浙江农业学报 ›› 2022, Vol. 34 ›› Issue (9): 1866-1876.DOI: 10.3969/j.issn.1004-1524.2022.09.06
吕敬(), 吴治勇, 郭晓农, 冯玉兰, 卢建雄, 柴薇薇(
)
收稿日期:
2021-08-20
出版日期:
2022-09-25
发布日期:
2022-09-30
通讯作者:
柴薇薇
作者简介:
*柴薇薇,E-mail: xiayunchaiweiwei@163.com基金资助:
LYU Jing(), WU Zhiyong, GUO Xiaonong, FENG Yulan, LU Jianxiong, CHAI Weiwei(
)
Received:
2021-08-20
Online:
2022-09-25
Published:
2022-09-30
Contact:
CHAI Weiwei
摘要:
为优化藜麦秸秆的乳酸菌发酵工艺条件,选取发酵时间、乳酸菌添加量和秸秆含水量3个因素,利用单因素试验和响应面分析探究不同发酵条件对发酵后藜麦秸秆感官品质和粗蛋白质含量的影响。响应面分析结果显示,3个因素对发酵后的藜麦秸秆粗蛋白质含量的影响从大到小依次为乳酸菌添加量>秸秆含水量>发酵时间,最佳工艺参数为发酵时间24.5 d,乳酸菌添加量12 mg·kg-1,秸秆含水量60%。在此条件下,发酵后的藜麦秸秆粗蛋白质含量为(6.93± 0.05)%。该结果可以为藜麦秸秆发酵饲料的开发提供技术支撑。
中图分类号:
吕敬, 吴治勇, 郭晓农, 冯玉兰, 卢建雄, 柴薇薇. 基于响应面法的乳酸菌发酵藜麦秸秆工艺条件优化[J]. 浙江农业学报, 2022, 34(9): 1866-1876.
LYU Jing, WU Zhiyong, GUO Xiaonong, FENG Yulan, LU Jianxiong, CHAI Weiwei. Optimization of fermented quinoa straw with lactic acid bacteria by response surface methodology[J]. Acta Agriculturae Zhejiangensis, 2022, 34(9): 1866-1876.
发酵时间 Fermentation time/d | 气味 Smell | 质地 Texture | 色泽 Colour | pH | 感官评定等级 Sensory grade |
---|---|---|---|---|---|
5 | 淡酸味Light sour taste | 松散软Loose and soft | 褐黄色Tawny | 4.9 | 一般General |
10 | 淡酸味Light sour taste | 松散软Loose and soft | 褐黄色Tawny | 4.5 | 良好Good |
15 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 褐黄色Tawny | 4.3 | 良好Good |
20 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 3.8 | 优良Excellent |
25 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 3.8 | 优良Excellent |
30 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 3.6 | 优良Excellent |
表1 不同发酵时间下发酵后藜麦秸秆的感官评定结果
Table 1 Sensory evaluation result of fermented straw under different fermentation time
发酵时间 Fermentation time/d | 气味 Smell | 质地 Texture | 色泽 Colour | pH | 感官评定等级 Sensory grade |
---|---|---|---|---|---|
5 | 淡酸味Light sour taste | 松散软Loose and soft | 褐黄色Tawny | 4.9 | 一般General |
10 | 淡酸味Light sour taste | 松散软Loose and soft | 褐黄色Tawny | 4.5 | 良好Good |
15 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 褐黄色Tawny | 4.3 | 良好Good |
20 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 3.8 | 优良Excellent |
25 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 3.8 | 优良Excellent |
30 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 3.6 | 优良Excellent |
乳酸菌添加量 Addition amount of lactic acid bacteria/(mg·kg-1) | 气味 Smell | 质地 Texture | 色泽 Color | pH | 感官评定等级 Sensory grade |
---|---|---|---|---|---|
2 | 淡酸味Light sour taste | 松散硬Loose and hard | 暗黄色Dark yellow | 5.0 | 一般General |
4 | 淡酸味Light sour taste | 松散硬Loose and hard | 褐黄色Tawny | 4.8 | 良好Good |
6 | 淡酸味Light sour taste | 松散软Loose and soft | 褐黄色Tawny | 4.8 | 良好Good |
8 | 淡酸味Light sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 4.2 | 良好Good |
10 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 3.8 | 优良Excellent |
12 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 3.5 | 优良Excellent |
表2 不同乳酸菌添加量下发酵后藜麦秸秆的感官评定结果
Table 2 Sensory evaluation result of fermented straw under different addition amount of lactic acid bacteria
乳酸菌添加量 Addition amount of lactic acid bacteria/(mg·kg-1) | 气味 Smell | 质地 Texture | 色泽 Color | pH | 感官评定等级 Sensory grade |
---|---|---|---|---|---|
2 | 淡酸味Light sour taste | 松散硬Loose and hard | 暗黄色Dark yellow | 5.0 | 一般General |
4 | 淡酸味Light sour taste | 松散硬Loose and hard | 褐黄色Tawny | 4.8 | 良好Good |
6 | 淡酸味Light sour taste | 松散软Loose and soft | 褐黄色Tawny | 4.8 | 良好Good |
8 | 淡酸味Light sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 4.2 | 良好Good |
10 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 3.8 | 优良Excellent |
12 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 3.5 | 优良Excellent |
秸秆含水量 Water content of straw/% | 气味 Smell | 质地 Texture | 色泽 Color | pH | 感官评定等级 Sensory grade |
---|---|---|---|---|---|
70 | 酒酸味Wine sour taste | 略黏连Slightly adherent | 亮黄色Bright yellow | 4.5 | 一般General |
60 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 3.8 | 优良Excellent |
50 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 4.0 | 优良Excellent |
40 | 淡酸味Light sour taste | 松散软Loose and soft | 褐黄色tawny | 4.5 | 良好Good |
30 | 淡酸味Light sour taste | 松散硬Loose and hard | 暗黄色Dark yellow | 5.0 | 一般General |
20 | 淡酸味Light sour taste | 松散硬Loose and hard | 暗黄色Dark yellow | 5.0 | 一般General |
表3 不同秸秆含水量下发酵后藜麦秸秆的感官评定结果
Table 3 Sensory evaluation result of fermented straw under different water content of straw
秸秆含水量 Water content of straw/% | 气味 Smell | 质地 Texture | 色泽 Color | pH | 感官评定等级 Sensory grade |
---|---|---|---|---|---|
70 | 酒酸味Wine sour taste | 略黏连Slightly adherent | 亮黄色Bright yellow | 4.5 | 一般General |
60 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 3.8 | 优良Excellent |
50 | 甘酸味Sweet and sour taste | 松散软Loose and soft | 亮黄色Bright yellow | 4.0 | 优良Excellent |
40 | 淡酸味Light sour taste | 松散软Loose and soft | 褐黄色tawny | 4.5 | 良好Good |
30 | 淡酸味Light sour taste | 松散硬Loose and hard | 暗黄色Dark yellow | 5.0 | 一般General |
20 | 淡酸味Light sour taste | 松散硬Loose and hard | 暗黄色Dark yellow | 5.0 | 一般General |
水平编码 Level code | A:发酵时间 Fermentation time/d | B:乳酸菌添加量 Addition amount of lactic acid bacteria/(mg·kg-1) | C:秸秆含水量 Water content of straw/% |
---|---|---|---|
-1 0 1 | 20 25 30 | 8 10 12 | 50 60 70 |
表4 响应面试验的因素及其水平
Table 4 Factors and levels of response surface test
水平编码 Level code | A:发酵时间 Fermentation time/d | B:乳酸菌添加量 Addition amount of lactic acid bacteria/(mg·kg-1) | C:秸秆含水量 Water content of straw/% |
---|---|---|---|
-1 0 1 | 20 25 30 | 8 10 12 | 50 60 70 |
序号No. | A | B | C | Y/% |
---|---|---|---|---|
1 | -1 | -1 | 0 | 5.49±0.05 |
2 | 1 | -1 | 0 | 5.90±0.05 |
3 | -1 | 1 | 0 | 6.51±0.08 |
4 | 1 | 1 | 0 | 6.45±0.04 |
5 | -1 | 0 | -1 | 5.42±0.02 |
6 | 1 | 0 | -1 | 5.82±0.01 |
7 | -1 | 0 | 1 | 6.08±0.01 |
8 | 1 | 0 | 1 | 5.86±0.02 |
9 | 0 | -1 | -1 | 5.46±0.01 |
10 | 0 | 1 | -1 | 6.35±0.03 |
11 | 0 | -1 | 1 | 5.71±0.03 |
12 | 0 | 1 | 1 | 6.53±0.01 |
13 | 0 | 0 | 0 | 6.68±0.03 |
14 | 0 | 0 | 0 | 6.70±0.04 |
15 | 0 | 0 | 0 | 6.55±0.02 |
16 | 0 | 0 | 0 | 6.64±0.03 |
17 | 0 | 0 | 0 | 6.66±0.02 |
表5 响应面试验方案与结果
Table 5 Scheme and results of response surface test
序号No. | A | B | C | Y/% |
---|---|---|---|---|
1 | -1 | -1 | 0 | 5.49±0.05 |
2 | 1 | -1 | 0 | 5.90±0.05 |
3 | -1 | 1 | 0 | 6.51±0.08 |
4 | 1 | 1 | 0 | 6.45±0.04 |
5 | -1 | 0 | -1 | 5.42±0.02 |
6 | 1 | 0 | -1 | 5.82±0.01 |
7 | -1 | 0 | 1 | 6.08±0.01 |
8 | 1 | 0 | 1 | 5.86±0.02 |
9 | 0 | -1 | -1 | 5.46±0.01 |
10 | 0 | 1 | -1 | 6.35±0.03 |
11 | 0 | -1 | 1 | 5.71±0.03 |
12 | 0 | 1 | 1 | 6.53±0.01 |
13 | 0 | 0 | 0 | 6.68±0.03 |
14 | 0 | 0 | 0 | 6.70±0.04 |
15 | 0 | 0 | 0 | 6.55±0.02 |
16 | 0 | 0 | 0 | 6.64±0.03 |
17 | 0 | 0 | 0 | 6.66±0.02 |
图4 发酵时间(A)和乳酸菌添加量(B)的交互作用对发酵后的藜麦秸秆粗蛋白质含量的影响
Fig.4 Effect of interaction between fermentation time (A) and addition amount of lactic acid bacteria (B) on crude protein content of fermented straw
图5 发酵时间(A)和秸秆含水量(C)的交互作用对发酵后的藜麦秸秆粗蛋白质含量的影响
Fig.5 Effect of interaction between fermentation time (A) and water content of straw (C) on crude protein content of fermented straw
图6 乳酸菌添加量(B)和秸秆含水量(C)的交互作用对发酵后的藜麦秸秆粗蛋白质含量的影响
Fig.6 Effect of interaction between addition amount of lactic acid bacteria (B) and water content of straw (C) on crude protein content of fermented straw
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