PMID- 35719140 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220716 IS - 2296-861X (Print) IS - 2296-861X (Electronic) IS - 2296-861X (Linking) VI - 9 DP - 2022 TI - Optimized Extraction of cAMP From Jujube by Ultra-High Pressure Technology and the Anti-allergic Effect for Peanut Allergy Mouse. PG - 862900 LID - 10.3389/fnut.2022.862900 [doi] LID - 862900 AB - Jujube contains abundant cyclic adenosine monophosphate (cAMP). In contrast, the extraction technology of cAMP from jujube is still to be explored. In this study, the ultra-high pressure extraction (UHPE) conditions for obtaining the maximum cAMP yield from jujube were optimized. Orthogonal array design (OAD) was applied to evaluate the effects of three variables (pressure, pressure-holding time, and liquid-to-solid ratio) by UHPE on cAMP yield. The results showed that the optimal cAMP yield (1223.2 mug/g) was derived at 300 MPa, 20 min duration, and a liquid-to-solid ratio of 2.5 ml/g. In addition, as an important functional ingredient in jujube, cAMP has potential anti-allergic effect. To develop the functional characteristics of jujube, the effect of cAMP was characterized in vivo with the Balb/c mouse model of peanut allergy, which was established by subcutaneous injection of crude peanut protein extract (PN). The results showed that treatment with cAMP in PN-sensitized mice suppressed the lesions in jejunal tissues and allergic symptoms and restored spleen index. Meanwhile, cAMP treatment reduced serum levels of specific immunoglobulin E (IgE), histamine, as well as interleukin-4 (IL-4) and stimulated the secretion of tumor necrosis factor-alpha (TNF-alpha), whereas the serum levels of interleukin-10 (IL-10) were not affected. Our results suggested that cAMP has an anti-allergic effect in PN-sensitized mice. CI - Copyright (c) 2022 Sang, Bai, Feng, Wu, Liu, Gao and Long. FAU - Sang, Chaowei AU - Sang C AD - College of Food Science and Enginering, Northwest A&F University, Xianyang, China. FAU - Bai, Qiao AU - Bai Q AD - College of Food Science and Enginering, Northwest A&F University, Xianyang, China. FAU - Feng, Xiaoping AU - Feng X AD - College of Food Science and Enginering, Northwest A&F University, Xianyang, China. FAU - Wu, Chunyu AU - Wu C AD - College of Food Science and Enginering, Northwest A&F University, Xianyang, China. FAU - Liu, Ye AU - Liu Y AD - Beijing Key Lab of Plant Resource Research and Development, Beijing Technology and Business University, Beijing, China. FAU - Gao, Zhenpeng AU - Gao Z AD - College of Food Science and Enginering, Northwest A&F University, Xianyang, China. FAU - Long, Fangyu AU - Long F AD - College of Food Science and Enginering, Northwest A&F University, Xianyang, China. LA - eng PT - Journal Article DEP - 20220526 PL - Switzerland TA - Front Nutr JT - Frontiers in nutrition JID - 101642264 PMC - PMC9199853 OTO - NOTNLM OT - Balb/c mouse model OT - cyclic adenosine monophosphate OT - jujube OT - peanut allergy OT - ultra-high pressure extraction COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The reviewer LS declared a shared affiliation with the authors to the handling editor at time of review. EDAT- 2022/06/21 06:00 MHDA- 2022/06/21 06:01 PMCR- 2022/01/01 CRDT- 2022/06/20 03:25 PHST- 2022/01/26 00:00 [received] PHST- 2022/03/30 00:00 [accepted] PHST- 2022/06/20 03:25 [entrez] PHST- 2022/06/21 06:00 [pubmed] PHST- 2022/06/21 06:01 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - 10.3389/fnut.2022.862900 [doi] PST - epublish SO - Front Nutr. 2022 May 26;9:862900. doi: 10.3389/fnut.2022.862900. eCollection 2022.