulus (G?) designating as rubber like material. However, mung bean starch gel exhibited higher G’ and less tan δ than that of jackfruit seed starch indicating much stronger of gel structure. 相似文献
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中国小豆地方品种籽粒品质性状的评价 总被引:3,自引:0,他引:3
对来源于我国主产区小豆地方品种籽粒百粒重、种皮色泽、出沙率、淀粉含量及淀粉粒大小等品质性状进行了鉴定评价.结果表明:(1)我国小豆籽粒百粒重平均为11.63g,变幅5.28~24.47g;小豆淀粉粒几何平均值为57.71 μm,变幅46.21~83.46μm;红小豆粒色红度值(a^*)平均值为19.71,变幅13.0~26.0;黄度值(b^*)平均为9.58,变幅5.2~16.8;亮度值(L^*)平均为26.47,变幅为18.1~34.0;出沙率平均值为68.08%,变幅61.90%~75.98%.总淀粉含量平均为57.06%,变幅44.79%~67.44%;支链淀粉相对含量平均为82.24%,变幅62.61%~98.94%;所调查的8个籽粒品质性状品种间都存在显著差异.(2)筛选出一批优异地方品种可应用于生产和小豆品质育种. 相似文献
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Idrees A. Wani Dalbir S. Sogi Ali A. Wani Balmeet S. Gill Uma S. Shivhare 《International Journal of Food Science & Technology》2010,45(10):2176-2185
Starches isolated from four Kidney bean cultivars (French Yellow, Contender, Master Bean, Local Red) grown in temperate climate were studied for their physico‐chemical, morphological, thermal, pasting, textural and retrogradation properties. Physico‐chemical properties such as composition, amylose content, water absorption capacity, swelling power, syneresis, freeze–thaw stability and light transmittance showed significant differences among starches. Amylose content (36.4–41.7%) showed strong correlations with peak, trough, breakdown, final and setback viscosity, gel hardness, gumminess and chewiness. The starch granule morphology of these starches showed considerable variation when studied by scanning electron microscopy. Starch granules were observed to be round, irregular or elliptical with smooth surfaces. Master Bean starch granules were larger than those of other kidney bean starches. Pasting and textural properties of French Yellow starches were found to be higher than other kidney bean starches. Local Red starches showed the highest gelatinisation transition temperatures, whereas Master Bean starches showed the lowest transition temperatures. 相似文献
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发酵与发芽处理对绿豆淀粉黏度性质的影响 总被引:1,自引:0,他引:1
将绿豆进行发酵及发芽处理,研究不同处理对绿豆淀粉黏度的影响。采用快速黏度分析仪(RVA)测定了不同处理的绿豆淀粉糊化特性。结果表明自然发酵对绿豆淀粉黏度影响不大,只有峰值黏度略有下降:生物混合发酵可使样品的峰值黏度和热浆黏度均出现较大幅度的下降,最终黏度下降。绿豆发芽后提取的淀粉其黏度变化较大,其峰黏度上升1248.00mPa·s,热浆黏度上升698.00mPa·s,淀粉的黏度显著上升。 相似文献
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