Comprehensive evaluation of nutritional quality of 12 mulberry leaves in Zhejiang Province

doi:10.16178/j.issn.0528-9017.20240613

Abstract

Abstract:

Mulberry leaves contain rich nutrients and various natural bioactive ingredients, which have been used in sericulture, food, and pharmacy with vast application prospect. To analyze and evaluate the nutritional quality of mulberry leaves, this study conducted nutrient composition testing on the leaves of 12 mulberries varieties in Zhejiang Province. The results showed that there were differences in the content of various nutrients among different varieties, and the coefficient of variation between different indicators was also varied. According to cluster analysis, mulberry leaves could be divided into those rich in polysaccharides and fats contents, those rich in alkaloids contents, and those rich in amino acids contents. By combining principal component analysis, correlation analysis, and the entropy weight method, the weight coefficients of the three core evaluation indicators of crude protein content, crude fiber content, and total polysaccharide content in mulberry leaf were established as 58.26%, 29.68%, and 12.06%, respectively. The comprehensive evaluation analyzed by the grey correlation weight method showed that the top two in terms of comprehensive quality were Nongsang 8 and Nongsang 14. In conclusoin, a comprehensive evaluation method for the nutrition quality of mulberry leaves was established, which will provide guidance for the evaluation of mulberry germplasm resources, selection and utilization of new varieties in the future.

Key words: cluster analysis, principal component analysis, entropy weight method, grey correlation, mulberry leaf

CLC Number:

S888

LIU Yan, LIN Tianbao, WEI Jia, LIU Peigang, ZHU Yan, LYU Zhiqiang. Comprehensive evaluation of nutritional quality of 12 mulberry leaves in Zhejiang Province[J]. Journal of Zhejiang Agricultural Sciences, 2025, 66(9): 2253-2259.

Figures/Tables 8

References 21

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品种编号	桑树品种	品种编号	桑树品种
S1	强桑1号	S7	农桑14号
S2	强桑2号	S8	丰田2号
S3	强桑3号	S9	盛东1号
S4	强桑5号	S10	薪一圆
S5	农桑8号	S11	荷叶白
S6	农桑12号	S12	团头荷叶白

品种编号	桑树品种	品种编号	桑树品种
S1	强桑1号	S7	农桑14号
S2	强桑2号	S8	丰田2号
S3	强桑3号	S9	盛东1号
S4	强桑5号	S10	薪一圆
S5	农桑8号	S11	荷叶白
S6	农桑12号	S12	团头荷叶白

品种编号	粗蛋白含量 (x₁)/%	粗纤维含量 (x₂)/%	粗脂肪含量 (x₃)/%	总多糖含量 (x₄)/(mg·g^-1)	生物碱含量 (x₅)/(mg·g^-1)	蛋氨酸含量 (x₆)/%	赖氨酸含量 (x₇)/%	粗灰分含量 (x₈)/%
S1	19.17±0.02	9.20±0.03	1.96±0.02	20.10±0.03	0.84±0.04	0.12±0.02	0.79±0.03	6.71±0.02
S2	18.83±0.02	8.65±0.07	2.07±0.03	19.61±0.03	0.76±0.05	0.11±0.01	0.81±0.04	7.02±0.16
S3	18.99±0.01	8.35±0.05	2.07±0.04	19.39±0.05	0.93±0.05	0.13±0.01	0.79±0.03	6.92±002
S4	19.21±0.02	9.16±0.04	1.94±0.04	19.28±0.05	0.87±0.02	0.13±0.02	0.81±0.03	6.81±0.05
S5	21.98±0.04	10.06±0.05	1.44±0.02	15.26±0.10	0.98±0.07	0.14±0.01	0.83±0.02	6.58±0.02
S6	21.40±0.04	11.14±0.07	1.57±0.01	17.17±0.06	1.20±0.05	0.13±0.02	0.82±0.04	6.35±0.05
S7	21.27±0.08	9.18±0.03	1.64±0.01	17.08±0.08	1.04±0.02	0.11±0.02	0.79±0.03	6.70±0.03
S8	20.22±0.10	9.00±0.05	1.80±0.02	20.40±0.05	1.12±0.01	0.12±0.01	0.76±0.03	7.06±0.04
S9	18.98±0.01	11.20±0.04	2.02±0.03	21.32±0.28	0.95±0.01	0.12±0.01	0.78±0.04	7.51±0.05
S10	18.87±0.06	10.17±0.03	1.67±0.01	20.73±0.01	0.87±0.06	0.11±0.01	0.80±0.04	7.95±1.40
S11	18.82±0.02	13.13±0.07	1.85±0.03	18.69±1.41	0.87±0.07	0.12±0.02	0.82±0.03	6.37±0.06
S12	19.24±0.02	12.43±0.17	1.72±0.01	18.80±0.03	0.97±0.06	0.12±0.01	0.79±0.03	7.11±0.04
平均值	19.75	10.14	1.81	18.99	0.95	0.12	0.80	6.93
最大值	21.98	13.13	2.07	21.32	1.20	0.14	0.83	7.95
最小值	18.82	8.35	1.44	15.26	0.76	0.11	0.76	6.35
SD	1.16	1.53	0.21	1.74	0.12	0.01	0.02	0.46
CV/%	5.60	14.50	10.90	8.80	12.60	7.90	2.40	6.30

品种编号	粗蛋白含量 (x₁)/%	粗纤维含量 (x₂)/%	粗脂肪含量 (x₃)/%	总多糖含量 (x₄)/(mg·g^-1)	生物碱含量 (x₅)/(mg·g^-1)	蛋氨酸含量 (x₆)/%	赖氨酸含量 (x₇)/%	粗灰分含量 (x₈)/%
S1	19.17±0.02	9.20±0.03	1.96±0.02	20.10±0.03	0.84±0.04	0.12±0.02	0.79±0.03	6.71±0.02
S2	18.83±0.02	8.65±0.07	2.07±0.03	19.61±0.03	0.76±0.05	0.11±0.01	0.81±0.04	7.02±0.16
S3	18.99±0.01	8.35±0.05	2.07±0.04	19.39±0.05	0.93±0.05	0.13±0.01	0.79±0.03	6.92±002
S4	19.21±0.02	9.16±0.04	1.94±0.04	19.28±0.05	0.87±0.02	0.13±0.02	0.81±0.03	6.81±0.05
S5	21.98±0.04	10.06±0.05	1.44±0.02	15.26±0.10	0.98±0.07	0.14±0.01	0.83±0.02	6.58±0.02
S6	21.40±0.04	11.14±0.07	1.57±0.01	17.17±0.06	1.20±0.05	0.13±0.02	0.82±0.04	6.35±0.05
S7	21.27±0.08	9.18±0.03	1.64±0.01	17.08±0.08	1.04±0.02	0.11±0.02	0.79±0.03	6.70±0.03
S8	20.22±0.10	9.00±0.05	1.80±0.02	20.40±0.05	1.12±0.01	0.12±0.01	0.76±0.03	7.06±0.04
S9	18.98±0.01	11.20±0.04	2.02±0.03	21.32±0.28	0.95±0.01	0.12±0.01	0.78±0.04	7.51±0.05
S10	18.87±0.06	10.17±0.03	1.67±0.01	20.73±0.01	0.87±0.06	0.11±0.01	0.80±0.04	7.95±1.40
S11	18.82±0.02	13.13±0.07	1.85±0.03	18.69±1.41	0.87±0.07	0.12±0.02	0.82±0.03	6.37±0.06
S12	19.24±0.02	12.43±0.17	1.72±0.01	18.80±0.03	0.97±0.06	0.12±0.01	0.79±0.03	7.11±0.04
平均值	19.75	10.14	1.81	18.99	0.95	0.12	0.80	6.93
最大值	21.98	13.13	2.07	21.32	1.20	0.14	0.83	7.95
最小值	18.82	8.35	1.44	15.26	0.76	0.11	0.76	6.35
SD	1.16	1.53	0.21	1.74	0.12	0.01	0.02	0.46
CV/%	5.60	14.50	10.90	8.80	12.60	7.90	2.40	6.30

营养成分	粗蛋白含量 (x₁)	粗纤维含量 (x₂)	粗脂肪含量 (x₃)	总多糖含量 (x₄)	生物碱含量 (x₅)	蛋氨酸含量 (x₆)	赖氨酸含量 (x₇)
粗纤维含量(x₂)	-0.077
粗脂肪含量(x₃)	-0.799^**	-0.291
总多糖含量(x₄)	-0.823^**	-0.106	0.718^**
生物碱含量(x₅)	0.711^**	0.136	-0.585^*	-0.379
蛋氨酸含量(x₆)	0.446	-0.003	-0.157	-0.469	0.309
赖氨酸含量(x₇)	0.288	0.279	-0.403	-0.640^*	-0.170	0.368
粗灰分含量(x₈)	-0.480	-0.116	0.207	0.684^**	-0.274	0.561^*	-0.438