Study on quality changes and shelf life of purified-truffle storage at different temperatures

doi:10.3969/j.issn.1004-1524.20221658

Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (11): 2698-2709.DOI: 10.3969/j.issn.1004-1524.20221658

• Food Science • Previous Articles Next Articles

Study on quality changes and shelf life of purified-truffle storage at different temperatures

QING Yuan¹(), FANG Zhirong¹, YAO Xin¹, YIN Sheng²

1. Panxi Crops Research and Utilization Key Laboratory of Sichuan Province, Xichang University, Xichang 615013, Sichuan, China
2. Huidong Gaochuan Tianyuan Agricultural Technology Co. Ltd., Huidong 615200, Sichuan, China

Received:2022-11-20 Online:2023-11-25 Published:2023-12-04

Abstract

Abstract:

Tuber indicum (truffle) was used as the material to investigate the effects of different storage temperatures on weight loss, decay rate, firmness, respiratory intensity, soluble protein content, polyphenol oxidase (PPO) activity, total number of colonies and sensory evaluation. Also, the shelf life prediction model was further established. Results showed that, with prolonged storage time, low temperature was beneficial to decrease the weight loss, decay rate and respiratory intensity, inhibit the decrease of soluble protein content and PPO activity, maintain the firmness and reduce the reproduction speed of bacterial colonies. Pearson correlation analysis demonstrated that weight loss, decay rate, PPO activity and soluble protein content were the key factors for the quality changes of purified-truffle. The results of dynamic analysis combined with Arrhenius equation showed that the fitting precision of PPO activity values was higher, and the shelf life model established with PPO activity was more accurate and the determination R² was over 0.90. According to the model validation results, the relative error between the measured value and the predicted value was less than 11.05%, which could effectively predict the shelf life within the temperature range of (-3±1)~(16±1) ℃.

Key words: Tuber indicum, storage temperature, quality, shelf life

CLC Number:

TS205

QING Yuan, FANG Zhirong, YAO Xin, YIN Sheng. Study on quality changes and shelf life of purified-truffle storage at different temperatures[J]. Acta Agriculturae Zhejiangensis, 2023, 35(11): 2698-2709.

Figures/Tables 14

References 27

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评价指标	0~3	3.1~5.0	5.1~8.0	8.1~10
Indicator
气味 Odor	完全腐烂气味 Completely rotten odor	腐烂气味较明显 The smell of decay is more pronounced	块菌香气淡,轻微腐烂气味 The aroma of truffles is light, with a slight rotten odor	块菌香气突出,无腐烂气味 The aroma of truffles is prominent, without a rotten odor
组织状态 Texture	腐烂、无弹性 Rotten, inelastic	部分发霉,弹性较差 Partially moldy, poor elasticity	部分软化,弹性较好 Partially softened, with good elasticity	硬度高,弹性好 High firmness and good elasticity
可接受度 Acceptability	不能接受 Not acceptable	勉强接受 Grudging acceptable	可以接受 Acceptable	自然接受 Naturally acceptable

评价指标	0~3	3.1~5.0	5.1~8.0	8.1~10
Indicator
气味 Odor	完全腐烂气味 Completely rotten odor	腐烂气味较明显 The smell of decay is more pronounced	块菌香气淡,轻微腐烂气味 The aroma of truffles is light, with a slight rotten odor	块菌香气突出,无腐烂气味 The aroma of truffles is prominent, without a rotten odor
组织状态 Texture	腐烂、无弹性 Rotten, inelastic	部分发霉,弹性较差 Partially moldy, poor elasticity	部分软化,弹性较好 Partially softened, with good elasticity	硬度高,弹性好 High firmness and good elasticity
可接受度 Acceptability	不能接受 Not acceptable	勉强接受 Grudging acceptable	可以接受 Acceptable	自然接受 Naturally acceptable

温度 Temperature/ ℃	指标 Index	硬度 Hardness	失重率 Weight loss	腐败率 Decay rate		呼吸强度 Respiratory intensity		可溶性蛋白含量 Soluble protein content		PPO活性 PPO activity		菌落总数 Total number of colony	感官评分 Sensory score
-3±1	硬度Hardness	1.000	-0.902^**	-0.722^**		0.842^**		-0.657^*		-0.860^**		-0.747^**	0.904^**
	失重率Weight loss		1.000	0.815^**		-0.793^**		-0.614^*		0.955^**		0.832^**	-0.942^**
	腐败率Decay rate			1.000		-0.567^*		-0.531		0.832^**		0.588^*	-0.910^**
	呼吸强度					1.000		0.569^*		-0.763^**		-0.914^**	0.735^**
	Respiratory intensity
	可溶性蛋白含量							1.000		-0.568^**		-0.476	0.641^*
	Soluble protein content
	PPO活性PPO activity									1.000		-0.754^**	-0.935^**
	菌落总数Total number of colony											1.000	-0.701^**
	感官评分Sensory score												1.000
0±1	硬度Hardness	1.000	-0.396	-0.474		0.071		0.198		-0.300		-0.471	0.354
	失重率Weight loss		1.000	0.935^**		-0.654^*		-0.716^**		0.928^**		0.860^**	-0.949^**
	腐败率Decay rate			1.000		-0.632^*		-0.695^**		0.792^**		0.908^**	-0.962^**
	呼吸强度Respiratory intensity					1.000		0.414		-0.453		-0.422	0.674^**
	可溶性蛋白含量							1.000		-0.722^**		-0.673^**	0.752^**
	Soluble protein content
	PPO活性PPO activity									1.000		0.769^**	-0.816^**
	菌落总数Total number of colony											1.000	-0.876^**
	感官评分Sensory score												1.000
4±1	硬度Hardness	1.000	-0.772^**	-0.666^**		0.376		0.601^*		-0.605^*		-0.646^*	0.618
	失重率Weight loss		1.000	0.948^**		-0.683^**		0.883^**		0.902^**		0.918^**	-0.981^**
	腐败率Decay rate			1.000		-0.696^**		0.794^**		0.923^**		0.929^**	-0.937^**
	呼吸强度Respiratory intensity					1.000		-0.606^*		-0.617^*		-0.651^*	0.546
	可溶性蛋白含量							1.000		-0.806^**		-0.719^**	0.692^*
	PPO活性PPO activity									1.000		0.922^**	-0.743^*
	Soluble protein content
	菌落总数Total number of colony											1.000	-0.887^**
	感官评分Sensory score												1.000
8±1	硬度Hardness	1.000	-0.401	-0.424		0.374		0.412		-0.312		-0.379	0.130
	失重率Weight loss		1.000	0.980^**		-0.404		-0.938^**		0.976^**		0.975^**	-0.980^**
	腐败率Decay rate			1.000		-0.381		-0.931^**		0.938^**		0.963^**	-0.960^**
	呼吸强度Respiratory intensity					1.000		0.333		-0.319		-0.418	0.123
	可溶性蛋白含量							1.000		-0.914^**		-0.905^**	0.855^**
	Soluble protein content
	PPO活性PPO activity									1.000		0.936^**	-0.961^**
	菌落总数Total number of colony											1.000	-0.921^**
	感官评分Sensory score												1.000
12±1	硬度Hardness	1.000	-0.671^**	-0.753^**		0.250		0.599^*		-0.496		-0.508	-0.717^*
	失重率Weight loss		1.000	0.978^**		-0.392		-0.890^**		0.937^**		0.953^**	-0.978^**
	腐败率Decay rate			1.000		-0.398		-0.871^**		0.879^**		0.898^**	-0.977^**
	呼吸强度Respiratory intensity					1.000		0.221		-0.128		-0.300	-0.063
	可溶性蛋白含量							1.0000		-0.906^**		-0.860^**	0.869^**
	Soluble protein content
	PPO活性PPO activity									1.000		0.946^**	-0.916^**
	菌落总数Total number of colony											1.000	-0.920^**
	感官评分Sensory score												1.000
16±1	硬度Hardness	1.000	-0.800^**	-0.835^**		0.521		0.703^**		-0.444		-0.751^**	-0.588
	失重率Weight loss		1.000	0.985^**		-0.390		-0.943^**		0.850^**		0.955^**	-0.959^**
	腐败率Decay rate			1.000		-0.378		-0.950^**		0.796^**		0.918^**	-0.978^**
	呼吸强度Respiratory intensity				1.000		0.254		0.048		-0.451		-0.539
	可溶性蛋白含量						1.000		-0.860^**		-0.840^**		-0.867^*
	Soluble protein content
	PPO活性PPO activity								1.000		0.795^**		-0.876^**
	菌落总数Total number of colony										1.000		-0.809
	感官评分Sensory score												1.000

温度 Temperature/ ℃	指标 Index	硬度 Hardness	失重率 Weight loss	腐败率 Decay rate		呼吸强度 Respiratory intensity		可溶性蛋白含量 Soluble protein content		PPO活性 PPO activity		菌落总数 Total number of colony	感官评分 Sensory score
-3±1	硬度Hardness	1.000	-0.902^**	-0.722^**		0.842^**		-0.657^*		-0.860^**		-0.747^**	0.904^**
	失重率Weight loss		1.000	0.815^**		-0.793^**		-0.614^*		0.955^**		0.832^**	-0.942^**
	腐败率Decay rate			1.000		-0.567^*		-0.531		0.832^**		0.588^*	-0.910^**
	呼吸强度					1.000		0.569^*		-0.763^**		-0.914^**	0.735^**
	Respiratory intensity
	可溶性蛋白含量							1.000		-0.568^**		-0.476	0.641^*
	Soluble protein content
	PPO活性PPO activity									1.000		-0.754^**	-0.935^**
	菌落总数Total number of colony											1.000	-0.701^**
	感官评分Sensory score												1.000
0±1	硬度Hardness	1.000	-0.396	-0.474		0.071		0.198		-0.300		-0.471	0.354
	失重率Weight loss		1.000	0.935^**		-0.654^*		-0.716^**		0.928^**		0.860^**	-0.949^**
	腐败率Decay rate			1.000		-0.632^*		-0.695^**		0.792^**		0.908^**	-0.962^**
	呼吸强度Respiratory intensity					1.000		0.414		-0.453		-0.422	0.674^**
	可溶性蛋白含量							1.000		-0.722^**		-0.673^**	0.752^**
	Soluble protein content
	PPO活性PPO activity									1.000		0.769^**	-0.816^**
	菌落总数Total number of colony											1.000	-0.876^**
	感官评分Sensory score												1.000
4±1	硬度Hardness	1.000	-0.772^**	-0.666^**		0.376		0.601^*		-0.605^*		-0.646^*	0.618
	失重率Weight loss		1.000	0.948^**		-0.683^**		0.883^**		0.902^**		0.918^**	-0.981^**
	腐败率Decay rate			1.000		-0.696^**		0.794^**		0.923^**		0.929^**	-0.937^**
	呼吸强度Respiratory intensity					1.000		-0.606^*		-0.617^*		-0.651^*	0.546
	可溶性蛋白含量							1.000		-0.806^**		-0.719^**	0.692^*
	PPO活性PPO activity									1.000		0.922^**	-0.743^*
	Soluble protein content
	菌落总数Total number of colony											1.000	-0.887^**
	感官评分Sensory score												1.000
8±1	硬度Hardness	1.000	-0.401	-0.424		0.374		0.412		-0.312		-0.379	0.130
	失重率Weight loss		1.000	0.980^**		-0.404		-0.938^**		0.976^**		0.975^**	-0.980^**
	腐败率Decay rate			1.000		-0.381		-0.931^**		0.938^**		0.963^**	-0.960^**
	呼吸强度Respiratory intensity					1.000		0.333		-0.319		-0.418	0.123
	可溶性蛋白含量							1.000		-0.914^**		-0.905^**	0.855^**
	Soluble protein content
	PPO活性PPO activity									1.000		0.936^**	-0.961^**
	菌落总数Total number of colony											1.000	-0.921^**
	感官评分Sensory score												1.000
12±1	硬度Hardness	1.000	-0.671^**	-0.753^**		0.250		0.599^*		-0.496		-0.508	-0.717^*
	失重率Weight loss		1.000	0.978^**		-0.392		-0.890^**		0.937^**		0.953^**	-0.978^**
	腐败率Decay rate			1.000		-0.398		-0.871^**		0.879^**		0.898^**	-0.977^**
	呼吸强度Respiratory intensity					1.000		0.221		-0.128		-0.300	-0.063
	可溶性蛋白含量							1.0000		-0.906^**		-0.860^**	0.869^**
	Soluble protein content
	PPO活性PPO activity									1.000		0.946^**	-0.916^**
	菌落总数Total number of colony											1.000	-0.920^**
	感官评分Sensory score												1.000
16±1	硬度Hardness	1.000	-0.800^**	-0.835^**		0.521		0.703^**		-0.444		-0.751^**	-0.588
	失重率Weight loss		1.000	0.985^**		-0.390		-0.943^**		0.850^**		0.955^**	-0.959^**
	腐败率Decay rate			1.000		-0.378		-0.950^**		0.796^**		0.918^**	-0.978^**
	呼吸强度Respiratory intensity				1.000		0.254		0.048		-0.451		-0.539
	可溶性蛋白含量						1.000		-0.860^**		-0.840^**		-0.867^*
	Soluble protein content
	PPO活性PPO activity								1.000		0.795^**		-0.876^**
	菌落总数Total number of colony										1.000		-0.809
	感官评分Sensory score												1.000

指标 Index	温度 Temperature/℃	零级动力学Zero-order kinetics			一级动力学First order dynamics
指标 Index	温度 Temperature/℃	方程Equation	R²	∑ R²	方程Equation	R²	∑ R²
失重率	-3±1	Y=0.243t-0.729	0.944	5.816	—	—	—
Weight loss	0±1	Y=0.103t+0.006	0.957		—	—	—
	4±1	Y=0.297t-0.432	0.973		—	—	—
	8±1	Y=0.320t-0.170	0.989		—	—	—
	12±1	Y=0.357t-0.055	0.965		—	—	—
	16±1	Y=0.404t-0.044	0.988		—	—	—
腐败率	-3±1	Y=0.383t-2.580	0.663	5.378	—	—	—
Decay rate	0±1	Y=0.285t-0.887	0.907		—	—	—
	4±1	Y=0.476t-0.352	0.939		—	—	—
	8±1	Y=0.590t-0.778	0.954		—	—	—
	12±1	Y=1.469t-4.332	0.937		—	—	—
	16±1	Y=2.328t-4.320	0.978		—	—	—
PPO活性	-3±1	Y=0.227t+5.625	0.930	5.233	Y=5.899e^0.026^t	0.930	4.709
PPO activity	0±1	Y=0.233t+7.018	0.809		Y=6.985e^0.025^t	0.765
	4±1	Y=0.410t+7.477	0.900		Y=7.641e^0.034^t	0.813
	8±1	Y=0.534t+7.559	0.954		Y=7.841e^0.040^t	0.848
	12±1	Y=0.634t+9.212	0.899		Y=8.993e^0.043^t	0.760
	16±1	Y=0.620t+12.578	0.741		Y=10.844e^0.040^t	0.593
可溶性蛋白含量	-3±1	Y=-0.116 t+20.71	0.442	4.566	Y=5.223e^0.008^t	0.621	5.011
Soluble protein	0±1	Y=-0.157 t+20.351	0.618		Y=5.458e^0.006^t	0.795
content	4±1	Y=0.254 t+20.731	0.765		Y=5.690e^0.006^t	0.880
	8±1	Y=-0.436 t+21.074	0.914		Y=5.590e^-0.010^t	0.935
	12±1	Y=-0.507 t+20.290	0.895		Y=5.830e^0.010^t	0.894
	16±1	Y=-0.576 t+20.178	0.932		Y=5.866e^0.01^t	0.886

Study on quality changes and shelf life of purified-truffle storage at different temperatures

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指标 Index	回归方程 Regression equation	R²
失重率Weight loss	Y=0.181 3x-1.964 1	0.473 1
腐败率Decay rate	Y=0.404 5x-1.791 7	0.857 2
PPO活性PPO activity	Y=-4.811 7x+16.337	0.900 9
可溶性蛋白含量	Y=-0.255 9x+2.350 5	0.479 8
Soluble protein content

贮藏温度 Temperature/ ℃	货架期预测值 Predicted shelf life value/d	货架期实测值 Measured shelf life value/d	相对误差 Relative error/%
-3±1	62.59	57	9.81
0±1	51.15	50	2.30
4±1	39.86	36	10.72
8±1	31.02	29	6.97
12±1	24.43	22	11.05
16±1	19.41	18	7.83

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