Effect of β-Glucanase on the Texture and Flavor Compounds of Highland Barley Bread
-
摘要: 本研究考察β-葡聚糖酶(Beta-glucanase,BGS)对青稞面包比容、质构特性的改良作用及其对面包中挥发性风味物质的影响。通过分析不同浓度BGS(0.02%~0.10%)作用下30%和50%青稞全粉添加量的面包比容、质构、气孔结构、内部色泽及感官评价,考察BGS对面包质构特性的影响,同时采用气相色谱-离子迁移谱分析面包中挥发性风味物质的差异。结果表明,面包的比容、弹性、气孔数随BGS浓度的升高显著增加(P<0.05)。当BGS添加量为0.10%时,30%青稞面包比容与白面包(3.83 mL/g)接近,达到3.46 mL/g;同时,30%和50%青稞面包弹性分别提高了10.36%和43.57%。青稞面包芯部主要挥发性风味物质为酯类、醛类、醇类、酮类和酸类,50%青稞面包酯类、酮类风味物质相对含量高于30%青稞面包,果香味、青草香、花香等青稞特征性香气更为突出。BGS对面包挥发性风味物质组成影响较小,但BGS可提高正己醇、苯甲醛、乙酸乙酯等挥发性风味物质的相对含量,增强青稞面包的果香味。Abstract: This study investigated the improvement effects of beta-glucanase (BGS) on the specific volume, texture, and volatile flavor compounds of bread prepared with 30% and 50% whole highland barley flour. The changes in specific volume, texture, crumb structure and color, and sensory while the BGS levels ranging from 0.02% to 0.10% were analyzed. The volatile flavor compounds in highland barley bread were tested by gas chromatography-ion mobility spectrometry. The results showed that the specific volume, elasticity, and gas cell numbers of highland barley bread all improved significantly (P<0.05) with increasing BGS concentration. When BGS was added at 0.10%, the specific volume of 30% highland barley bread reached up to 3.46 mL/g, close to that of the white bread (3.83 mL/g). Meanwhile, the elasticity of 30% and 50% highland barley bread increased by 10.36% and 43.57%, respectively. The main volatile flavor compounds in the bread core were esters, aldehydes, alcohols, ketones, and acids. The relative content of esters and ketones in 50% barley bread was higher than that in 30% barley bread, and the characteristic aromas of highland barley with fruit flavor, grass flavor, and flower flavor were more prominent. The effects of BGS on the composition of volatile flavor compounds of bread were unobvious. However, it could increase the relative contents of volatile flavor compounds such as n-hexanol, benzaldehyde, and ethyl acetate, and enhance the fruit flavor of highland barley bread.
-
Key words:
- β-glucanase /
- whole highland barley flour /
- bread /
- texture /
- volatile flavor compounds
-
图 1 β-葡聚糖酶对青稞面包比容的影响
注:同种青稞面包中不同字母表示差异显著(P<0.05);图4同。
Figure 1. Effect of β-glucanase on the specific volume of highland barley bread
表 1 青稞面包感官评价标准
Table 1. Criteria for sensory evaluation of highland barley bread
评价项目(分值) 评价标准 分值 外观结构(10分) 外观光滑饱满,表皮色泽均匀 8~10 外观不饱满,变形严重,表皮色泽差 0~7 弹性(15分) 弹性好,回复性好 11~15 有一定的弹性,回复性一般 6~10 弹性不佳,回复性差 0~5 面包芯结构(15分) 组织细腻,气孔均匀细密 11~15 组织结构一般,有少许大孔洞 6~10 组织粗糙,气孔不均匀,有较多大孔洞 0~5 面包芯色泽(10分) 色泽均一 8~10 色泽不均一,有不均匀的棕色 0~7 风味(15分) 有正常面包和杂粮香味,无酸味异味 11~15 有一定的面包和杂粮香味,无其他异味 6~10 无正常面包和杂粮香味,有异味 0~5 口感(20分) 柔软细腻,无粘牙感,淡发酵香甜味 16~20 柔软略粗糙,稍粘牙,略酸或一定异味 10~15 紧实粗糙,十分粘牙,过酸或异味过重 0~9 接受度(15分) 易接受 10~15 基本接受 6~9 难接受 0~5 表 2 β-葡聚糖酶对青稞面包质构特性的影响
Table 2. Effect of β-glucanase on the texture properties of highland barley bread
组别 加酶量
(%)硬度(g) 粘性(g·sec) 弹性(%) 咀嚼性 白面包 − 124.08±8.99 −0.26±0.89 94.63±3.37 84.08±13.30 30%青稞
面包0.00 584.53±5.70a −5.49±0.09e 82.98±0.14e 374.02±6.48a 0.02 338.32±5.20b −2.42±0.07d 84.15±1.03de 136.55±4.73b 0.04 242.86±5.28c −0.73±0.10c 85.88±1.15cd 127.29±4.89b 0.06 237.97±5.76c −0.57±0.09b 87.10±1.26bc 115.12±4.25c 0.08 207.70±2.78d −0.28±0.04a 89.67±0.53b 94.45±4.14d 0.10 199.49±4.48d −0.23±0.05a 91.58±1.02a 86.03±3.23d 50%青稞
面包0.00 904.02±5.44a −8.28±1.04e 56.26±0.81e 486.89±5.26a 0.02 864.30±6.73b −6.87±0.70d 62.94±0.98d 284.91±4.74b 0.04 759.16±7.32c −6.13±0.51cd 66.09±1.17c 238.48±4.21c 0.06 657.11±4.97d −5.29±0.0.31bc 72.22±1.77b 200.98±5.26d 0.08 535.26±5.33e −4.37±0.37b 78.20±1.54a 170.91±4.93e 0.10 462.78±4.82f −2.72±0.15a 80.77±1.98a 142.59±4.73f 注:同一列同种青稞面包中不同字母表示差异显著(P<0.05);表3~表4同。 表 3 β-葡聚糖酶对青稞面包气孔结构的影响
Table 3. Effect of β-glucanase on the crumb structure of highland barley bread
组别 加酶量(%) 单位面积(mm2)气孔数 气孔直径(mm) 孔壁厚度(mm) 气孔面积占比(%) 白面包 − 1.50±0.12 2.01±0.27 0.44±0.02 51.20±0.89 30%青稞面包 0.00 1.37±0.09c 1.70±0.12c 0.44±0.01b 48.10±0.62c 0.02 1.59±0.11b 2.00±0.17bc 0.46±0.01ab 50.63±1.10b 0.04 1.82±0.06a 2.18±0.09bc 0.48±0.01a 51.90±0.60ab 0.06 1.79±0.11a 2.20±0.09bc 0.48±0.01a 51.73±0.61ab 0.08 1.84±0.12a 2.22±0.14a 0.48±0.01a 52.00±0.44a 0.10 1.60±0.09b 1.94±0.14bc 0.45±0.01b 50.67±0.55ab 50%青稞面包 0.00 1.32±0.08d 1.66±0.06d 0.43±0.01d 49.27±0.32c 0.02 1.42±0.03cd 1.71±0.02d 0.45±0.01bc 50.43±0.23b 0.04 1.46±0.02c 1.86±0.03c 0.43±0.00cd 51.00±0.36b 0.06 1.58±0.03b 2.10±0.02b 0.46±0.01ab 50.97±0.21b 0.08 1.73±0.10a 2.23±0.12a 0.47±0.01a 51.87±0.70a 0.10 1.65±0.04ab 1.97±0.05c 0.46±0.01ab 50.77±0.12b 表 4 β-葡聚糖酶对青稞面包芯色泽的影响
Table 4. Effect of β-glucanase on the color parameters of highland barley bread
组别 加酶量(%) 色泽 L* a* b* 白面包 − 85.75±0.57 5.64±0.36 22.68±0.96 30%青稞面包 0.00 69.00±0.73b 6.71±0.20a 20.73±0.31c 0.02 71.35±1.15a 6.26±0.06c 21.57±0.18b 0.04 71.27±0.65a 6.46±0.15bc 21.85±0.38ab 0.06 71.49±1.17a 6.57±0.13ab 21.87±0.16ab 0.08 70.54±0.64a 6.50±0.07b 22.01±0.15a 0.10 71.31±0.72a 6.53±0.04ab 22.16±0.21a 50%青稞面包 0.00 66.38±0.57a 7.56±0.09e 21.92±0.12e 0.02 66.69±1.41a 8.09±0.08d 23.56±0.05d 0.04 66.59±0.48a 8.36±0.05c 24.94±0.06c 0.06 67.27±0.36a 8.68±0.04b 25.60±0.13b 0.08 66.70±0.28a 8.64±0.07b 25.73±0.18b 0.10 66.78±0.06a 8.92±0.09a 26.48±0.18a 表 5 青稞面包中挥发性风味物质的相对含量
Table 5. Relative content of volatile flavor compounds in highland barley bread
种类 化合物 风味描述[30, 32,34-35] 化合物相对含量(%) 白面包 30%青稞面包 50%青稞面包 0.00% 0.04% 0.10% 0.00% 0.04% 0.10% 醇类 3-甲基丁醇 酒味、发酵味、果香 14.21 11.39 12.312 11.654 9.437 8.64 9.601 2-甲基-1-丙醇 酒香味 12.176 9.714 10.451 9.998 8.232 7.547 8.39 乙醇 酒香味 11.467 9.073 9.748 9.204 7.563 7.155 8.133 丙醇* 酒味、发酵味 4.253 2.112 2.448 2.466 0.926 0.964 1.534 正己醇* 青草香、果香、甜香 1.69 1.237 1.522 1.445 0.954 0.806 1.139 正戊醇* 果香、酒香味 1.125 0.92 1.032 0.962 0.821 0.655 0.851 丁醇* 酒香味 0.83 0.592 0.662 0.563 0.701 0.462 0.573 甲醇 − 0.445 0.329 0.352 0.312 0.219 0.196 0.254 1-戊烯-3-醇 特殊的刺激性辣味 0.199 0.329 0.374 0.345 0.405 0.358 0.441 3-甲基-3-丁烯-1-醇* 水果甜味 0.19 0.163 0.164 0.162 0.153 0.174 0.179 1-辛烯-3-醇 蘑菇、干草味 0.172 0.144 0.164 0.173 0.125 0.121 0.167 庚醇 青草香、果香 0.108 0.13 0.153 0.148 0.126 0.118 0.148 顺-2-戊烯-1-醇 青草香、果香 0.07 0.06 0.072 0.071 0.057 0.04 0.066 酯类 乙酸乙酯 水果香味 5.167 6.996 6.846 7.309 6.692 6.647 6.959 丁酸乙酯 草莓香、苹果香 0.855 3.902 3.848 3.22 5.875 5.212 4.738 己酸乙酯* 果香、花香 0.839 0.941 0.956 0.813 1.612 1.52 1.057 乙酸异戊酯* 果香、甜香 0.812 4.148 2.277 8.459 5.071 5.302 4.924 异丁酸乙酯 水果味 0.486 4.921 3.491 2.446 6.556 7.139 5.47 辛酸乙酯 苹果味、花香味 0.461 0.202 0.235 0.239 0.185 0.189 0.177 2-甲基丁酸乙酯* 水果味 0.385 1.972 1.551 0.826 3.802 4.752 2.983 3-甲基丁酸乙酯* 水果味、甜味 0.128 0.444 0.87 0.252 1.115 1.447 0.864 异丁酸异丁酯 水果味 0.096 0.058 0.074 0.084 0.075 0.122 0.062 丙酸乙酯 薄荷香 0.051 1.475 0.752 0.905 1.82 2.382 1.749 戊酸乙酯 甜味、果味 0.035 0.032 0.034 0.034 0.088 0.104 0.044 乙酸戊酯 果味、甜味 0.03 0.054 0.033 0.129 0.088 0.096 0.079 乙酸异丁酯 水果香味 0.028 0.112 0.058 0.563 0.389 0.417 0.233 丁酸异丁酯 甜味、水果味 0.019 0.047 0.048 0.043 0.079 0.048 0.057 乙酸丙酯 水果香味 0.012 0.054 0.04 0.161 0.065 0.045 0.07 酮类 3-羟基-2-丁酮 黄油味、青草味 12.833 18.107 16.748 14.353 18.263 19.181 19.334 丙酮 薄荷香气 7.154 5.416 5.875 5.455 4.922 4.646 5.087 2-丁酮 薄荷香气 1.906 0.774 1.026 0.751 0.628 0.547 0.702 2-庚酮* 梨香味 0.527 0.743 0.771 0.685 0.936 0.87 0.911 2-戊酮 酒和薄荷气味 0.151 0.259 0.296 0.204 0.552 0.395 0.537 4-甲基-2-戊酮 青草味 0.016 0.039 0.022 0.032 0.081 0.145 0.097 醛类 壬醛* 柑橘、肥皂味 4.243 0.765 1.069 0.896 0.441 0.337 0.528 丙醛* − 1.272 0.725 0.881 0.797 0.608 0.563 0.684 苯甲醛 坚果香、苦杏仁味 0.649 0.159 0.252 0.268 0.139 0.133 0.207 丁醛 辛辣味、草味、麦芽味 0.633 1.049 0.957 1.04 1.083 1.108 1.09 己醛* 青草香 0.542 0.172 0.268 0.295 0.108 0.142 0.147 反式-2-庚烯醛* 微脂芳香 0.536 0.198 0.266 0.299 0.147 0.114 0.152 2-甲基丁醛 苹果气味 0.396 0.236 0.363 0.375 0.28 0.257 0.345 庚醛* 水果香味 0.371 0.267 0.45 0.433 0.178 0.183 0.226 反式-2-壬烯醛 柑橘味、脂香味 0.353 0.138 0.157 0.168 0.113 0.084 0.101 反式-2-辛烯醛 青草、脂肪味 0.325 0.253 0.29 0.269 0.234 0.2 0.186 乙醛 果味、甜味 0.293 0.216 0.237 0.211 0.176 0.17 0.182 反式-2-戊烯醛 果味、苦杏仁味 0.23 0.185 0.261 0.211 0.118 0.082 0.139 2-甲基丙醛 花香、果香、草香 0.166 0.077 0.147 0.13 0.073 0.051 0.075 正戊醛 木香、水果香 0.017 0.061 0.041 0.147 0.094 0.089 0.096 酸类 乙酸* 酸味、水果香、醋香 8.445 5.893 6.405 7.471 4.472 2.92 3.688 2-甲基丙酸* 酸味、黄油味 1.966 1.472 1.638 1.633 1.537 3.266 3.081 醚类 二甲基硫醚 奶油味、玉米味、腥味 0.414 1.091 0.850 0.740 1.490 1.767 1.341 呋喃类 四氢呋喃 特殊的刺激味 0.223 0.155 0.160 0.152 0.095 0.094 0.120 注:带“*”化合物相对含量为该化合物的单体与二聚体之和;部分风味特征描述来自http://www.thegoodscentscompany.com/search2.html。 -
[1] LOPES L M F, MELLO M M M D, URBINATI E C. β-Glucan reduces cortisol plasma levels, enhances innate immune system after A. hydrophila inoculation, and has lipolytic effects on the pacu (Piaractus mesopotamicus)[J]. Aquaculture,2022,546:737411. doi: 10.1016/j.aquaculture.2021.737411 [2] 邓俊琳, 朱永清, 陈建, 等. 青稞萌动过程中β-葡聚糖、γ-氨基丁酸和多酚的含量研究[J]. 中国粮油学报,2018,33(7):19−25. [DENG J L, ZHU Y Q, CHEN J, et al. Contents of β-glucan, γ-aminobutyric acid and polyphenol in highland barley during germination[J]. Journal of the Chinese Cereals and Oils Association,2018,33(7):19−25. doi: 10.3969/j.issn.1003-0174.2018.07.004 [3] CHAKRABORTY S, DEVI RAJESWARI V. Biomedical aspects of beta-glucan on glucose metabolism and its role on primary gene PIK3R1[J]. Journal of Functional Foods,2022,99:105296. doi: 10.1016/j.jff.2022.105296 [4] 阚建全, 洪晴悦. 青稞生物活性成分及其生理功能研究进展[J]. 食品科学技术学报,2020,38(6):11−20. [KAN J Q, HONG Q Y. Research progress of bioactive ingredients and physiological functions in Qingke[J]. Journal of Food Science and Technology,2020,38(6):11−20. [5] 张龑. 青稞复配粉对面包品质影响的研究[D]. 郑州: 河南工业大学, 2021ZHANG Y. Study on the effect of highland barley compound powder on bread quality [D]. Zhengzhou: Henan University of Technology, 2021. [6] 黄泽华. 大麦β-葡聚糖微凝胶热诱导融渗影响小麦蛋白交联的机理及应用[D]. 无锡: 江南大学, 2019HUANG Z H. Study on the effect of thermally induced infiltration of barley β-glucan microgel on wheat protein aggregation and the application [D]. Wuxi: Jiangnan University, 2019. [7] 李真. 大麦粉对面团特性与面包焙烤品质的影响及其改良剂研究[D]. 镇江: 江苏大学, 2014LI Z. Effect of barley flour on dough properties and bread quality and its improver study [D]. Zhenjiang: Jiangsu University, 2014. [8] LI Z, DONG Y, XIAO X, et al. Mechanism by which β-glucanase improves the quality of fermented barley flour-based food products[J]. Food Chemistry,2020,311:126026. doi: 10.1016/j.foodchem.2019.126026 [9] 钱海峰, 潘琪锋, 李言, 等. β-葡聚糖酶对高燕麦含量面团性质与蛋白结构的影响[J]. 粮油食品科技,2022,30(2):41−49. [QIAN H F, PAN Q F, LI Y, et al. Effect of β-glucanase on dough properties and protein structure with a high oat flour content[J]. Science and Technology of Cereals, Oils and Foods,2022,30(2):41−49. [10] 周素梅. 酶对面包风味影响[J]. 粮食与油脂,1998(2):27−29. [ZHOU S M. Effect of enzymes on the flavor of bread[J]. Grain and Fats,1998(2):27−29. [11] 鲍雨婷, 孙玥, 李雪玲, 等. 滁菊粉对面团特性和面包风味及其抗氧化活性的影响 [J/OL]. 食品科学: 1−13[2022-06-13].https://kns.cnki.net/kcms/detail/11.2206.TS.20220613.1101.077.htmlBAO Y T, SUN Y, LI X L, et al. Effects of Chuzhou chrysanthemum powder on dough properties and flavor, antioxidant activity of bread [J/OL]. Food Science, 1−13[2022-06-13].https://kns.cnki.net/kcms/detail/11.2206.TS.20220613.1101.077.html [12] 侯贺丽, 杨玲玲, 王梦月, 等. 鹰嘴豆粉面包的加工工艺优化及品质分析[J]. 食品研究与开发,2022,43(9):48−55. [HOU H L, YANG L L, WANG M Y, et al. Optimization of chickpea powder bread processing technology and quality analysis[J]. Food Research and Development,2022,43(9):48−55. doi: 10.12161/j.issn.1005-6521.2022.09.007 [13] 李卓豪, 毕金峰, 易建勇, 等. 真空冷冻干燥果胶-纤维素-小分子糖气凝胶质构研究[J]. 核农学报,2022,36(9):1805−1814. [LI Z H, BI J F, YI J Y, et al. Study on texture properties of freeze-dried pectin-cellulose-small molecule sugar aerogels[J]. Journal of Nuclear Agriculture,2022,36(9):1805−1814. doi: 10.11869/j.issn.100-8551.2022.09.1805 [14] QIN W, LIN Z, WANG A, et al. Influence of particle size on the properties of rice flour and quality of gluten-free rice bread[J]. LWT-Food Science and Technology,2021,151:112236. doi: 10.1016/j.lwt.2021.112236 [15] 卢洁. 复配功能糖对面包品质的影响[D]. 无锡: 江南大学, 2022LU J. Effect of compound functional sugar on bread quality [D]. Wuxi: Jiangnan University, 2022. [16] YAO L J, ZHANG Q A, LIU M J. Utilization of apricot kernel skins by ultrasonic treatment of the dough to produce a bread with better flavor and good shelf life[J]. LWT-Food Science and Technology,2021,145:111545. doi: 10.1016/j.lwt.2021.111545 [17] 朱璠. 麸皮处理及和面工艺对全麦面团及面包的影响[D]. 无锡: 江南大学, 2021ZHU F. Effect of bran treatment and kneading process on whole wheat dough and bread [D]. Wuxi: Jiangnan University, 2021. [18] 黄泽华, 朱科学, 周惠明. 大麦β-葡聚糖的凝胶特性及应用研究进展[J]. 食品科学技术学报,2017,35(5):25−31. [HUANG Z H, ZHU K X, ZHOU H M. Research progress in gel properties and application of barley β-glucan[J]. Journal of Food Science and Technology,2017,35(5):25−31. doi: 10.3969/j.issn.2095-6002.2017.05.005 [19] 潘琪锋. 高含量燕麦粉的面包预拌粉研究[D]. 无锡: 江南大学, 2021PAN Q F. Study on thepre-mixed bread flour with a high content of oat flour [D]. Wuxi: Jiangnan University, 2021. [20] VEGA-GáLVEZ A, DI SCALA K, RODRíGUEZ K, et al. Effect of air-drying temperature on physico-chemical properties, antioxidant capacity, colour and total phenolic content of red pepper (Capsicum annuum L. var. Hungarian)[J]. Food Chemistry,2009,117(4):647−653. doi: 10.1016/j.foodchem.2009.04.066 [21] 王玉婉, 涂政, 叶阳. 超微茶粉对全麦面包品质及其淀粉消化特性的影响[J]. 食品科学,2021,42(1):79−85. [WANG Y W, TU Z, YE Y. Effect of superfine tea powder on quality and starch digestion properties of whole-wheat bread[J]. Food Science,2021,42(1):79−85. doi: 10.7506/spkx1002-6630-20191204-046 [22] SANT'ANNA V, GURAK P D, FERREIRA MARCZAK L D, et al. Tracking bioactive compounds with colour changes in foods – A review[J]. Dyes and Pigments,2013,98(3):601−608. doi: 10.1016/j.dyepig.2013.04.011 [23] 徐烨, 李旋, 毕金峰, 等. 复合再造型真空冷冻干燥桃溶果色泽调控研究[J]. 中国食品学报,2022,22(7):160−172. [XU Y, LI X, BI J F, et al. Studies on the color regulation of restructured vacuum freeze-drying peach products[J]. Chinese Journal of Food Science,2022,22(7):160−172. [24] DHINGRA S, JOOD S. Organoleptic and nutritional evaluation of wheat breads supplemented with soybean and barley flour[J]. Food Chemistry,2002,77(4):479−488. doi: 10.1016/S0308-8146(01)00387-9 [25] 张文刚, 张垚, 杨希娟, 等. 不同品种青稞炒制后挥发性风味物质GC-MS分析[J]. 食品科学,2019,40(8):192−201. [ZHANG W G, ZHANG Y, YANG X J, et al. GC-MS analysis of volatile flavor substances in different varieties of roasted hulless barley[J]. Food Science,2019,40(8):192−201. doi: 10.7506/spkx1002-6630-20180522-312 [26] 张文会, 于翠翠, 陈锋, 等. 三种青稞品质及风味物质比较分析[J]. 粮食加工,2020,45(3):66−68. [ZHANG W H, YU C C, CHEN F, et al. Quality and flavor of three species of highland barley comparative analysis[J]. Grain Processing,2020,45(3):66−68. [27] ALI B, KHAN K Y, MAJEED H, et al. Impact of soy–cow's mixed milk enzyme modified cheese on bread aroma[J]. LWT-Food Science and Technology,2022,154:112793. doi: 10.1016/j.lwt.2021.112793 [28] JENSEN S, OESTDAL H, SKIBSTED L H, et al. Chemical changes in wheat pan bread during storage and how it affects the sensory perception of aroma, flavour, and taste[J]. Journal of Cereal Science,2011,53(2):259−268. doi: 10.1016/j.jcs.2010.11.007 [29] 丁双鲲, 杜恺, 袁增慧, 等. 赖氨酸对青稞面包品质及风味特征的影响 [J/OL]. 食品与发酵工业: 1−12[2022-03-25]. https://doi.org/10.13995/j.cnki.11-1802/ts.030749DING S K, DU K, YUAN Z H, et al. Effects of lysine on quality and flavor characteristics of highland barley bread[J/OL]. Food and Fermentation Industry: 1−12[2022-03-25]. https://doi.org/10.13995/j.cnki.11-1802/ts.030749 [30] 张垚, 张文刚, 党斌, 等. 炒制时间及炒制方式对青稞挥发性风味化合物的影响[J]. 食品科学,2020,41(14):271−277. [ZHANG Y, ZHANG W G, DANG B, et al. Effect of stri-frying time and method on volatile flavor compounds in highland barley[J]. Food Science,2020,41(14):271−277. [31] 卢晨曦, 张国治. 全麦面包风味改良的研究进展[J]. 粮食加工,2022,47(3):14−20. [LU C X, ZHANG G Z. Research progress on flavor improvement of wholemeal bread[J]. Grain Processing,2022,47(3):14−20. [32] 刘艳香, 关丽娜, 吴娜娜, 等. 基于GC-IMS技术分析糙米速食粥米储藏过程中风味物质的变化[J]. 粮油食品科技,2022,30(2):113−131. [LIU Y X, GUAN L N, WU N N, et al. Analysis of flavor changes of instant brown rice porridge rice during storage based on gas chromatography-lon mobility spectrometry[J]. Grain, Oil and Food Science and Technology,2022,30(2):113−131. [33] YU P, YANG Y, SUN J, et al. Identification of volatile sulfur-containing compounds and the precursor of dimethyl sulfide in cold-pressed rapeseed oil by GC–SCD and UPLC–MS/MS[J]. Food Chemistry,2022,367:130741. doi: 10.1016/j.foodchem.2021.130741 [34] 金文刚, 刘俊霞, 赵萍, 等. 基于顶空气相色谱-离子迁移谱分析洋县不同色泽糙米蒸煮后挥发性风味物质差异[J]. 食品科学,2022,43(18):258−264. [JIN W G, LIU J X, ZHAO P, et al. Analysis of volatile flavor components in cooked unpolished rice of different colors from Yangxian county by headspace-gas chromatography-ion mobility spectroscopy[J]. Food Science,2022,43(18):258−264. doi: 10.7506/spkx1002-6630-20210927-324 [35] 王金华, 叶晓仪, 母艳, 等. 贵州3种代表性猕猴桃种间特征香气成分比较分析[J]. 食品安全质量检测学报,2022,13(19):6190−6197. [WANG J H, YE X Y, MU Y, et al. Comparative analysis of characteristic aroma components of 3 kinds of representative actinidia chinensis planch species in Guizhou[J]. Journal of Food Safety and Quality,2022,13(19):6190−6197.