To clarify the regulatory effect of the new drying process on pesticide residues in Lycium ruthenicum Murr. and to optimize the safe production technology of L. ruthenicum Murr., in this study, taking L. ruthenicum Murr. as the research object, six typical pesticides including acetamiprid, carbendazim, imidacloprid, pyridaben, fenpyroximate, and etoxazole were selected as the target substances. The ultra-high performance liquid chromatography- tandem mass spectrometry(UPLC-MS/MS) system was used to calculate the processing factor(PF) and degradation rate(DR) and detect the dynamic changes of pesticide residues during the entire process of heat pump drying and cold ion drying. The results showed that when pesticide residue content was calculated on a dry matter basis, the pesticide residues in the drying process of L. ruthenicum Murr. showed a phased variation characteristic of "removal by washing-concentration by blowing-degradation by drying". The washing step could effectively reduce most pesticide residues, and the flowing water cleaning matched with the cold ion process achieved a degradation rate of over 76% for both acetamiprid and imidacloprid. In the air-drying stage, water evaporation drived the enrichment of all pesticide residues, with processing factors all greater than 1. Under the cold ion process, the processing factor of pyridaben in the air-drying stage reached 9.60, showing a more significant enrichment effect. In the final drying stage, the degradation rates of the 6 pesticides in both processes exceeded 68%.Comparing the two processes, the average overall processing factor of the cold ion drying was only 0.25, which was much lower than 0.32 of the heat pump process. Among them, the cold ion pretreatment could specifically degrade pyridaben with a degradation rate of 99.04%, and only had a slight enrichment effect on a few highly stable pesticides such as etoxazole. In contrast, the heat pump drying process had no targeted residue reduction advantage, the total degradation rate of the thermally stable etoxazole was only 43.9%, and its overall processing factor was higher.
XUY R, ZANGZ P, ZHANGQ,et al. Characteristics and quality analysis of radio frequency-hot air combined segmented drying of wolfberry(Lycium barbarum)[J]. Foods,2022,11(11):1645.
[4]
JIANY L, WANGN L, HANZ M,et al. Effects of different drying methods on the quality of Lycium barbarum:focus on the carotenoids and polysaccharides[J]. Food Chemistry:X,2025,31:103021.
[5]
YUJ, YANY M, ZHANGL T,et al. A comprehensive review of goji berry processing and utilization[J]. Food Science & Nutrition,2023,11(12):7445-7457.
[6]
TANGX M, ZHANGY Q, LIF Y,et al. Effects of traditional and advanced drying techniques on the physicochemical properties of Lycium barbarum L.polysaccharides and the formation of Maillard reaction products in its dried berries[J]. Food Chemistry,2023,409:135268.
[7]
任贵平. 热风微波联合干燥枸杞工艺研究及产品开发[D]. 乌鲁木齐:新疆农业大学,2022.
[8]
RENG P. Combined drying of wolfberry with hot air and microwave and development of new products[D]. Urumqi:Xinjiang Agricultural University,2022.
PANJ, HANC Y, WANGJ. Comparison of fruit quality of Lycium barbarum L. 'ningqi No.7' in different harvest periods[J]. Contemporary Horticulture,2025,48(24):54-57.
[11]
肖欧丽. 枸杞种植及炮制加工过程中农药残留行为研究[D]. 北京:中国农业科学院,2022.
[12]
XIAOO L. Study on the behavior of pesticide residues during the cultivation and processing of Lyciumbarbarum [D]. Beijing:Chinese Academy of Agricultural Sciences,2022.
[13]
PANW, CHENZ L, WANGX,et al. Occurrence,dissipation and processing factors of multi-pesticides in goji berry[J]. Journal of Hazardous Materials,2024,473:134696.
WANGJ, XIEY S, LIUZ Y,et al. Analysis of pesticide residues in wolfberry and their dietary exposure risk assessments in Hexi Corridor[J]. Farm Products Processing,2020(21):63-68.
SHIG Y, HUANGW Y, DUANT T,et al. Effects of primary processing to six pesticide residues in Codonopsis pilosula and Bletilla striata [J]. Storage and Process,2025,25(3):108-116.
WANGY, JINH Y, SUIH X,et al. Analysis of pesticide residues in wolfberry and dietary exposure risk assessment[J]. Chinese Pharmaceutical Journal,2018,53(3):182-186.
WEIJ Y, ZHANGL T, DINGB W,et al. Comprehensive quality evaluation of Lycium barbarum L. vegetable at different harvest periods using principal component analysis andcluster analysis[J/OL]. Science and Technology of Food Industry, 2025: 1-17[2026-01-14].
ZHAOD D, CHEND, PENGY,et al. Drying kinetics models and qualities analysis of Lycium during hot air drying[J]. Journal of Chinese Institute of Food Science and Technology,2018,18(3):114-124.
General Administration of Quality Supervision,Inspection and Quarantine of the People's Republic of China,Standardization Administration of the People's Republic of China. Determination of 450 pesticides and related chemicals residues in fruits and vegetables-LC-MS-MS method:GB/T 20769-2008 [S]. Beijing:Standards Press of China,2009.
[28]
TAHERGORABIM, HASHEMIM, TAYEBIYANA,et al. Dietary health risk assessment of pesticide residues in pistachios based on probabilistic modeling techniques[J]. Integrated Environmental Assessment and Management,2026,22(4):1265-1278.
ZHANGX Z, WEIL B, JIAOZ P,et al. Simultaneous determination of 40 pesticide residues in soybeans by dispersive solid-phase extraction combined with UPLC-MS/MS[J]. Agrochemicals,2026,65(2):99-107.
LIUW, LIUX, CHENM,et al. Pesticide residue levels and dietary intake risk assessment in grapes from major production areas in Sichuan province[J]. Quality and Safety of Agro-Products,2026(1):63-70.
LÜY D, ZHAOJ F, DINGY F. Study on the pesticide residues removal from cherry tomatoes by slightly acidic electrolyzed water combined with ultrasound[J]. Storage and Process,2025,25(10):131-136.
SHIG Y, HUANGW Y, DUANT T,et al. Residue changes of 4 kinds of fungicides in the preliminary processing of Bletilla Striata [J]. Acta Agriculturae Zhejiangensis,2024,36(7):1677-1685.
[37]
FENGX X, PANL X, WANGC,et al. Residue analysis and risk assessment of pyrethrins in open field and greenhouse turnips[J]. Environmental Science and Pollution Research,2018,25(1):877-886.
WANGY X, DUANJ M, GAOQ C,et al. Meta-analysis of food processing on pesticide residues in rice[J]. Chinese Journal of Pesticide Science,2022,24(3):621-629.
[40]
ESLAMIZ, MAHDAVIV, TAJDAR-ORANJB. Probabilistic health risk assessment based on Monte Carlo simulation for pesticide residues in date fruits of Iran[J]. Environmental Science and Pollution Research,2021,28(31):42037-42050.
WANGF, HUANGW Y, ZHANGY,et al. Effects of initial processing on residues of 5 kinds of pesticide in Codonopsis pilosul [J]. Journal of Food Safety & Quality,2023,14(22):226-232.
[43]
KANARIOM, MATOFARIJ W, NDUKOJ M. Influence of on-farm pesticide practices and processing methods on pesticide residue levels in potato tubers(Solanum tuberosum L.) in Nyandarua county,Kenya[J]. Journal of Food Protection,2025,88(7):100521.
YOUJ, GUOH B, ZENGS D,et al. Effect of processing methods on preservatives pesticide residues in dried mango[J]. Chinese Journal of Tropical Crops,2016,37(12):2420-2426.
HUANGH Y, LUF, ZHONGJ F,et al. Removal effect of pesticide residues in pears by different washing methods[J]. Journal of Anhui Agricultural University,2024,51(4):706-712.
ZHANGY, WUY, NIUY,et al. Effects of drying methods on pesticide residues in wolfberry and its dietary exposure assessment[J]. Food Research and Development,2016,37(13):176-180.
[54]
TIANY, WUJ X, ZHENGY P,et al. Enhanced removal of phoxim pesticide residues from grapes using microbubble plasma-activated water[J]. Agriculture Communications,2026,4(1):100128.