<i>Camellia sinensis</i> extract delays microbiological and oxidative changes in striped catfish fillets during frozen storage

Tran, Minh Phu; Huynh, Thi Kim Duyen; Nguyen, Le Anh Dao; Nguyen, Quoc Thinh; Nguyen, Thi Nhu Ha; Phong Ho, Quoc; Douny, Caroline

doi:10.1590/0103-8478cr20210755

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FOOD TECHNOLOGY • Cienc. Rural 53 (4) • 2023 • https://doi.org/10.1590/0103-8478cr20210755 copy

Camellia sinensis extract delays microbiological and oxidative changes in striped catfish fillets during frozen storage

Extrato de chá verde age sobre a qualidade de filés de pescado durante o armazenamento por congelamento

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT:

This study investigated the effects of tea leaf (Camellia sinensis) extract on the quality of striped catfish (Pangasianodon hypophthalmus) fillets during 18-months of frozen storage (-20 ± 2 °C). Fillet samples were submitted to the treatments Control (cold tap water), CS 7.63 (C. sinensis extract solution 7.63 µg / mL) and CS 625 (C. sinensis extract 625 µg / mL) and stored for 18 months, with collections performed at 0, 1, 3, 6, 9, 12 and 18 months. Total viable count, physicochemical parameters (water holding capacity, total volatile basic nitrogen, peroxide value, thiobarbituric acid reactive substances, moisture and pH), sensory properties and color measurement were evaluated. Results showed that fillets treated with C.a sinensis extracts slightly reduced lipid oxidation, inhibited bacterial growth and improved sensory properties compared to untreated samples, without causing significant changes in the other quality indicators. The findings indicated that the green tea leaf extract immersion treatments, contributed to the improved quality preservation of striped catfish fillets during frozen storage.

Key words:
Camellia sinensis; extract; frozen storage; striped catfish

Universidade Federal de Santa Maria Universidade Federal de Santa Maria, Centro de Ciências Rurais , 97105-900 Santa Maria RS Brazil , Tel.: +55 55 3220-8698 , Fax: +55 55 3220-8695 - Santa Maria - RS - Brazil
E-mail: cienciarural@mail.ufsm.br

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[1] E-mail: tmphu@ctu.edu.vn. ^*Corresponding author

Storage time (months)	-----------------------------pH value------------------------------			---Total volatile basic nitrogen (TVB-N; mg N/100 g)---
	Control	C. sinensis 7.63 µg/mL	C. sinensis 625 µg/mL	Control	C. sinensis 7.63 µg/mL	C. sinensis 625 µg/mL
0	6.74 ± 0.10^a	6.71 ± 0.06^a	6.69 ± 0.03^a	12.2 ± 0.58^a	12.5 ± 0.64^a	12.7 ± 1.06^a
1	6.81 ± 0.04^a	6.74 ± 0.05^a	6.79 ± 0.03^a	12.8 ± 0.90^a	12.7 ± 0.16^a	13.0 ± 0.90^a
3	6.84 ± 0.15^a	6.77 ± 0.07^a	6.88 ± 0.09^a	12.9 ± 0.56^a	12.6 ± 0.56^a	12.7 ± 0.65^a
6	6.82 ± 0.18^a	6.73 ± 0.14^a	6.66 ± 0.20^a	13.4 ± 0.86^a	13.2 ± 0.28^a	13.1 ± 0.98^a
9	6.85 ± 0.31^a	6.78 ± 0.02^a	6.87 ± 0.06^a	14.2 ± 1.19^a	15.1 ± 0.98^a	13.7 ± 1.26^a
12	6.98 ± 0.01^a	6.86 ± 0.12^a	6.81 ± 0.12^a	15.6 ± 1.12^a	15.7 ± 0.40^a	16.1 ± 1.00^a
18	6.80 ± 0.19^a	6.73 ± 0.07^a	6.73 ± 0.06^a	12.9 ± 0.46^a	12.4 ± 1.11^a	12.2 ± 1.43^a

Storage time (months)	--------------Water holding capacity (WHC; %)-------------			---------------------------Moisture (%)-----------------------------
	Control	C. sinensis 7.63 µg/mL	C. sinensis 625 µg/mL	Control	C. sinensis 7.63 µg/mL	C. sinensis 625 µg/mL
0	90.8 ± 0.60^a	92.1 ± 1.43^a	90.8 ± 1.47^a	80.8 ± 1.22^a	79.8 ± 0.27^a	80.0 ± 0.08^a
1	94.0 ± 1.31^a	94.0 ± 0.04^a	95.6 ± 1.40^a	80.9 ± 0.49^a	80.4 ± 0.56^a	80.6 ± 1.15^a
3	95.0 ± 0.87^a	93.1 ± 0.68^a	93.6 ± 1.86^a	80.4 ± 0.93^a	81.1 ± 0.15^a	81.0 ± 0.91^a
6	90.4 ± 0.01^a	89.4 ± 1.75^a	90.7 ± 1.21^a	80.7 ± 2.30^a	80.2 ± 0.48^a	80.0 ± 1.08^a
9	91.1 ± 0.16^b	89.9 ± 0.35^a	90.8 ± 0.40^b	80.9 ± 0.20^a	79.6 ± 0.04^a	80.7 ± 1.52^a
12	94.3 ± 0.42^a	93.0 ± 4.38^a	93.8 ± 1.20^a	80.0 ± 0.84^a	79.4 ± 0.77^a	80.5 ± 1.05^a
18	90.4 ± 2.30^a	92.2 ± 4.48^a	92.9 ± 1.99^a	79.0 ± 1.29^a	80.4 ± 0.87^a	79.4 ± 0.47^a

Storage time (months)	-----------------Peroxide value (PV; meq/kg)----------------			Thiobarbituric acid reactive substances (TBARs; mg MDA/kg)
	Control	C. sinensis 7.63 µg/mL	C. sinensis 625 µg/mL	Control	C. sinensis 7.63 µg/mL	C. sinensis 625 µg/mL
0	4.53 ± 0.74^b	3.79 ± 0.65^a	3.69 ± 0.24^a	0.160 ± 0.03^a	0.171 ± 0.01^a	0.151 ± 0.01^a
1	5.34 ± 0.93^b	4.63 ± 0.80^ab	4.29 ± 0.27^a	0.250 ± 0.01^c	0.163 ± 0.003^b	0.139 ± 0.01^a
3	5.43 ± 0.58^b	4.91 ± 0.76^ab	4.30 ± 1.02^a	0.286 ± 0.03^b	0.226 ± 0.02^a	0.207 ± 0.01^a
6	4.53 ± 0.79^a	3.76 ± 0.91^a	4.05 ± 0.60^a	0.348 ± 0.03^b	0.294 ± 0.02^b	0.234 ± 0.04^a
9	4.16 ± 1.18^a	3.69 ± 1.14^a	3.63 ± 0.80^a	0.173 ± 0.01^a	0.201 ± 0.09^a	0.176 ± 0.02^a
12	3.39 ± 0.90^a	3.16 ± 0.88^a	3.08 ± 0.63^a	0.523 ± 0.06^b	0.485 ± 0.08^b	0.366 ± 0.06^a
18	3.28 ± 0.26^b	2.89 ± 0.57^ab	2.57 ± 0.27^a	0.383 ± 0.13^b	0.168 ± 0.06^a	0.099 ± 0.03^a

Storage time (months)	Treatments	L^*	a^*	b^*
0	Control	64.8 ± 0.42^a	-1.09 ± 0.28^a	8.55 ± 0.22^a
	C. sinensis 7.63 µg/mL	64.5 ± 0.66^a	-0.66 ± 0.39^a	9.11 ± 0.03^ab
	C. sinensis 625 µg/mL	64.2 ± 0.73^a	-1.33 ± 0.48^a	9.54 ± 0.70^b
1	Control	64.5 ± 0.66^a	-1.12 ± 0.08^b	8.77 ± 0.12^a
	C. sinensis 7.63 µg/mL	64.3 ± 0.95^a	-0.82 ± 0.18^c	10.55 ± 0.37^b
	C. sinensis 625 µg/mL	64.5 ± 0.12^a	-1.44 ± 0.10^a	9.91 ± 0.53^b
3	Control	63.6 ± 0.38^a	-1.67 ± 0.13^a	9.41 ± 0.99^a
	C. sinensis 7.63 µg/mL	64.0 ± 0.70^a	-1.35 ± 0.08^a	9.81 ± 1.05^a
	C. sinensis 625 µg/mL	63.7 ± 0.56^a	-1.72 ± 0.29^a	8.72 ± 0.09^a
6	Control	62.7 ± 0.11^a	-1.83 ± 0.19^a	8.52 ± 0.74^a
	C. sinensis 7.63 µg/mL	62.5 ± 0.41^a	-1.60 ± 0.08^a	9.88 ± 0.64^b
	C. sinensis 625 µg/mL	62.7 ± 0.24^a	-1.76 ± 0.08^a	9.72 ± 0.45^ab
9	Control	56.7 ± 1.74^a	-1.65 ± 0.31^a	8.71 ± 0.50^a
	C. sinensis 7.63 µg/mL	55.9 ± 1.46^a	-1.65 ± 0.37^a	8.72 ± 0.60^a
	C. sinensis 625 µg/mL	54.6 ± 1.68^a	-1.72 ± 0.15^a	8.80 ± 0.67^a
12	Control	55.5 ± 1.64^a	-1.91 ± 0.32^a	8.77 ± 0.84^a
	C. sinensis 7.63 µg/mL	54.1 ± 1.88^a	-2.03 ± 0.13^a	8.90 ± 1.18^a
	C. sinensis 625 µg/mL	54.6 ± 0.97^a	-1.77 ± 0.18^a	8.99 ± 0.75^a
18	Control	45.5 ± 0.69^a	1.25 ± 0.05^a	2.23 ± 0.60^a
	C. sinensis 7.63 µg/mL	46.3 ± 1.00^a	1.53 ± 0.17^a	2.52 ± 0.43^a
	C. sinensis 625 µg/mL	44.9 ± 1.61^a	1.33 ± 0.61^a	3.11 ± 0.50^a