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Evaluation of Physicochemical Properties of Defatted Rice Bran Protein Concentrate Obtained by Modified IP–EWT Process 改良IP-EWT法制备脱脂米糠浓缩蛋白的理化性质评价
IF 2.5 4区 农林科学 Q3 CHEMISTRY, APPLIED Pub Date : 2025-08-28 DOI: 10.1002/cche.70005
Keiko Ueda, Charin Techapun, Noppol Leksawasdi, Thanongsak Chaiyaso, Naomi Abe-Kanoh, Masanori Watanabe

Background and Objectives

The IP–EWT is a protein recovery and purification process that combined with isoelectric precipitation (IP) and electrolyzed water treatment (EWT) to produce highly nutritious, hypoallergenic protein from heat-stabilized defatted rice bran (HSDFRB). Here, we evaluated the physicochemical properties of HSDFRB protein concentrates obtained by modified IP–EWT in comparison with soybean protein, whey protein and casein.

Findings

The protein content and recovery rate of HSDFRB protein concentrates, with a maximum of 77.0 w/w% and 41.5%, were achieved using modified IP–EWT by changing NaOH concentration and isoelectric precipitation pH and removing phosphorus recovery process. The effects of pH on solubility, emulsion activity and stability, and foam capacity and stability, and the balance of oil absorption to water absorption of HSDFRB protein concentrates were similar to those of casein, rather than soy protein and whey protein, at pH values other than in acidic range.

Conclusions

HSDFRB protein concentrates concentrated by modified IP–EWT have similar physicochemical properties to casein at neutral and alkaline pH ranges.

Significance and Novelty

Here, we further concentrated HSDFRB protein concentrates by modifying IP–EWT and provided insights into their application in food products at neutral and alkaline pH ranges as a plant-based casein analogs.

背景和目的IP - EWT是一种蛋白质回收和纯化工艺,结合等电沉淀(IP)和电解水处理(EWT),从热稳定脱脂米糠(HSDFRB)中生产高营养、低过敏性的蛋白质。本研究通过与大豆蛋白、乳清蛋白和酪蛋白的比较,对经IP-EWT修饰的HSDFRB蛋白浓缩物的理化性质进行了评价。结果通过改变NaOH浓度、等电沉淀pH和除磷回收工艺,改性IP-EWT的HSDFRB蛋白浓缩物的蛋白质含量和回收率最高可达77.0 w/w%和41.5%。pH值对HSDFRB蛋白浓缩物的溶解度、乳状液活性和稳定性、泡沫容量和稳定性以及吸油吸水平衡的影响与酪蛋白相似,而与大豆蛋白和乳清蛋白不同。结论经IP-EWT修饰的HSDFRB蛋白浓缩物在中性和碱性范围内具有与酪蛋白相似的理化性质。在这里,我们通过修饰IP-EWT进一步浓缩了HSDFRB蛋白浓缩物,并为其在中性和碱性pH范围内作为植物性酪蛋白类似物在食品中的应用提供了见解。
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引用次数: 0
Vitamins Are Retained in Fortified Whole-Grain Maize Meal When Stored Under Tropical Conditions When Optimal Storage Practices Are Used 在热带条件下,当采用最佳储存方法时,强化全谷物玉米粉中的维生素得以保留
IF 2.5 4区 农林科学 Q3 CHEMISTRY, APPLIED Pub Date : 2025-08-22 DOI: 10.1002/cche.70006
John R. N. Taylor, Tilana Graaff, Johnes David, David Kamau, Darshana Joshi, Benjamin Byinshi, Corinda Erasmus, Peiman Milani, Henriëtte L. de Kock

Background and Objective

To ensure provision of essential micronutrients to at-risk maize-consuming populations, their stability in stored fortified whole-grain maize meal (FWGMM) is essential. Vitamin stability in commercial FWGMM was studied over 6 months under two real-world tropical conditions (overall average 25.3°C, 53.5% relative humidity (RH) and 19.4°C, 66.5% RH) in grain stores. The maize was pre-dried before milling and optimal storage practices were employed.

Findings

No loss in Vitamin A (retinol palmitate), B1 and B2 (total and endogenous) occurred, contrary to other fortified maize meal storage studies without pre-drying and/or using suboptimal storage practices. Alternative treatments to maize pre-drying were investigated in an accelerated storage study at 40°C, 65% RH using similar storage practices. There was no loss in Vitamins B1 and B2 (total and endogenous) with any treatment including the not pre-dried maize control.

Conclusions

The vitamin stability in FWGMM during storage is attributable primarily to the use of a polyethylene inner liner in the sacks which largely prevented moisture ingress and to storage in semidarkness which prevented vitamin photodegradation. Maize pre-drying provides additional assurance against moisture-induced degradation.

Significance and Novelty

These simple practices can help provide the full benefit of micronutrient-fortified WGMM to consumers.

背景与目的为了确保向高危玉米消费人群提供必需微量营养素,其在储存强化全谷物玉米粉(FWGMM)中的稳定性至关重要。在两个真实的热带条件下(总体平均25.3°C,相对湿度(RH)为53.5%)和19.4°C,相对湿度为66.5%),研究了商用FWGMM在6个月内的维生素稳定性。玉米在制粉前进行预干燥,并采用最佳贮藏方法。与其他没有预干燥和/或使用次优储存方法的强化玉米粉储存研究相反,没有发生维生素A(视黄醇棕榈酸酯)、B1和B2(总和内源性)的损失。在40°C, 65% RH的加速贮藏条件下,研究了玉米预干燥的替代处理方法。包括未干玉米对照在内的任何处理均未造成维生素B1和B2(总维生素和内源维生素)的损失。结论冬青在贮藏过程中维生素的稳定性主要是由于袋中使用了聚乙烯衬里,这在很大程度上防止了水分的进入,并且在半黑暗的环境中贮藏,防止了维生素的光降解。玉米预干燥为防止水分引起的退化提供了额外的保证。意义和新颖性这些简单的做法可以帮助消费者充分利用微量营养素强化的白藜芦酸。
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引用次数: 0
The Assessment of In Vitro Protein Digestibility and Quality on Mechanically Scoured and Moisture Conditioned Navy Beans (Phaseolus vulgaris) and Chickpeas (Cicer arietinum) Subject to Roller-Milling 机械洗湿海军豆(Phaseolus vulgaris)和鹰嘴豆(Cicer arietinum)滚磨蛋白质体外消化率和品质评价
IF 2.5 4区 农林科学 Q3 CHEMISTRY, APPLIED Pub Date : 2025-08-17 DOI: 10.1002/cche.70003
Adam J. Franczyk, Nguyen Bui, Jiayi Chen, Lindsey Boyd, Ning Wang, Elaine Sopiwnyk, Ashok Sarkar, Jason Neufeld, Jitendra Paliwal, Michael Nickerson, James D. House

Background and Objectives

Roller-milling practices for pulses to establish potential end-use applications are required. Scouring and moisture conditioning may improve milling efficiency and hull removal, in addition to influencing nutritional quality. In this study, the extent of these conditions on the protein digestibility and quality are evaluated in vitro on navy beans and chickpeas.

Findings

Scouring with no additional moisture conditioning increased protein quality in both navy beans and chickpeas, whereas the addition of 1% moisture conditioning in combination with scouring was detrimental to protein quality. Moisture conditioning at 0.5% without scouring also decreased protein quality in navy beans. Changes in protein quality were primarily due to compositional changes in both protein and amino acid content, reflected in amino acid scoring. Sulfur amino acids were the sole limiting amino acids in navy beans, while tryptophan was the sole limiting amino acid in chickpeas, irrespective of the roller-milled flour stream or Pretreatment.

Conclusion

Scouring with no added moisture conditioning effectively improves the protein quality in both navy beans and Kabuli chickpeas due to changes in their amino acid scoring pattern.

Significance and Novelty

Balancing milling practices and nutritional quality is important in developing navy bean and Kabuli chickpea products.

背景和目的为建立潜在的最终用途的脉冲辊磨实践是必要的。除影响营养品质外,精练和水分调节可提高研磨效率和去壳率。在体外试验中,研究了这些条件对海军豆和鹰嘴豆蛋白质消化率和品质的影响程度。结果不加水分调理的精练提高了海军豆和鹰嘴豆的蛋白质质量,而加1%水分调理的精练对蛋白质质量不利。在不冲刷的情况下,0.5%的水分调节也降低了海军蓝豆的蛋白质质量。蛋白质品质的变化主要是由于蛋白质和氨基酸含量的组成变化,反映在氨基酸评分上。无论辊磨工艺还是预处理工艺,硫氨基酸是海军豆中唯一的限制性氨基酸,而色氨酸是鹰嘴豆中唯一的限制性氨基酸。结论在不添加水分调理的条件下,通过改变水墨豆和喀布尔鹰嘴豆的氨基酸评分模式,可以有效地改善其蛋白质品质。平衡加工工艺和营养品质对开发海军豆和喀布尔鹰嘴豆具有重要意义。
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引用次数: 0
Effect of Milling on the Functional Properties of Rice Bran Protein Isolates of Long-Grain Cultivars and Their Utilization in Gluten-Free Muffins Production 碾磨对长粒品种米糠分离蛋白功能特性的影响及其在无麸松饼生产中的应用
IF 2.5 4区 农林科学 Q3 CHEMISTRY, APPLIED Pub Date : 2025-08-13 DOI: 10.1002/cche.70000
Amandeep Kaur, Raj Sukhwinder Singh Kaler, Amardeep Singh Virdi, Narpinder Singh

Background and Objectives

Assessing the functional properties of proteins is essential for effective use of newly discovered protein-rich materials. There has been a lack of information regarding the influence of degree of milling (DoM) on the functionality of rice bran protein isolates (RBPIs) from bran of long grain indica rice cultivars (PUSA1121 and PR111). Hence, the study was designed to investigate the proximate composition, functional properties, protein profiling, and secondary structure of RBPIs. Moreover, the potential application of PIs derived from both cultivars for the preparation of starch based gluten free (GF) muffin was studied.

Findings

Both cultivar and DoM significantly influence the functional properties of RBPIs and their suitability for muffin formulation. A notable change in secondary structure of RBPIs with extended DoM due to the inclusion of endosperm-specific proteins in rice bran was observed. Starch-based muffins enriched with RBPIs from both cultivars showed desirable texture and sensory attributes. Crust color and physical traits of GF muffins were influenced by cultivar, DoM, and PC. RBPIs of PUSA1121 at 8% DoM yielded muffins with the most desirable textural and sensory properties.

Conclusion

Both cultivars and the varying DoM have substantial impact on the protein quality and functional properties of RBPIs. The study demonstrated the promising potential of RBPIs as functional food ingredients, with implications for enhancing nutritional and textural attributes of GF muffins and potentially baked other.

Significance and Novelty

This study highlights the innovative use of RBPIs from two cultivars and DoM in starch-based muffins, demonstrating their functional potential in baked products. The inclusion of RBPIs improved both sensory appeal and overall product quality, demonstrating their potential as an economical plant protein source for bakery formulations.

背景与目的评价蛋白质的功能特性是有效利用新发现的富含蛋白质材料的必要条件。关于碾磨度(DoM)对长粒籼稻品种(PUSA1121和PR111)米糠蛋白分离物(rbpi)功能的影响,目前还缺乏相关信息。因此,本研究旨在研究rbpi的近似组成、功能特性、蛋白质谱和二级结构。此外,还研究了这两个品种衍生的pi在制备淀粉基无麸质松饼中的潜在应用。发现品种和DoM对rbpi的功能特性及其在松饼配方中的适用性有显著影响。由于在米糠中包含了胚乳特异性蛋白,具有扩展DoM的rbpi的二级结构发生了显著变化。富含两种rbpi的淀粉基松饼具有良好的质地和感官特性。GF松饼的皮色和物理性状受品种、DoM和PC的影响。在8% DoM下,PUSA1121的rbpi得到的松饼具有最理想的质地和感官特性。结论不同品种和不同DoM对rbpi的蛋白质品质和功能特性有显著影响。该研究表明rbpi作为功能性食品配料具有很大的潜力,可以提高GF松饼和其他烘焙食品的营养和质地。本研究重点介绍了两个品种的rbpi和DoM在淀粉基松饼中的创新应用,展示了它们在烘焙产品中的功能潜力。rbpi的加入提高了感官吸引力和整体产品质量,证明了它们作为面包房配方中经济的植物蛋白来源的潜力。
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引用次数: 0
Unveiling the Differences in GABA Enrichment Capacity and Metabolite Profiles of Two Genotypes of Red Kidney Beans (Phaseolus vulgaris L.) Under Heat and Relative Humidity Treatment 揭示两种基因型红芸豆GABA富集能力及代谢物谱的差异在高温和相对湿度处理下
IF 2.5 4区 农林科学 Q3 CHEMISTRY, APPLIED Pub Date : 2025-07-30 DOI: 10.1002/cche.10897
Linlin Fan, Jiani Zhao, Aijinxiu Ma, Ting Bai, Li Wang, Yuanlin Sun, Rui Liu, Sumei Zhou, Dianzhi Hou

Background and Objectives

Kidney beans can serve as a potential source of γ-aminobutyric acid (GABA), but their enrichment capacity varies across varieties. This study investigated the effects of heat and relative humidity (HRH) treatment on GABA accumulation in two kidney bean varieties (JZY-2 and PJY-4).

Findings

HRH treatment significantly enhanced the GABA contents in both varieties, with JZY-2 showing a greater enrichment capacity. The increase in GABA was associated with the elevated activities of key enzymes (DAO, PAO, and GAD) and reductions in the levels of glutamic acid, asparagine, and aspartic acid. Nontargeted metabolomic profiling revealed significant changes in metabolite composition after HRH treatment, particularly involving the flavonoid biosynthesis pathway based on KEGG analysis.

Conclusions

HRH is an effective strategy to increase GABA content in kidney beans, especially in JZY-2.

Significance and Novelty

This study might provide the reference for the screening of excellent GABA-enriched kidney bean varieties under HRH treatment, which contributed to developing GABA-rich functional foods.

芸豆可以作为γ-氨基丁酸(GABA)的潜在来源,但其富集能力因品种而异。研究了高温和相对湿度(HRH)处理对两个芸豆品种(JZY-2和PJY-4) GABA积累的影响。结果HRH处理显著提高了两个品种的GABA含量,其中JZY-2的富集能力更强。GABA的增加与关键酶(DAO、PAO和GAD)活性的升高以及谷氨酸、天冬酰胺和天冬氨酸水平的降低有关。非靶向代谢组学分析显示,HRH治疗后代谢物组成发生了显著变化,特别是基于KEGG分析的类黄酮生物合成途径。结论HRH是提高芸豆中GABA含量的有效策略,尤其是JZY-2。本研究可为筛选HRH处理下富含gaba的芸豆优良品种提供参考,有助于开发富含gaba的功能食品。
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引用次数: 0
Phenolic Composition and Arabinoxylan Characterization of Pearled Barley Fractions 珍珠大麦馏分的酚类成分及阿拉伯木聚糖表征
IF 2.5 4区 农林科学 Q3 CHEMISTRY, APPLIED Pub Date : 2025-07-26 DOI: 10.1002/cche.70002
Pamela Drawbridge, Daniela D. Herrera-Balandrano, Trust Beta

Background and Objectives

Two hulless barley varieties (Peru-35 and Roseland) were pearled into six fractions and analyzed for primary phenolic acids via HPLC, along with the arabinoxylan content and degree of substitution (arabinose to xylose (A/X) ratio) using gas chromatography. The distribution of the newly identified polyamine, N1,N8-dicaffeoyl spermidine, in these barley varieties was reported.

Findings

The concentrations of ferulic and p-coumaric acids in both varieties were highest in the outermost fraction and decreased progressively toward the endosperm fraction. The relative abundance of N1,N8-dicaffeoyl spermidine was uniformly distributed among the intermediary fractions, with the highest levels observed in the aleurone-containing fraction (F5) of Peru-35 and in the pericarp-containing fraction (F2) of Roseland. The arabinoxylan content decreased from the outer to inner fractions of the grains and was positively correlated with bound phenolic acid content.

Conclusions

This study provides insights into the distribution of phenolic acids and arabinoxylan content in pearled hulless barley fractions, contributing to the advancement of fortified food products.

Significance and Novelty

The distribution of N1,N8-dicaffeoyl spermidine in barley is reported for the first time. This study elucidates the composition of pearled hulless barley fractions, enabling selection for functional food development based on the desired bioactive components.

背景与目的将两种无壳大麦(秘鲁-35和罗斯兰)分离成6个组分,采用高效液相色谱法分析其主要酚酸含量,并采用气相色谱法分析其阿拉伯木聚糖含量和取代度(阿拉伯糖与木糖(A/X)比)。报道了新鉴定的多胺N1, n8 -二咖啡因酰亚精胺在这些大麦品种中的分布。结果阿魏酸和对香豆酸含量均以最外层部位最高,向胚乳部位逐渐降低。N1, n8 -二咖啡酰基亚精胺的相对丰度在中间组分中分布均匀,其中秘鲁-35的含糊粉组分(F5)和罗斯兰的含果皮组分(F2)的相对丰度最高。阿拉伯木聚糖含量由外向内递减,与结合酚酸含量呈正相关。结论本研究揭示了珠光大麦籽粒中酚酸和阿拉伯木聚糖含量的分布规律,有助于强化食品的发展。本文首次报道了大麦中N1, n8 -二咖啡因酰亚精胺的分布。本研究阐明了珠光无壳大麦馏分的组成,使基于所需生物活性成分的功能食品开发选择成为可能。
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引用次数: 0
Characterization of Flours Derived from Lentils, Quinoa, and Black-Eyed Beans: Investigating Key Physicochemical, Nutritional, and Techno-Functional Properties 从扁豆、藜麦和黑眼豆中提取的面粉的特性:研究关键的物理化学、营养和技术功能特性
IF 2.5 4区 农林科学 Q3 CHEMISTRY, APPLIED Pub Date : 2025-07-22 DOI: 10.1002/cche.10896
Evans Otoo, Alberta N. A. Aryee

Background and Objectives

The high cost and limited availability of ingredients for formulating ready-to-use therapeutic food (RUTF) hinder access in areas with high malnutrition. This study aims to evaluate the physicochemical, nutritional, and techno-functional properties of green lentil, black-eyed bean, and white quinoa flours for RUTF formulation.

Findings

Green lentil flour (GLF) exhibited the highest protein and lipid content, while macrominerals (Ca, P, K, Mg, S) were higher in white quinoa (WQF) and black-eyed beans flour (BBF). GLF showed the highest tannin and lowest phytic acid content. Trypsin inhibitor activity did not differ significantly among the flours and in vitro protein digestibility was highest in WQF. In WQF, lysine was the limiting amino acid in young children, leucine in older children, and methionine + cysteine in both GLF and BBF. All flours had an iso-electric point of pH 4. WQF showed a significantly higher oil absorption, foaming, and emulsifying capacity compared to the other flours. No significant differences were observed in the thermal properties of flours, though BBF had higher enthalpy of gelatinization. Scanning electron microscopy coupled to energy dispersive X-ray spectrometry revealed distinct morphological features and mineral distribution across the three flours, while PCA facilitated the identification of relationships between the flours.

Conclusions

The end-user quality attributes of the flours supports diverse applications, with potential for further modifications to meet specific product requirements, particularly in the formulation of RUTF.

Significance and Novelty

Our findings highlight the potential of locally available alternative flour ingredients for tailored food application such as RUTF development, lower formulation costs, enhance accessibility, and benefit children with severe acute malnutrition.

背景和目的配制即食治疗食品的原料成本高且供应有限,阻碍了高营养不良地区的获取。本研究旨在评价绿扁豆、黑眼豆和白藜麦面粉在RUTF配方中的理化、营养和技术功能特性。结果绿扁豆粉(GLF)的蛋白质和脂肪含量最高,白藜麦粉(WQF)和黑眼豆粉(BBF)的大量矿物质(Ca、P、K、Mg、S)含量较高。GLF单宁含量最高,植酸含量最低。不同面粉中胰蛋白酶抑制剂活性差异不显著,WQF的体外蛋白质消化率最高。在WQF中,赖氨酸是幼儿的限制氨基酸,亮氨酸是大龄儿童的限制氨基酸,蛋氨酸+半胱氨酸是GLF和BBF的限制氨基酸。所有面粉的等电点都是pH值4。与其他面粉相比,WQF具有显著更高的吸油、发泡和乳化能力。虽然BBF具有较高的糊化焓,但在面粉的热性能方面没有观察到显着差异。扫描电镜和能量色散x射线光谱分析显示了三种面粉的不同形态特征和矿物分布,而主成分分析有助于识别面粉之间的关系。面粉的最终用户质量属性支持不同的应用,有可能进一步修改以满足特定的产品要求,特别是在RUTF的配方中。我们的研究结果强调了当地可获得的替代面粉成分在定制食品应用方面的潜力,如RUTF开发,降低配方成本,提高可及性,并使严重急性营养不良儿童受益。
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引用次数: 0
Exploring Sainfoin (Onobrychis viciifolia) Seed Flour as a Sustainable Plant-Based Food: Germination-Induced Changes in Nutritional Quality, Anti-Nutritional Factors, Phenolic Content, Bioaccessibility, and In Vitro Toxicity 探索红豆素(Onobrychis viciifolia)种子粉作为可持续的植物性食品:发芽诱导的营养品质、抗营养因子、酚含量、生物可及性和体外毒性的变化
IF 2.2 4区 农林科学 Q3 CHEMISTRY, APPLIED Pub Date : 2025-07-04 DOI: 10.1002/cche.10895
Havva Polat Kaya, Sevde Nur Güngör, Neşe Yılmaz Tuncel, Fatma Betül Sakarya, Ali Emre Andaç, Gülay Özkan, Esra Capanoglu, Şükrü Güleç, Mehmet Çağlar Tülbek, Necati Barış Tuncel

Background and Objectives

Sainfoin is a drought-resistant perennial plant mainly used as animal feed, but its seeds remain underexplored as a food source. This study investigates the effects of germination on the nutritional quality of dehulled sainfoin seeds. Specifically, it examines changes in proximate composition, antinutrients (hydrocyanic acid, tannins, phytates, saponins, and trypsin inhibitors), in vitro starch digestibility, phenolic content, antioxidant capacity, and cytotoxicity.

Findings

Germination significantly increased crude protein (up to 45%) and fat (up to 10%) contents. Despite low total starch (~7%), 45-h germination reduced total digestible starch while increasing rapidly digestible starch. Antinutrient levels decreased significantly—tannins by 57%, phytates by 30%, saponins by 40%, and trypsin inhibitors by 29%—with the exception of hydrocyanic acid. Although total phenolics, flavonoids, and antioxidant capacity declined, their bioaccessibility improved. No cytotoxic effects were observed in either raw or germinated seeds.

Conclusions

Germination improved the nutritional profile of sainfoin seeds by increasing protein and fat contents, while reducing most antinutrients. Despite a decrease in antioxidant levels, their bioaccessibility was enhanched. The absence of cytotoxic effects further supports the potential application of germinated sainfoin seeds in human nutrition.

Significance and Novelty

Although few studies have focused on the green form of sainfoin, which is commonly used as livestock feed, this study reveals that sainfoin seeds offer substantial potential as food, with germination emerging as a simple and effective approach to improving their nutritional properties.

红枫是一种抗旱多年生植物,主要用作动物饲料,但其种子作为食物来源尚未得到充分开发。本研究探讨了脱皮红豆种子萌发对其营养品质的影响。具体地说,它检查了近似组成、抗营养素(氢氰酸、单宁、植酸、皂苷和胰蛋白酶抑制剂)、体外淀粉消化率、酚含量、抗氧化能力和细胞毒性的变化。结果萌发显著提高了粗蛋白质(45%)和脂肪(10%)含量。尽管总淀粉含量较低(约7%),但45 h的萌发降低了总可消化淀粉,同时增加了快速可消化淀粉。除氢氰酸外,抗营养素水平显著下降,单宁降低57%,植酸降低30%,皂苷降低40%,胰蛋白酶抑制剂降低29%。虽然总酚类、总黄酮和抗氧化能力下降,但其生物可及性提高。未处理种子和发芽种子均未见细胞毒性作用。结论萌发通过增加红豆素种子的蛋白质和脂肪含量,降低大部分抗营养成分,改善了红豆素种子的营养状况。尽管抗氧化水平降低,但其生物可及性增强。没有细胞毒性作用进一步支持发芽红豆素种子在人类营养中的潜在应用。虽然很少有研究关注红豆素的绿色形式,它通常被用作牲畜饲料,但这项研究表明,红豆素种子作为食物具有巨大的潜力,发芽是一种简单而有效的改善其营养特性的方法。
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引用次数: 0
Evaluating the Impact of Flour Protein Content on the Quality of Wholegrain Refrigerated Dough 面粉蛋白质含量对全麦冷藏面团品质影响的评价
IF 2.2 4区 农林科学 Q3 CHEMISTRY, APPLIED Pub Date : 2025-06-17 DOI: 10.1002/cche.10894
Maneka Malalgoda, Reyna Stefanson, Indhurathna Swaminathan, Anashwar Valsalan, Lovemore Nkhata Malunga, Isabella Gonzalez Garcia

Background and Objectives

Refrigerated dough products offer convenience, but are often produced using refined flour. However, wholewheat flour-based products provide health benefits by increasing dietary fiber intake. This study aims to determine the optimal flour protein content for developing clean label refrigerated dough using wholegrain Canada Western Red Spring (CWRS) wheat. Three CWRS wheat samples with varying protein contents: Sample 1–Average Protein (S1-AP) (13.30%), Sample 2—Intermediate High Protein (S2-IHP) (14.91%), and Sample 3—High Protein (S3-HP) (16.48%), were analyzed. The proximate composition of wholegrain flour samples was determined using standard methods. Dough mixing and starch pasting properties were evaluated using micro-dough LAB and RVA, respectively. Dough samples were prepared and stored at 4°C for 35 days, with subsets baked and assessed for end-use quality every 7 days. Xylanase activity and dough syruping were monitored throughout storage.

Findings

S3-HP exhibited reduced starch pasting properties, shorter dough development time, and lower stability. S2-IHP demonstrated better mixing stability and lower mixing tolerance index, indicating superior dough handling properties. Xylanase activity was highest in S1-AP at 35 days and lowest in S2-IHP. Dough syruping increased significantly during the first 14 days and stabilized thereafter. Bread quality declined with storage, with volume decreasing and firmness increasing, especially in S1-AP. Lightness (L*) decreased over time in all samples.

Conclusions

S2-IHP, which showed intermediate/moderately high protein content, was identified as the most suitable for wholegrain refrigerated dough, as it maintained superior end-use quality characteristics compared to the other samples.

Significance and Novelty

This study provides insights into the impact of flour protein content on the functionality and storage stability of wholegrain refrigerated dough, aiding in the development of clean label products with improved quality and processing characteristics.

背景和目的冷藏面团产品提供了方便,但通常使用精制面粉生产。然而,以全麦面粉为基础的产品通过增加膳食纤维的摄入量而对健康有益。本研究旨在确定以加拿大西部红泉(CWRS)全麦小麦为原料制作清洁标签冷藏面团所需的最佳面粉蛋白质含量。分析了3个不同蛋白质含量的CWRS小麦样品:样品1-平均蛋白(S1-AP)(13.30%)、样品2-中高蛋白(S2-IHP)(14.91%)和样品3-高蛋白(S3-HP)(16.48%)。采用标准方法测定了全谷物面粉样品的近似成分。用微面团LAB和RVA分别评价了面团的混合性能和淀粉糊化性能。面团样品制备并在4°C下保存35天,每7天烘烤一次并评估最终使用质量。在整个贮藏过程中监测木聚糖酶活性和面团糖浆化情况。结果:S3-HP淀粉糊化性能降低,面团发育时间缩短,稳定性降低。S2-IHP具有较好的混合稳定性和较低的混合容忍指数,表明其具有优越的面团处理性能。35 d时,S1-AP组木聚糖酶活性最高,S2-IHP组最低。面团糖浆化在前14天显著增加,之后趋于稳定。面包品质随贮藏时间的增加而下降,体积减小,硬度增加,尤其是S1-AP。所有样品的亮度(L*)随着时间的推移而降低。结论S2-IHP蛋白含量为中高/中高,与其他样品相比,具有优越的最终使用品质特征,最适合全谷物冷藏面团。本研究揭示了面粉蛋白质含量对全麦冷藏面团的功能和储存稳定性的影响,有助于开发具有更高质量和加工特性的清洁标签产品。
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引用次数: 0
Influence of an Industrial Germination and Drying Process on the Physicochemical and Enzymatic Characteristics of Malting Barley 工业萌发和干燥过程对麦芽理化和酶特性的影响
IF 2.2 4区 农林科学 Q3 CHEMISTRY, APPLIED Pub Date : 2025-06-11 DOI: 10.1002/cche.10893
Lúcia Gabriela Cavalet, João Pizzatto, Dianini Kringel Lang, João Ayres Lemos, Janaína Fischer, Luciane Maria Colla

Background and Objectives

The malting process aims to induce physical, chemical, structural, and morphological changes in barley grains. This involves three stages: steeping, germination, and drying. The conditions during germination and drying, including temperature and time, affect hydrolytic enzyme activity, storage protein and starch composition, and ultimately, malt quality. This study assessed how various parameters during germination and drying in an industrial setting impact malted barley characteristics in an industrial environment on the characteristics of malted barley grains.

Findings

Results showed variations in grain homogenization, temperature, and moisture conditions. Germination and drying times, along with sampling points, influenced malted barley characteristics. A 48-h germination period exhibited the highest enzymatic activity, leading to observed changes in chemical composition and paste properties.

Conclusion

Thus, the results of this study demonstrated that there are differences between germination batches, related to physicochemical, amylase, and paste properties, which result from the specificities of the cultivars that composed each batch.

Significance and Novelty

This study evaluates key parameters in barley malt production, advancing processing and control techniques for precise, consistent malting. It involves developing automated systems to monitor temperature, humidity, and time during germination and drying, ensuring high-quality final products.

背景与目的麦芽加工过程旨在诱导大麦籽粒的物理、化学、结构和形态变化。这包括三个阶段:浸泡、发芽和干燥。发芽和干燥的条件,包括温度和时间,会影响水解酶的活性、储存蛋白质和淀粉的组成,最终影响麦芽的品质。本研究评估了工业环境下萌发和干燥过程中的各种参数如何影响工业环境下麦芽特性对大麦籽粒特性的影响。结果表明,籽粒均质性、温度和湿度条件存在差异。发芽和干燥时间,以及采样点,影响了麦芽的特性。在萌发48h时,酶活性最高,导致其化学成分和糊状特性发生变化。因此,本研究结果表明,不同发芽批次之间存在着与理化、淀粉酶和糊状性质有关的差异,这是由组成批次的品种的特殊性造成的。本研究评估了大麦麦芽生产中的关键参数,提出了精确、一致的麦芽加工和控制技术。它包括开发自动化系统来监测发芽和干燥过程中的温度、湿度和时间,以确保最终产品的高质量。
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引用次数: 0
期刊
Cereal Chemistry
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