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Liao X, Xing Y, Fan X, Qiu Y, Xu Q, Liu X. Effect of Composite Edible Coatings Combined with Modified Atmosphere Packaging on the Storage Quality and Microbiological Properties of Fresh-Cut Pineapple. Foods 2023; 12:foods12061344. [PMID: 36981269 PMCID: PMC10048421 DOI: 10.3390/foods12061344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/15/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
This study investigated the effect of edible coating (EC), modified atmosphere packaging (MAP), and edible coating + modified atmosphere packaging (EC + MAP) treatments on the quality of fresh-cut pineapples during storage at 4 °C. The quality differences were analyzed by measuring the quality, physiological indicators, and total microbial counts. After 8 d of storage, the brightness (L*) values of the EC + MAP and control samples were 72.76 and 60.83, respectively. The water loss and respiratory rate of the EC + MAP were significantly inhibited from 0% and 29.33 mg CO2 kg-1 h-1 to 4.13% and 43.84 mg CO2 kg-1 h-1, respectively. Furthermore, the fresh-cut pineapples treated with EC + MAP presented a good appearance, with lower total soluble solids (TSS) and relative conductivity and higher titratable acid (TA), ascorbic acid (AA), total phenol content, and firmness compared to the other treatment groups. At the end of storage, the EC + MAP samples exhibited the lowest polyphenol oxidase (PPO) activity, peroxidase (POD) activity, and malondialdehyde (MDA) content at 28.53 U, 60.37 U, and 1.47 nmol·g-1, respectively. Furthermore, the efficiency of EC + MAP treatment exceeded that of EC or MAP alone, preventing key problems involving the surface browning and microbiological safety of the fresh-cut pineapples. The results showed that EC + MAP treatment was more successful in maintaining the storage quality and extending the shelf life of fresh-cut pineapples.
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Affiliation(s)
- Xingmei Liao
- Food Microbiology Key Laboratory of Sichuan Province, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, College of Food and Bioengineering, Xihua University, Chengdu 610039, China
- Key Laboratory of Food Non Thermal Processing, Engineering Technology Research Center of Food Non Thermal Processing, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Yage Xing
- Food Microbiology Key Laboratory of Sichuan Province, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, College of Food and Bioengineering, Xihua University, Chengdu 610039, China
- Key Laboratory of Food Non Thermal Processing, Engineering Technology Research Center of Food Non Thermal Processing, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Xiangfeng Fan
- Food Microbiology Key Laboratory of Sichuan Province, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, College of Food and Bioengineering, Xihua University, Chengdu 610039, China
| | - Ye Qiu
- Food Microbiology Key Laboratory of Sichuan Province, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, College of Food and Bioengineering, Xihua University, Chengdu 610039, China
| | - Qinglian Xu
- Food Microbiology Key Laboratory of Sichuan Province, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, College of Food and Bioengineering, Xihua University, Chengdu 610039, China
| | - Xiaocui Liu
- Food Microbiology Key Laboratory of Sichuan Province, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, College of Food and Bioengineering, Xihua University, Chengdu 610039, China
- Key Laboratory of Food Non Thermal Processing, Engineering Technology Research Center of Food Non Thermal Processing, Yibin Xihua University Research Institute, Yibin 644004, China
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Xing Y, Liao X, Wu H, Qiu J, Wan R, Wang X, Yi R, Xu Q, Liu X. Comparison of Different Varieties on Quality Characteristics and Microbial Activity of Fresh-Cut Pineapple during Storage. Foods 2022; 11:foods11182788. [PMID: 36140915 PMCID: PMC9497531 DOI: 10.3390/foods11182788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 11/23/2022] Open
Abstract
This study compared the quality and storage characteristics of four pineapple varieties to select those displaying adequate storage resistance and those suitable for freshly cut processing. Four varieties of pineapple, namely Tainong No.16, Tainong No.17, Tainong No.11, and Bali, were used to analyze the quality differences in freshly cut pineapple during storage by measuring the quality, physiological indicators, and total microbial count. The results indicated that the nutritional quality and storability of freshly cut pineapples differed significantly among the varieties. During refrigeration at 4 °C, Tainong No.11 and Bali displayed the shortest storage period of 4 d, while Tainong No.17 and Tainong No.16 presented storage periods of 5 d and 6 d, respectively. A sensory evaluation indicated that the Tainong No.16 variety was superior in terms of consumer preference, while the Bali slices were generally rated lower than the other cultivars. Additionally, the sensory properties, weight loss, firmness, and ascorbic acid (AA) content of Tainong No.16 changed the least during storage, with values of 60.75%, 6.48%, 75.15%, and 20.44%, respectively. Overall, the quality order of the four varieties of freshly cut pineapples during storage was: Tainong No.16 > Tainong No.17 > Tainong No.11 > Bali. Moreover, two-way ANOVA showed that the main effect of variety and storage time on the storage quality of fresh-cut pineapple was significant (p < 0.05). The interaction effect of variety and storage time on other quality characteristics of fresh-cut pineapple was significant (p < 0.05) except for Titratable acid (TA) and AA. In conclusion, Tainong No.16 displayed higher storage potential than the other varieties. The results of this work provide application possibilities to promote the successful processing of pineapple cultivars as freshly cut produce.
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Affiliation(s)
- Yage Xing
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bioengineering, Xihua University, Chengdu 610039, China
- Key Laboratory of Food Non Thermal Processing, Engineering Technology Research Center of Food Non Thermal Processing, Yibin Xihua University Research Institute, Yibin 644004, China
- Correspondence:
| | - Xingmei Liao
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bioengineering, Xihua University, Chengdu 610039, China
- Key Laboratory of Food Non Thermal Processing, Engineering Technology Research Center of Food Non Thermal Processing, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Haijun Wu
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bioengineering, Xihua University, Chengdu 610039, China
- Key Laboratory of Food Non Thermal Processing, Engineering Technology Research Center of Food Non Thermal Processing, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Jiamin Qiu
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bioengineering, Xihua University, Chengdu 610039, China
- Key Laboratory of Food Non Thermal Processing, Engineering Technology Research Center of Food Non Thermal Processing, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Rufeng Wan
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bioengineering, Xihua University, Chengdu 610039, China
- Key Laboratory of Food Non Thermal Processing, Engineering Technology Research Center of Food Non Thermal Processing, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Xiaomin Wang
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bioengineering, Xihua University, Chengdu 610039, China
- Key Laboratory of Food Non Thermal Processing, Engineering Technology Research Center of Food Non Thermal Processing, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Rumeng Yi
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bioengineering, Xihua University, Chengdu 610039, China
- Key Laboratory of Food Non Thermal Processing, Engineering Technology Research Center of Food Non Thermal Processing, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Qinglian Xu
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bioengineering, Xihua University, Chengdu 610039, China
- Key Laboratory of Food Non Thermal Processing, Engineering Technology Research Center of Food Non Thermal Processing, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Xiaocui Liu
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bioengineering, Xihua University, Chengdu 610039, China
- Key Laboratory of Food Non Thermal Processing, Engineering Technology Research Center of Food Non Thermal Processing, Yibin Xihua University Research Institute, Yibin 644004, China
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Han Z, Kraiyot S, Kittikun AH, Zhou W, Li J. Fractionation and activity profiling of fruit bromelain from pineapples of Phuket variety growing in Thailand. J Food Biochem 2019; 43:e13011. [PMID: 31393018 DOI: 10.1111/jfbc.13011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 07/16/2019] [Accepted: 07/22/2019] [Indexed: 11/27/2022]
Abstract
Bromelain is a type of protease found in both fruits and stems of pineapples. Stem bromelain has been extensively studied and is commercially available for applications in various industries. In contrast, studies of fruit bromelain are quite limited since most of pineapples have been consumed freshly, canned or juiced. Nowadays, the consumption of canned fruits, including canned pineapples has decreased greatly. Fruit bromelain could be a new growth point for pineapple industry. In this study, fruit bromelain was extracted from the pineapple juice of Phuket variety and some of its properties were studied. The enzyme was purified by precipitation using ammonium sulfate fractionation followed by ion-exchange and gel filtration chromatography. Consequently, the protease purification level was increased by 95.2 fold. The final specific activity was getting to 448,590 U/mg on average, dominated by cysteine proteases, with optimal activity at 45°C and pH ranging from 6 to 8. The study facilitates the molecular and application research of fruit bromelain. PRACTICAL APPLICATIONS: The research has been carried out at Funong Food Technology Co., Ltd., Guangdong, China, which produces primarily pineapple chunks and juice. As plenty of by-products, like peels and cores of pineapples, are produced, the techniques are employed to extract bromelain from the by-products. The techniques reported in this work are not new or advanced, however, they are applicable during the manufacturing process and the related equipment is easy to set up and operate. What's more, the practical application of the techniques is cost-effective for the manufactories. Take Funong Food Technology Co., Ltd. as an example, they was using 80% saturation ammonium sulfate to precipitate protein from pineapple juice and obtained a bromelain with activity of approximately 8,000 U/mg and yield of 1.7 kg per ton of juice. With the application of the techniques reported in this work, bromelain was first extracted by ammonium sulfate gradient precipitation, and then purified through ion-exchange and gel filtration chromatography. Each step of precipitation and purification generates a different level of activity and recovery of bromelain, ranging from around 2,506 to 448,590 U/mg, which allows for the production of bromelain according to the requirement of the market and brings more profits.
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Affiliation(s)
- Zhiping Han
- College of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang, China
| | - Saelim Kraiyot
- Department of Industrial Biotechnology, Prince of Songkla University, Hat Yai, Thailand
| | - Aran H Kittikun
- Department of Industrial Biotechnology, Prince of Songkla University, Hat Yai, Thailand
| | - Wei Zhou
- Chinese Academy of Tropical Agricultural Sciences, Agricultural Product Processing Research Institute, Zhanjiang, China
| | - Jihua Li
- Chinese Academy of Tropical Agricultural Sciences, Agricultural Product Processing Research Institute, Zhanjiang, China
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